Laird Yagi Y1363 User manual

Yagi Tuning & Assembly Data
Introducon
Your new Laird Yagi antenna has been designed for accuracy, durability and value. Electrical designs are
opmized using the latest in computer aided technology. For fully welded and anodized models, all crical
element to boom joints are welded, the enre antenna is anodized, a heavy duty anodized cast mounng kit
is included and the antenna is internally matched. This provides for extremely high durability, resistance to
corrosion and an accurate radiaon paern.
Warning! Use extreme cauon when installing this antenna. Electrocuon and/or death can occur if this
antenna comes in contact with or comes near electric power lines.
400 to 1000 MHz Pre-Assembled & Welded Yagi Antennas
The internally matched, fully assembled and welded Yagi antenna for frequencies above 400 MHz is factory
tuned to the middle of the operang frequency range. The antenna features broad bandwidth and low VSWR
across the band. No further adjustment to the antenna is necessary. It is suggested, however that before
permanently mounng the antenna it should be checked for low VSWR. This can be done by temporarily
posioning the antenna on a mast at least four (4) feet above the ground and away from surrounding objects.
Apply RF power to the antenna and check for resonance.
Upon installaon of the antenna, aer installing the coax to the end of the boom, be sure to relieve the strain
on the feed joint. This can be accomplished by looping the coax to the mast, secure the coax to the mast with
a nylon e and then route it down the mast to the nal amplier.
Important Note: Insert boom into the mounng bracket; use hex bolts to ghten securely. Do not exceed 4-6
-lbs of torque on the hex bolts.
VHF User-Assembled Yagi Antenna
Follow the instrucons listed below to assemble your VHF Yagi Antenna:
Assembly Steps
1. Unpack the antenna and locate the following parts:
Boom (1-1/4" dia. for ve element model, 7/8" dia. for three element model)
3/8" Diameter Elements (Y—3 = three elements, Y—5 = ve elements)
Gamma Match parts bag
Mounng Bracket parts bag
2. To assemble a factory tuned model, locate the 3/8" diameter elements and proceed to step ve.
3. Field tunable models are shipped with the 3/8" diameter elements trimmed to the lowest frequency. In
order to tune your antenna to another frequency in its range, locate the elements and proceed to step
four.
4. Find the proper element dimension chart for your antenna on the next page and trim each element
according to your operang frequency. Use care to trim equal lengths from each end of each element
as there is a threaded mounng hole at the center. This mounng hole must be at the center of the
element aer trimming!
5. Insert the elements into their respecve locaons through the boom starng with R1 (the reector element)
in the hole closest to the mounng holes. Then insert Dr, D1, etc., in that order. Secure the elements with
the stainless steel 10-32 hex bolts and #10 lock washers provided. Complete the element installaon by
inserng the black end caps onto the ends of each element.
6. Locate the Connector/Brass tube assembly in the Gamma Match parts bag and insert the assembly tube
rst through the connector bracket then thread the connector into the bracket. Be sure to ghten the
connector fully. A drop of Lockte® or other threadlock may be used on the connector threads to elimi-
nate the possibility of the connector loosening. See Figure 1 (7/8" boom) or Figure 2 (1-1/4" boom) on
the back page for proper orientaon.
7. Slide the Gamma Link onto the driven element and assemble the Gamma Match as shown in Figure 1 or
2. Set dimensions “A” and “B” to those shown in Table 1. Seng the match to the dimensions shown
for your antenna is a good starng point which will enable you to quickly ne tune later. Complete the
assembly by aaching the end cap onto the end of the gamma tube. The antenna is now ready for Final
Tuning.
Final Tuning
Before nal installaon of the antenna, temporarily set it up in a clear area at least 6 feet above the ground.
Apply RF power to the antenna and check for low VSWR while performing each of the following steps:
A. First, loosen the set screw with the allen key provided and make a slight adjustment to
the aluminum gamma tube for lowest VSWR.
B. Next, adjust the gamma link along the driven element for lowest VSWR.
C. Repeat the above steps unl the best match is achieved.
D. Return to the dimensions shown in Table 1 if there is any trouble achieving a good match.
Important Note: Upon final installation, be sure the gamma match points up towards the
sky. Insert boom into the mounting bracket; use hex bolts to tighten securely. Do not exceed
4-6 -lbs of torque on the hex bolts.
Weather Proong
To weatherproof the coax connector and coax cable, slide the sealtube 3 (not included) onto the coax cable.
Tighten the coax connector and then posion the sealtube over the connector. Heat sealtube with a lighter
or other device, taking care not to overheat the tubing. Finish up with a coang of 3M® Skotchkote®for years
of performance.
Remember: SURROUNDING OBJECTS, EARTH GROUND AND THE TUNING ENGINEER ALL HAVE A GREAT
EFFECT ON VSWR AND RESONANT FREQUENCY! Obstacles in the paern of the antenna can shi the resonant
frequency lower by up to 1 MHz.
