Samson Concert 77 UM1 User manual

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FEATURING THE
UM1
RECEIVER
UM1 MICRO DIVERSITY SYSTEM
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Introduction / System Features
Congratulations on purchasing the Samson UM1 micro diversity receiver—part of our renowned
UHF Series One Wireless System! Although this product is designed for easy operation, we sug-
gest you first take some time to go through these pages so you can fully understand how we’ve
implemented a number of unique features.
Every wireless system consists of at least two components—a transmitter and a receiver, both of
which must be tuned to the same channel (that is, the same radio frequency) in order to operate
correctly.* The Samson UM1 system you have purchased operates in the 801 - 805 MHz frequency
range and contains a UM1 micro diversity receiver and one of three Concert 77 transmitters: a
CT7(L) belt-pack transmitter (for lavalier microphone or headset applications); a CT7(G) belt-pack
transmitter (for instrument applications); or a HT7 hand-held microphone transmitter (available in
a wide variety of popular capsules).
The UM1 system is specially designed to enable the production of professional audio tracks to
accompany your video shoot or live broadcast. The use of a handheld mic transmitter or lavalier
microphone connected to a beltpack transmitter effectively isolates the performer from unwant-
ed ambient sounds such as video camera motor noise or room sounds made by the camera
operator or video crew. Because the UM1 receiver is extremely small and lightweight, it can be
attached easily to any video camera using the supplied strip of velcro, and can even be powered
directly by the camera’s own 12-volt power supply, if available.
In this manual, you’ll find a more detailed description of the features of the UM1 system, as well as
a guided tour through all components, step-by-step instructions for setting up your system, wir-
ing diagrams and tables, and full specifications. If your UM1 system was purchased in the United
States, you’ll also find a warranty card enclosed—don’t forget to fill it out and mail it! This will
enable you to receive online technical support and will allow us to send you updated information
about this and other Samson products in the future. If your UM1 system was purchased outside of
the U. S., contact your local distributor for warranty details.
SPECIAL NOTE for U.S. purchasers: Should your UM1 system ever require servicing, a Return
Authorization number (RA) is necessary. Without this number, the unit will not be accepted. If
your UM1 system was purchased in the United States, please call Samson at 1-800-372-6766 for a
Return Authorization number prior to shipping your unit. If possible, return the unit in its original
carton and packing materials. If your UM1 system was purchased outside of the U. S., contact your
local distributor for servicing information.
* Your receiver and transmitter have been factory preset to utilize the same channel. A listing of the six
available channels and their corresponding UHF frequencies can be found on page 4 of this manual.
System Features
Designed for use in both live sound and sound contracting applications, the Samson UM1 system
provides a high performance, cost effective solution, utilizing state-of-the-art technology in wire-
less communications. Main features include:
• Six different available channels, all operating in the less crowded UHF bandwidth, and all
designed for simultaneous use. This means that you can use multiple UM1 systems (each tuned
to a different channel) in the same location without interference.
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System Features
• Optimized for use in videography applications, the UM1 system is highly customizable, com-
bining a UHF “walkaround” receiver with your choice of Samson Concert 77 beltpack or hand-
held microphone transmitters.
• Using the supplied velcro strip, the compact, lightweight UM1 receiver can be easily attached
to any video camera and can even derive 12 volt power from the camera (if available), making it
easy to integrate into any traveling or fixed installation video system.
• The UM1 micro diversity receiver includes a pair of tuned antennas and provides both balanced
and unbalanced outputs (with a three-position output level switch) and a headphone monitor
output with continuously adjustable level control. The receiver also includes an audio peak
LED, dual receiver indicators, and an RF strength meter.
• All components use standard 9-volt batteries, with battery life of more than 12 hours,* and
feature a convenient three-segment multicolor Battery Strength LED meter (which in the UM1
can also be used as an RF level meter), allowing you to monitor the remaining power in the
installed battery.
