PRO.SIS.TEL. PST-DDR5 User manual

PST-DDR5 - 6 - 7
Assemblyng instructions:
The antenna can be assembled in different ways:
Assemble it on two sawhorses and then carry it on the mast or pre-assemble the elements and then complete
the assembly on the mast.
In both cases it is preferable to prepare before the elements and then the boom. If possible, given the
delicacy, the supply lines it is preferable that they are installed with the antenna on the mast already.
Extracting elements from the carton, you will find the element tubes pre-assembled elements, in a telescopic
set. Tilt the tube set, ma e sure that all heads of each diameter escape from the main pipe. Do not forget to
lubricate the thread of steel bolts, left to dry may stiff them.
Place the element on a plan, and begin to asembly the smaller diameter,
Align the hole of the inner tube with hole of the outer tube. The fastening of the elements ta es place by
inserting the bolt from the larger hole so that the cylindrical bolt head pass thoroughly and rests on the inner
tube fig.2. Some sections are multi-perforated to facilitate the adjustment, always start from the center hole,
and then shorten or lengthen it if antenna is too long or too short.
Using the same technique, extract and splicing all sections and traps.
Tighten the nut. Ma e sure that all bolts heads are on the same side.
The central element of the Director and radiator are pre-assembled on the boom mounting plate already. It
will then be attached to the boom with square U bolt.
The traps are equipped with drainage holes that need to be down.
When the two half-elements are ready, prepare the two radiators center plate as in the photo and drawing.

Assembly diagram of the supply lines views from above and below.
The fixing baseplate of the elements holder and the mast-boom plate were replaced with square
U-bolts.
Alimentazione
Boom
40x40mm
Profilo
U80x40mm
RF in
10-15-20m (40m) - radiator
Left
Balun 1:1
Right
Coupling lines (see as top transparent view)
12-17m (30m)- radiator

Antenna view after assembling
PST-DDR
PST-DDR6-30
PST-DDR6-40
PST-DDR7
Boom 40x40mm
Mast ø48mm
ø50mm U bolt
12-17m (30m)- radiator
Rotating radius ~ 5,3m
Rotating radius ~ 4m
Rotating radius ~ 6m
Rotating radius ~ 6m

For best performance we recommend mounting at a
height of at least 5-7or 1 m above the ground.
Do NOT SEALED THE JOINTS, ANTENNAS MUST
BREATHE, condensation could cause serious harm to
normal operation
Specifications:
- Bands = 1 -15-2 m(4 m) – 12-17m (3 m) rotating dipole (antenna as decent performance in 6m too)
- Gain = dB
- Impedence = 5 ohm
- Front/back (about) = dB
- Front-side = >2 dB
- ROS = see grafics
- Boom lenght = 1m
- Rotating radius = about 4 to 6m (depends from which model you choose)
- Weight = about 1 to 18 kg (depends from which model you choose)
- Take 4 to 5 mm mast pipe (series) o 6 mm (optional)
- Material = AL6 6 T6, SS hardware.
SWR main curves.

Single band SWR curves
SWR diagram, can change due environment influence.
Install at heights lower than recommended might not work on lower bands.
18m
20m
12m
30m
15m 10m
40m

How to install 3 m or 4 m kit
If you want expand the bandes of your PST-DDR5 to a PST-DDR6-30 or PST-DDR6-40 or to a PST-DDR7, installs
the optional band expansion it as above. Ta e away the 17 or 20m ends and install new band expansion it.
Antenna length may vary based on setting and / or possible environmental influences
Specifications may change without notice, performance notwithstanding
Warning:
Do not install the antenna near power lines or equipment that could cause electrical contact. You could be
seriously injured or killed.
The antenna must be installed in accordance with laws / regulations / local / national.
If necessary, consult a professional installer.
Prosistel cannot be sued for damages for any non-compliance with the rules.
Thanks for your preference in our products.
If you are satisfied tell others, if you are not satisfied tell us.
The positive or negative comments help us to improve our work.
73 de IK7MWR
Annamaria Fiume
! WARNING Defend the environment
Disposing components and materials
The antenna consists mainly of aluminum, in the event of disposal, conferred the scrap to a specialized disposal center, in
compliance with the requirements of the laws.
17m end
30m end 17m trap
20m trap
20m end
40m end + capacitive loads