Warranty
Laird warrants to the original purchaser that our antennas will remain free from defects in materials and work-
manship for a period of one year from the purchase date. If any such defect is discovered within the warranty
period, Laird will at its sole opon, repair or replace your product free of charge. This warranty applies only
if the product is used as designed, and is void if the product is abused, disassembled, tampered with, used
unreasonably, or fails as a result of normal wear. Furthermore, this warranty applies only to defects which
occur where the proper product is selected as recommended by Laird and is used in the fashion recommended
by Laird. This warranty is in lieu of all other warranes, expressed or implied, and is limited to a period of
two years from the date of original purchase. Laird is not liable for incidental or consequenal damages of
any kind. Any warranty extended herein shall be limited to the price paid to Laird for the defecve product.
Where the period of warranty is governed by state or local law such period shall control.
WARNING!
YOU CAN BE KILLED IF THIS ANTENNA COMES NEAR OR IN CONTACT WITH AN ELECTRIC POWER LINE.
ALWAYS USE CAUTION WHEN INSTALLING THIS ANTENNA. STAY AWAY FROM ALL OVERHEAD WIRES OF ANY KIND.
©Laird - All Rights Reserved
Tel: [phone] • Fax: [phone] • www.lairdtech.com

Gamma Match Silver Series
6 Element Yagi
R1 DR D1 D2 D3 D4
D1
DR
R1
All charts shown in inches
All charts shown in inches
Y1363
Frequency Reector Driven Director1
(MHz) (R1) (Dr) (D1)
136 42-1/8 39 38
138 41-1/2 38-3/8 37-3/8
140 40-7/8 37-3/4 36-3/4
142 40-1/2 37-1/4 36-3/8
144 40-1/4 36-3/4 36
146 39-3/4 36-3/8 35-11/16
148 39-1/2 36-1/16 35-1/2
150 39-1/4 35-3/4 35-3/8
Y1365
Frequency Reector Driven Director1 Director2 Director3
(MHz) (R1) (Dr) (D1) (D2) (D3)
136 42-1/4 39 38 38 38
138 41-5/8 38-1/4 37-5/16 37-5/16 37-5/16
140 41-1/8 37-11/16 36-3/4 36-3/4 36-3/4
142 40-5/4 37-1/4 36-5/16 36-5/16 36-5/16
144 40-3/16 36-13/16 36 36 36
146 39-7/8 36-9/16 35-3/4 35-3/4 35-3/4
148 39-1/2 36-3/8 35-9/16 35-9/16 35-9/16
150 39-1/4 36-1/4 35-1/2 35-1/2 35-1/2
Y1503
Frequency Reector Driven Director1
(MHz) (R1) (Dr) (D1)
150 39-1/4 35-3/4 35-3/8
152 38-7/8 35-3/8 35
154 38-3/8 35 34-1/2
156 37-7/8 34-5/8 34-1/8
158 37-1/2 34-1/4 33-3/4
160 37 33-7/8 33-3/8
162 36-5/8 33-1/2 32-7/8
164 36-1/8 33 32-1/2
166 35-5/8 32-5/8 32-1/8
168 35-1/4 32-1/4 31-3/4
170 34-3/4 31-3/4 31-3/8
172 34-1/4 31-3/8 30-7/8
174 33-3/4 30-7/8 30-1/2
Y1505
Frequency Reector Driven Director1 Director2 Director3
(MHz) (R1) (Dr) (D1) (D2) (D3)
150 39-1/2 36-1/4 35-1/2 35-1/2 35-1/2
152 39 35-7/8 35-1/8 35-1/8 35-1/8
154 38-1/2 35-3/8 34-5/8 34-5/8 34-5/8
156 38 34-7/8 34-1/4 34-1/4 34-1/4
158 37-5/8 34-1/2 33-3/4 33-3/4 33-3/4
160 37-1/8 34 33-5/16 33-5/16 33-5/16
162 36-5/8 33-5/8 32-7/8 32-7/8 32-7/8
164 36-1/4 33-3/8 32-1/2 32-1/2 32-1/2
166 35-3/4 33 32-1/8 32-1/8 32-1/8