• True Diversity technology maximizes active range (up to 300 feet) and reduces potential inter-
ference problems through automatic switching between two independent receivers.
• Built-in companding noise reduction in all components for crystal-clear sound with minimized
background noise and hiss.
• Transmitters provide “popless” muting, which turns off the audio signal while leaving the carrier
signal on.
• Incredibly compact CT7 belt-pack transmitters are extremely lightweight (less than 4 ounces
with a 9-volt battery installed). The CT7 provides a Switchcraft TB3M mini-XLR jack for connec-
tion to a variety of popular headsets and lavalier microphones, including:
Samson QE headset**
Samson QV headset
Samson HS5P3 headset
Samson HM40P Wind Instrument Mic
Samson LM5P3 lavalier
Samson QL1 lavalier
Audio-Technica ATM-75 headset
Audio-Technica MT-350 lavalier
Applied Microphone Technology Roaming One wind instrument microphone
Audio-Technica AT-831 lavalier
Countryman IsoMax headset
Sony ECM-40 lavalier
Sony ECM-44 lavalier
• The HT7 hand-held microphone transmitter is available with either the Samson Q7
Neodymium dynamic microphone capsule, or the Samson C05 Condenser microphone cap-
sule.
* Typical usage. Actual battery life in the UM1 may vary depending upon headphone and metering
usage and headphone output level.
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1: A/B Receiver LEDs - When signal is being
received, one of these will be lit orange, showing
you whether the (left) “A” or (right) “B” receiver
is currently being used. The UM1 constantly
scans its two antennas and automatically selects
whichever is receiving the strongest, clearest
signal. This True Diversity switching is complete-
ly inaudible, but it effectively increases overall
range while virtually eliminating potential inter-
ference and phase cancellation problems.
2: Meter - This set of three multicolor LEDs acts
as a meter, indicating either battery power or
the strength of the incoming RF signal. This
meter can also be disabled altogether to con-
serve battery power. See #15 on the next page
for more information.
3: Peak LED - This LED lights red when output
signal from the UM1 is at the onset of clipping
(that is, when it is on the verge of being dis-
torted). If you see this light during operation,
move the microphone further away or lower the
output level of your instrument or transmitter.
For more information, see the section entitled
“Setting Up and Using the UM1 System” on page
9 in this manual.
4: Power switch - Use this to turn the UM1
power on and off.
5: SQ (Squelch) Level control - This control
determines the maximum range of the UM1
before audio signal dropout. Although it can be
adjusted using the supplied plastic screwdriver,
it should normally be left at its factory setting.
See the “Setting Up and Using the UM1 System”
section on page 9 in this manual for more infor-
mation.
6: Battery holder - Insert a standard 9-volt alka-
line battery here, being sure to observe the plus and minus polarity markings shown. We recom-
mend the Duracell MN 1604 type battery. Although rechargeable Ni-Cad batteries can be used,
they do not supply adequate current for more than four hours. WARNING: Do not insert the bat-
tery backwards; doing so can cause severe damage to the UM1 and will void your warranty.
7: Plastic screwdriver - Specially designed for use in adjusting the UM1 Squelch Level control
(see #4 above). See the “Setting Up and Using the UM1 System” section on page 9 in this manual
for more information.
8: Antennas (A and B) - The antenna mountings allow full rotation for optimum placement. In
normal operation, both antennas should be placed in a vertical position. Both antennas can be
folded inward for convenience when transporting the UM1. See the “Setting Up and Using the
UM1” section on page 9 in this manual for more information.
Guided Tour - UM1
SAMSON
SAMSON
MAX
MIN
POWER ON
SQ LEVEL
UHF MICRO DIVERSITY RECEIVER B
A
LOW MID HIGH PEAK 800 MHz
2
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+
-
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9: DC input - This jack will accept a DC input volt-
age of 6 - 13 volts (inner connection [tip] positive,
outer connection [sleeve] ground) from your video
camera, if available. Connect the optional Samson
AC300R adapter here to charge a rechargeable 9-
volt Ni-Cad battery.
10: Unbalanced output* - Use this unbalanced
(1K Ohm max.) 1/8" (3.5 mm) mini-phone jack
when connecting the UM1 to consumer (-10) audio equipment. Wiring is as follows: tip hot, sleeve
ground. If your video camera has stereo audio inputs, you’ll need to use a Y-adapter that has a 1/8"
(3.5 mm) mini-phone plug at one end and dual male RCA-type plugs at the other end.
11: Audio Output Level switch - Sets the audio output level of both the balanced and unbalanced
outputs (see #10 above and #14 below) to -30 dBm (mic level), -20 dBm, or -10 dBm (line level). See
the “Setting Up and Using the UM1 System” section on page 9 in this manual for more information.
12: Level control - This knob sets the level of the audio signal being sent to the headphones out-
put (see #13 below).
13: Headphones output - Connect a stereo
headphone to this standard 1/8" (3.5 mm) mini-
phone jack in order to monitor the signal being
output by the UM1. We recommend the use of
30 ohm headphones. The level of the headphone
signal can be set by adjusting the Level control
(see #12 above). Maximum output is 240 mW @ 30 ohms).
14: Balanced output* - Use this electronically balanced low impedance (600 Ohm) mini-XLR jack
when connecting the UM1 to professional (+4) audio equipment. Pin wiring is as follows: Pin 1
ground, Pin 2 high (hot), and Pin 3 low (cold).
15: Meter switch - This three-position switch determines the function of the front-panel UM1
meter (see page #2 on previous page). In the left “RF” position, the meter indicates the strength
of the incoming RF signal. In the center “BATTERY” position, the meter indicates relative battery
power, showing whether the installed battery is at low (red), mid (yellow) or high (green) strength.
(Note: When the red “low” indicator lights, performance is degraded and the battery needs to be
replaced). In the right “OFF” position, the meter is disabled altogether, thus conserving battery
power.
* If required, both the unbalanced and balanced outputs can be used simultaneously.
UM1 Frequency Conversion Chart
Guided Tour - UM1
30 20 10
LEVELOUT UNBAL
DC INPUT
10
9
11
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METER
RF OFF
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1: Input connector - The input device is connected here. The CT7 is supplied with either a lava-
lier or headset microphone or 1/4" jack cable (connected via a mini-XLR jack).
2: Power / Battery LED - This LED flashes once when the CT7 is first turned on and lights steadily
red when there are less than 2 hours of battery power remaining, indicating that the battery
needs to be changed. In order to avoid compromising audio fidelity (or having the CT7 stop
working completely), you should always replace the battery with a fresh one immediately when-
ever this LED lights red.
3: Audio on-off switch - When set to the “on” position, audio signal is transmitted. When set
to the “off” position, the audio signal is muted. Because the carrier signal remains during mut-
ing, no “pop” or “thud” will be heard. Note that turning this off does not turn off the transmitter
power—it is simply a way to temporarily mute the transmission of audio signal. If you don’t plan
on using the transmitter for extended periods, turn off the transmitter power by using the power
on-off switch (see #8 on the next page).
4: Belt clip - Use this clip to fasten the CT7 to a belt.
5: Battery cover release - Push in both sides of the battery
cover and pull back to open the CT7 battery cover.
6: Antenna - This permanently attached transmitter
“stiff” antenna should be fully extended for normal opera-
tions. See the “Setting Up and Using the Concert Series
System” section on page 9 in this manual for more informa-
tion about antenna positioning.