168 35-3/8 32-5/8 31-3/4 31-3/4 31-3/4
170 34-7/8 32-3/8 31-3/8 31-3/8 31-3/8
172 34-1/2 32-1/16 31 31 31
174 34-1/8 31-3/4 30-5/8 30-5/8 30-5/8
Y2203
Frequency Reector Driven Director1
(MHz) (R1) (Dr) (D1)
220 26 24-1/2 23-1/2
222 25-3/4 24-5/16 23-5/16
224 25-1/2 24-1/8 23-1/8
226 25-1/4 23-7/8 22-7/8
228 25 23-5/8 22-5/8
230 24-3/4 23-1/2 22-1/2
232 24-9/16 23-1/4 22-1/4
234 24-3/8 23 22
236 24-1/4 22-13/16 21-13/16
238 24-1/16 22-5/8 21-1/2
240 23-15/16 22-3/8 21-1/4
242 23-13/16 22-3/16 21
244 23-3/4 22 20-3/4
246 23-5/8 21-13/16 20-1/2
248 23-9/16 21-5/8 20-1/4
250 23-1/2 21-7/16 20
Y2205
Frequency Reector Driven Director1 Director2 Director3
(MHz) (R1) (Dr) (D1) (D2) (D3)
220 26 24-1/2 23-1/2 23-1/2 23-1/2
222 25-3/4 24-5/16 23-5/16 23-5/16 23-5/16
224 25-7/16 24-1/16 23-1/8 23-1/8 23-1/8
226 25-1/4 23-7/8 22-7/8 22-7/8 22-7/8
228 25 23-5/8 22-5/8 22-5/8 22-5/8
230 24-3/4 23-1/2 22-1/2 22-1/2 22-1/2
232 24-9/16 23-1/4 22-1/4 22-1/4 22-1/4
234 24-3/8 23 22 22 22
236 24-1/4 22-13/16 21-13/16 21-13/16 21-13/16
238 24-1/16 22-5/8 21-1/2 21-1/2 21-1/2
240 23-15/16 22-3/8 21-1/4 21-1/4 21-1/4
242 23-13/16 22-3/16 21 21 21
244 23-3/4 22 20-3/4 20-3/4 20-3/4
246 23-5/8 21-13/16 20-1/2 20-1/2 20-1/2
248 23-9/16 21-5/8 20-1/4 20-1/4 20-1/4
250 23-1/2 21-7/16 20 20 20
Y2503
Frequency Reector Driven Director1
(MHz) (R1) (Dr) (D1)
250 23-1/2 21-1/2 20
252 23-3/8 21-3/8 19-7/8
254 23-3/16 21-3/16 19-11/16
256 23 21 19-1/2
258 22-7/8 20-7/8 19-3/8
260 22-11/16 20-3/4 19-3/16
262 22-1/2 20-9/16 19-1/16
264 22-3/8 20-3/8 18-15/16
266 22-3/16 20-1/4 18-3/4
268 22 20-1/8 18-5/8
270 21-7/8 19-15/16 18-1/2
272 21-11/16 19-3/4 18-3/8
274 21-1/2 19-5/8 18-1/4
276 21-3/8 19-1/2 18-1/8
278 21-3/16 19-5/16 18
280 21 19-1/8 17-7/8
282 20-7/8 19 17-3/4
284 20-11/16 18-7/8 17-5/8
286 20-1/2 18-11/16 17-1/2
Y2505
Frequency Reector Driven Director1 Director2 Director3
(MHz) (R1) (Dr) (D1) (D2) (D3)
250 23-1/2 21-1/2 20 20 20
252 23-3/8 21-3/8 19-7/8 19-7/8 19-7/8
254 23-3/16 21-3/16 19-11/16 19-11/16 19-11/16
256 23 21 19-1/2 19-1/2 19-1/2
258 22-7/8 20-7/8 19-3/8 19-3/8 19-3/8
260 22-11/16 20-3/4 19-3/16 19-3/16 19-3/16
262 22-1/2 20-9/16 19-1/16 19-1/16 19-1/16
264 22-3/8 20-3/8 18-15/16 18-15/16 18-15/16
266 22-3/16 20-1/4 18-3/4 18-3/4 18-3/4
268 22 20-1/8 18-5/8 18-5/8 18-5/8
270 21-7/8 19-15/16 18-1/2 18-1/2 18-1/2
272 21-11/16 19-3/4 18-3/8 18-3/8 18-3/8
274 21-1/2 19-5/8 18-1/4 18-1/4 18-1/4
276 21-3/8 19-1/2 18-1/8 18-1/8 18-1/8
278 21-3/16 19-5/16 18 18 18
280 21 19-1/8 17-7/8 17-7/8 17-7/8
282 20-7/8 19 17-3/4 17-3/4 17-3/4
284 20-11/16 18-7/8 17-5/8 17-5/8 17-5/8
286 20-1/2 18-11/16 17-1/2 17-1/2 17-1/2
Gamma Match Dimensions (Table 1)
Model Freq. Dim "A" Dim "B" Model Freq. Dim "A" Dim "B"
Y1363 136 7-5/8" 4" Y2203 220 6-3/4" 3-3/8"
Y1365 136 6-7/8" 3" Y2205 220 4-3/8" 1-2"
Y1503 150 4-3/8" 2-3/8" Y2503 250 7-5/8" 2-1/4"
Y1505 150 4-5/8" 3-5/8" Y2505 250 7-1/4" 2"