Guided Tour - CT7
1
4
2
3
5
5
6
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Guided Tour - CT7
11
9
10
7
8
7: Attenuation switch - The CT7 transmitter features a signal Attenuation switch that is used
to select the input level of “0dB” or “-15dB”. This Attenuation switch has been factory preset to
“0dB” providing the optimum level for most microphone and instrument input signals. If you are
using a microphone or instrument with a high output signal, first try to adjust the Gain control as
described in the following section. If you cannot attenuate the signal low enough using the Gain
control, use the supplied plastic screwdriver (see #8 below) to turn the rotary Attenuation switch
to the counter-clockwise position setting the CT7 to “-15dB” level.
8: Audio Input Level control (trimpot) - This input sensitivity control has been factory preset to
provide optimum level for the particular lavalier, headset or for optimum instrument level, so we
recommend that this not be adjusted manually. If necessary, however, you can use the supplied
plastic screwdriver (see #10 below) to raise or lower the CT7 input level. See the “Setting Up and
Using the Concert Series System” section on page 9 in this manual for more information.
9: Battery holder - Insert a standard 9-volt alkaline battery here, being sure to observe the
plus and minus polarity markings shown. We recommend the Duracell MN 1604 type battery.
Although rechargeable Ni-Cad batteries can be used, they do not supply adequate current for
more than four hours. WARNING: Do not insert the battery backwards; doing so can cause
severe damage to the CT7 and will void your warranty.
10: Power on-off switch* - Use this to turn the CT7 on or off (to conserve battery power, be sure
to leave it off when not in use).
11: Plastic screwdriver - Specially designed for use in adjusting the CT7 Audio Input Level
control (see #8 above) and/or CR77 Squelch control (see #7 on page 3). See the “Setting Up and
Using the Concert Series System” section on page 9 in this manual for more information.
* Be sure to mute the audio signal at your external mixer or amplifier before turning transmitter power
on or off, or an audible pop may result.
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1: Audio on-off switch - When set to the “on” posi-
tion, audio signal is transmitted. When set to the “off”
position, the audio signal is muted. Because the car-
rier signal remains during muting, no “pop” or “thud”
will be heard. Note that turning this off does not turn
off the transmitter power—it is simply a way to tem-
porarily mute the transmission of audio signal. If you
don’t plan on using the transmitter for extended peri-
ods, turn off the transmitter power by using the power
on-off switch (see #3 below).
2: Battery level meter - This set of three multicolor
LEDs indicates relative battery power, indicating
whether the installed battery is at low (red), mid
(yellow) or high (green) strength. One of these will
light whenever the HT7 is powered on (see #3 below).
When the red “low” indicator lights, RF performance is
degraded and the battery needs to be replaced.
3: Power on-off switch* - Use this to turn the HT7 on
or off (to conserve battery power, be sure to leave it off
when not in use).
4: Microphone Input Level control (trimpot) - This
input sensitivity control has been factory preset to
provide optimum level for the particular microphone
capsule provided with your Concert 77 system and so
we recommend that this not be adjusted manually. If
necessary, however, you can use the supplied plastic screwdriver to raise or lower the input level.
See the “Setting Up and Using the Concert Series System” section on page 9 in this manual for
more information.
5: Battery holder - Insert a standard 9-volt alkaline battery here, being sure to observe the
plus and minus polarity markings shown. We recommend the Duracell MN 1604 type battery.
Although rechargeable Ni-Cad batteries can be used, they do not supply adequate current for
more than four hours. WARNING: Do not insert the battery backwards; doing so can cause
severe damage to the HT7 and will void your warranty.
* Be sure to mute the audio signal at your external mixer or amplifier before turning transmitter power
on or off, or an audible pop may result.
8
Guided Tour - HT7
MIN MAX
LEVEL
POWER
ON
OFF
5
3
4
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9
Setting Up and Using Your UM1 System
The basic procedure for setting up and using your UM1 Wireless System takes only a few minutes:
1. For the UM1 system to work correctly, both the receiver and transmitter must be set to the
same channel. Remove all packing materials (save them in case of need for future service) and
check to make sure that the supplied UM1 receiver and CT7 or HT7 transmitter are set to the same
channel. If these channels do not match, contact your distributor or, if purchased in the United
States, Samson Technical Support at 1-800-372-6766.
2a. If you are using a 9-volt battery to power the UM1, press gently down on the battery door
release (on the front of the UM1, on the word “Open”) and swing the door open in order to access
the battery compartment . Note that the door is hinged and is not intended to be removed
from the receiver case. Insert a 9-volt battery, being careful to observe the polarity markings.
Warning: Reversing the battery polarity may cause permanent damage to your receiver.
Turn the power switch “On” and set the Meter switch to “BATTERY.” The green “HIGH” meter LED
will light if the battery is sufficiently strong. Once you’ve verified battery strength, turn the power
switch “Off” again.
2b. If you are using the optional Samson AC300R adapter or your video camera’s 12-volt power
supply to power the UM1, connect it to the UM1 DC input jack. On the front of the UM1, press
gently down on the battery door release (on the word “Open”) and swing the door open note
that the door is hinged and is not intended to be removed from the receiver case). Make sure the
power switch is set to “Off.”
3a. If your system contains a CT7 belt-pack transmitter, push in both sides of the battery cover
and pull back to open the battery door, which is hinged and not intended to be removed from the
transmitter case. Please use care when opening this door as undue force will destroy the hinge.
3b. If your system contains a HT7 handheld transmitter, unscrew the bottom section of the micro-
phone by turning it counterclockwise and then slide it off.
4. Place a fresh 9-volt alkaline battery in the transmitter battery holder, taking care to observe the
polarity markings. If you are using a CT7 belt-pack transmitter, gently replace the battery door by
swinging it up and pressing until it clicks. If you are using a HT7 handheld transmitter, replace the
bottom section of the microphone by sliding it on and then screwing it back on. Whichever trans-
mitter you are using, leave it off for the moment.
5. Next, make the physical cable connection between the output of your UM1 receiver and the
audio input of your video camera or audio amplifier or mixer, being careful to set the Audio
Output Level switch so that the signal is strong but not distorting. Normally, it should be set to
the “-30” position when connecting to a mic-level input and to the “-20” or “-10” position when
connecting to a line-level input. If required, both the balanced and unbalanced outputs can be
used simultaneously. Leave your amplifier (and/or mixer) off at this time.
6. Turn the power to the UM1 “On” and close the battery door.
7. Extend both “A” and “B” antennas from the UM1 and place both in a vertical position.
8. Turn on the power to the CT7 or H7 transmitter; the green “HIGH” Battery strength LED will light
if the battery is sufficiently strong. At this point, either the “A” or “B” orange LED on the front of the
UM1 will light (depending upon which antenna is receiving the stronger signal).
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9. Set the UM1 Meter switch to “RF.” One or more segments in the UM1 meter should light. If
the “HIGH” segment lights, the UM1 is receiving an optimally strong RF signal and is placed and
positioned correctly. If the “LOW” segment lights (indicating a relatively weak RF signal), try relo-
cating the UM1 or changing the position of one or both of its antennas.
10. If you want to use headphones to monitor the transmission, connect a standard “Walkman”-
type 30 ohm headphone to the UM1 headphone output and adjust the Level control until the
desired level is reached.
11. Turn on your connected amplifier and/or mixer but keep its volume all the way down. Next,
make sure that your transmitter is unmuted by setting its Audio switch to “On.” If you are using
the CT7 transmitter or if you are using the CT7 transmitter with a connected lavalier microphone
or headset, speak or sing into the mic at a normal performance level while slowly raising the
volume of your amplifier/mixer until the desired level is reached. If you are using the CT7 trans-
mitter with a connected instrument, play the instrument at normal performance level while
slowly raising the volume of your amplifier/mixer until the desired level is reached. If you are
using a CT7 beltpack transmitter equipped with a lavalier microphone, note that correct lavalier
placement is critical to sound quality. We recommend that you place it as shown in the illustra-
tion on the right—as close to your mouth as possible but
off to one side (to minimize nasality) and unobstructed
by clothing. Bear in mind also that omni microphones
(mics which pick up signal from all directions) are more
prone to feedback problems than unidirectional (cardioid
or hypercardioid) ones; in general, you can avoid feedback
by taking care not to use any microphone directly in front
of a PA speaker (if this is unavoidable, try using an equal-
izer to attenuate those high- or mid-range frequencies
which are causing the feedback “squealing”).
12. If you hear distortion at the desired volume level, first
check to see whether the red “Peak” LED on the UM1 is lit.
If it is not, make sure that the gain structure of your audio
system is correctly set (consult the owners manual of your
mixer and/or amplifier for details). If the red “Peak” LED is
lit, do the following:
• If you are using a HT7 transmitter, use the supplied plastic screwdriver to turn its
Microphone Input Level control (trimpot) slowly counterclockwise (towards the “Min” posi-
tion) until the distortion disappears.
• If you are using a CT7 transmitter with connected lavalier microphone or headset, its Audio
Input Level control has been factory preset to provide optimum level for the particular
lavalier or headset model being used and so no adjustment should be necessary. Any dis-
tortion present should therefore simply be a matter of the microphone being too close to
the mouth; try moving it further away. If this does not solve the problem, use the supplied
plastic screwdriver to turn the Audio Input Level control (trimpot) on the CT7 slowly coun-
terclockwise until the distortion disappears.
• If you are using a CT7 transmitter with an instrument such as electric guitar or bass, lower
the output level of the instrument until the distortion disappears. Alternatively, you can
use the supplied plastic screwdriver to turn the Level control (trimpot) on the CT7 slowly
counterclockwise until the distortion disappears.
10
Setting Up and Using Your UM1 System
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11
11
Setting Up and Using Your UM1 System
13. Conversely, if you hear a weak, noisy signal at the desired volume level, again make sure that
the gain structure of your audio system is correctly set (consult the owners manual of your mixer
and/or amplifier for details). If it is and the signal coming from the UM1 is still weak and/or noisy,
do the following:
• If you are using a HT7 transmitter, use the supplied plastic screwdriver to turn the Level
control (trimpot) on the transmitter slowly clockwise (towards the “Max” position) until the
signal reaches an acceptable level.
• If you are using a CT7 transmitter with connected lavalier microphone or headset, its Level
control has been factory preset to provide optimum level for the particular lavalier or head-
set model being used and so no adjustment should be necessary. Any weakness of signal
should therefore simply be a matter of the microphone being too far from the mouth; try
moving it closer. If this does not solve the problem, use the supplied plastic screwdriver
to turn the Level control (trimpot) on the CT7 slowly clockwise until the signal reaches an
acceptable level.
• If you are using a CT7 transmitter with an instrument such as electric guitar or bass, raise the
output level of the instrument until a good signal is achieved. Alternatively, you can use the
supplied plastic screwdriver to turn the Level control (trimpot) on the CT7 slowly clockwise
until the signal reaches an acceptable level.
14. Temporarily turn down the level of your mixer/amplifier system and turn off the power to
your transmitter, leaving the UM1 on. Then restore the previously set level of your mixer/ampli-
fier. With the transmitter off, the receiver output should be totally silent—if it is, skip ahead
to the next step. If it isn’t (that is, if you hear some noise), you may need to adjust the UM1 SQ
(squelch) control, located in the battery compartment. When the SQ control is at its minimum
setting, the UM1 system always provides maximum range without dropout; however, depend-
ing upon the particular environment your system is used in, you may need to reduce that range
somewhat in order to eliminate band noise when the transmitter is turned off. To do so, use the
provided screwdriver to rotate the SQ control completely counterclockwise (to the “Min” posi-
tion), then slowly turn it clockwise until the noise disappears. If no noise is present at any posi-
tion, leave it at its fully counterclockwise “Min” position (so as to have the greatest overall range
available).
15. When first setting up the UM1 system in a new environment, it’s always a good idea to do a
walkaround in order to make sure that coverage is provided for your entire performance area.
Accordingly, turn on both the transmitter and UM1 receiver. If you are using a video camera, use
the supplied velcro strip to attach the UM1 to the side of the camera. If not, physically place the
UM1 in the position in which it will be used. Next, with the transmitter unmuted, walk through
the entire area that will need to be covered while speaking, singing, or playing your instrument.
As you do so, you will find that the orange “A” and “B” LEDs on the UM1 occasionally switch on or
off, always showing you which antenna is receiving the stronger signal. The basic rule of thumb
for all wireless audio systems is to always try to minimize the distance between transmitter and
receiver as much as possible and also to try to maintain “line of sight” between the two (that is,
the person using the transmitter should be able to see the receiver). Always try to minimize the
distance between transmitter and receiver as much as possible so that the strongest possible sig-
nal is received from all planned transmission points.
If you have followed all the steps above and are experiencing difficulties, contact your local dis-
tributor or, if purchased in the United States, call Samson Technical Support (1-800-372-6766)
between 9 AM and 5 PM EST.
UM177_ownman_4L_v1.indd 11 10/16/05 5:09:24 PM

System Features
42
Appendix A: CT7 Multipin Wiring Guide and Chart
SWITCHCRAFT TA3F
1234
41
MANUFACTURER MODEL PIN 1 PIN 2 PIN 3
AUDIO TECHNICA AT831 YELLOW x 2 RED x 2 JUMP TO PIN 2
SHIELD
AUDIO TECHNICA ATM75 YELLOW x 2 RED x 2 JUMP TO PIN 2
SHIELD
AUDIO TECHNICA ATPRO8HE YELLOW x 2 N/C RED x 2
SHIELD
AUDIO TECHNICA MT350 SHIELD WHITE JUMP TO PIN 2
SONY ECM44 SHIELD RED JUMP TO PIN 2
WHITE
SONY ECM40 SHIELD WHITE JUMP TO PIN 2
COUNTRYMAN ISOMAX SHIELD WHITE JUMP TO PIN 2
GUITAR SHIELD N/C AUDIO
PIN INFORMATION SWITCHCRAFT GROUND +Vdc AUDIO
TA3F
Procedure for wiring CT7L connector: Unscrew rubber boot 1 and pass wire
through 1 and 2. Solder wire to 3 after removing from 4 (use chart above).
Reinsert 3 to 4 with attached wire (3 is keyed to fit 4). Plug 2 into 3 again (2 is
keyed to 3) and crimp wire. Rescrew rubber boot 1 to 4.
UM177_ownman_4L_v1.indd 42 10/16/05 5:09:32 PM

Guided Tour - Front Panel
43
42
Specifications
System Specifications:
Channels 6
Frequency Type F3
Modulation Type FM
Noise Reduction Type Compander/Expander
Distance 300 feet
Transmitter (HT7, CT7):
Oscillation Type Direct PLL
Pre-emphasis 50 μsec
Antenna
HT7 Integral Antenna
CT7 1/4 Wave Length Wire (Pig Tail)
Input (CT7) TB3M Switchcraft Connector
Maximum Input Level 3 V p-p
Battery Duracell MN1604 9-volt alkaline
Operating Temperature -20° C / 55° C
Switches / Controls Power ON/OFF, Audio ON/OFF
HT7 Mic Level Volume
CT7 Audio Level
Display (LED) Battery Low/Mid/High (corresponds to <5.3 V / 5.3 - 7 V / >7V)
Operating Voltage 9 Volts +20% / -40%
Current Consumption 47 mA
RF Power 10 mW
Frequency Stability ±20 kHz
Spurious Ratio 2.5 nW
Deviation 20 kHz (16.5 kHz - 23.5 kHz)
T.H.D. (Overall) 0.5% (3% max) (@AF 1 kHz, RF 46 dBu)
AF Frequency Response 50 Hz - 15 kHz (±3 dB overall)
Battery life 12 hoursl
Receiver (UM1):
Oscillation Type Crystal Controlled
Receiving Method Single Super Heterodyne / True Diversity
De-emphasis 50 μsec
IF Frequency 10.7 MHz
Local Frequency 70 MHz Range (79 - 79.5 MHz)
Antenna 1/4 Wavelength Rod
In/Out 5.5 DC Inlet, Balanced Output (Switchcraft TA3F mini-XLR),
Unbalanced Output (3.5 mm phone jack), Headphone Output (3.5 mm phone jack)
Display (LED) Receiver A/B (Orange), Peak (Red), RF Level / Battery Strength (3 pc)
Peak LED lighting point AF output level approx. +4 dB
Controls Audio Level swtitch, Squelch volume,
Headphone volume, Meter function switch
Operating Temperature 0° C / 55° C
Operating Voltage AC adapter DC 6 - 13 Volts, 9 volts battery
Current Consumption >60 mA (no signal, all LEDs off)
Receiving Frequency Range 801 - 805 MHz
Squelch Sensitivity 17 dBμv ±4 dB
T.H.D. (Overall) 1% Max (@AF 1 kHz, RF 56 dBuv)
Dynamic Range 95 dB (w/IHF-A Filter)
AF Frequency Response 50 Hz - 15 kHz (±3 dB overall)
Audio Output Level 0 dBv ±2 dB (Maximum +9 dBV ±3 dB @ 3% THD)
Audio Output Impedance 1 k Ohms max. (Unbalanced), 600 Ohms (Balanced)
Headphone Output Impedance 32 Ohms
Battery life 12 hours typical
UM177_ownman_4L_v1.indd 43 10/16/05 5:09:32 PM

System Features
44
FCC Rules and Regulations
Samson wireless systems are type accepted under FCC
rules parts 90, 74 and 15.
Licensing of Samson equipment is the user’s responsibil-
ity and licensability depends on the user’s classification,
application and frequency selected.
This device complies with RSS-210 of
Industry & Science Canada.
Operation is subject to the following two conditions:
(1) this device may not cause harmful interference and (2)
this device must accept any interference received, includ-
ing interference that may cause
undesired operation.
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 
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UM177_ownman_4L_v1.indd 44 10/16/05 5:09:33 PM

SAMSON Samson echnologies CorpT .575 Underhill Blvd., Syosset, NY, 11791(516)364-2244(516)364-3888
Declaration of Conformity
Signed on behalf of the manufacturer:
Name:
Title:
Signed on behalf of the representative:
Name:
Title:
Address:
Address:
Date of issue:
Equipment:
Model #:
Class:
Manufacturer:
Address:
This is to certify that the aforementioned equipment fully conforms to the protection requirements
of the following EC Council Directives:
Directives Applicable Standards Title
SAMSON TECHNOLOGIES CORPORATION
575 Underhill Boulevard, Syosset, New York 11791 USA
89/336/EEC
73/23/EEC Audio, video and similar electronic apparatus - Safety requirementsEN60065:1998
EN301 489-9 V1.3.1
(2002-08)
Electromagnetic compatibility and Radio spectrum Matters (ERM);
Electromagnetic Compatibility (EMC) standard for radio equipment and
services;
Part 9: Specific conditions for wireless microphones, similar Radio
Frequency (RF) audio link equipment, cordless audio and in-ear
monitoring devices
6/10/2005
Wireless True Diversity Receiver
UM1, CT7, HT7
Samson Concert 77
Douglas Bryant
President
UM177_ownman_4L_v1.indd 45 10/16/05 5:09:33 PM