PRO.SIS.TEL. PST-RD34T User manual

PST-RD34T v1.0
Antenna assembling instructions:
Take antenna parts out the box and find the semi-dipole main alluminum tubes. They have pre-assembled
inside the other tubes in a telescopic sequence. Tilt down the main tube end and shake it to have each one
inner tubes heads out for about 15 cm or 6 inch. Make sure to have enou h free space to extend the entire
semi-dipole. Pull out the smaller tube, find the passtrou ht hole on the inner end, make it coincident whith
the passtrou ht hole present on the next diameter tube which has two different diameter holes, from the
lar er hole side insert and push down the hallen screw passin trou ht the inner tube hole, put washer and
selflock nut and screw down.
Make sure to have the bolt head as in the picture below. Do not for et to lubrificate the stainless steel bolts
or nuts before to install them. Any kind of oil or rease is ok.
Do the same way for the other tubes joints. Some inner ends have more holes, they will help you in tunin
antenna on your preferite band section, use the one in the middle for now.
Make sure to have heach one tubes connection havin bolts head on the same side.
When completed, insert on the semi-dipole end the trap set. Bolt down each one tube joint followin the
same way used before. Ma e sure to have traps drainage holes on the lower side.
When the two half dipole are ready, prepare the central plate and assemble all the parts as in the
pictures below. Make sure to have about 10-12mm or half inch of clearance in between the two
dipole ends, with connection bolts ali ned on the front side.
The truss cable will only be installed when the dipole is completed.
The antenna has a series of holes on the D6 20mm tube section before the 30m trap with which you
can adjust the 30m tunin and a set of holes on the terminal end D8 for 40m tunin .
Tune 30m before and after 40m ends. By shortenin it rises, len thenin decreases in frequency.

Connect a 1:1 balun (su ested) usin two short wires, not lon er than 8-10 cm or 3-4 inches
(connctions wires will influence the antenna tunin makin it lon er), if you don’t use a balun, than
use a coax cable choke, open the coax ends to have two short leads like a V no lon er than 3-4 cm
or 1-2 inches, solderin on them two eyelet ends. Don’t for et to insulate and seal coax end from
moisture. (If you don’t have any sealin liquid, use nails paintin and when dry, cover with ood
rubber tape)
(Balun and eyelet ends are optionals not included in the antenna parts)
Balun or coax choke do not improve antenna performance, but reduce the RF presence on the coax
shield reducin the risk of TVI or other RF noise on electronic devices.
When assembled antenna will looks like the one in the picture below.
Half dipole tapering
D1 40x125/D2 35x94/D3 30x105/D4 25x105/D5 25x75/D6 20x104/D7 16x30/D8 12x80mm
D2 has load coil on it. D6 has 30m trap on it.
D6 has 30m t ning steps, D8 has 40m t ning steps
For constructive requirements individual measurements may under o variations without chan in
the final operation
Install antenna on your mast, make sure to have almost 5-6meters or 15-20 ft over the roof or
round and if installed over an HF ya i antenna, make sure to have dipole in line with ya i’s boom
spacin them almost 2m or 8 ft. Antenna will have the best performance if installed almost a ¼
wave of the lower frequency band, over the round.
Usin an antenna analizer or a SWR meter, check the antenna tunin on each band.
Antenna tunin frequency could be influenced from the environmental conditions for which could
became necessary retunin it. If necessary be in from the hi her band, unbolt the multi holes dipole
joints and move to next hole, don’t for et, lon er element lower frequency, shorter element hi her
frequency.
When the tuning operations are completed, chec all bolts, ma e sure that they are well
screwed down.

Performance:
The antenna has a bandwidth of 180-200Kc/s with center band at 7080-70100Kc/s approximately.
It covers the entire ran e of 30m.
Performance may vary dependin on the local conditions in which the antenna is installed.
However, it is advisable not to install it at a hei ht less than 5 m from the roof/ round.
Tuning charts at 10m above the ground.
Specifications:
Gain = 0 dBd
Bands = 40m – 30m
Front-side = about 15 dBd
Impedence = 50 ohm
ROS = within 1:1,5 or better
Max power: 2KW ssb, 1,5Kw cw-rtty
Reccomeneded balun 50 ohm 1:1
Total lenght = about14,25m
Weight = about 8 k
Wind area = about 0.3m2
Mast diameter = 40-50mm (60mm on request)
Max wind = 130Km
Hardware = Al 6060 T6 stainless bolts

WARNING!!!
Do not install the antenna in the vicinity of exposed power lines or other sources of power at
ris of lightning, you may be illed or seriously injured. Ma e sure anyone does not even
come into contact with it accidental during use
Install the antenna on properly dimensioned supports to hold the load even under stormy
wind conditions.
The fall of all or part of it could hit people and / or things with unrecoverable damages.
In case, the responsibility is to be solely charged by the user.
This manual is an integral part of the product, eep it handy.
Dear buyer,
thank you for purchasing a Pro.Sis.Tel antenna ..
Making it we have used the best materials available on the market, worked and finished
with the best care possible allowed by the state of art.
Use it within the rating for which it was built and will serve you faithfully for many years.
In case of doubts or concerns, our technical department is always ready to provide all the
necessary help.
If you are satisfied with it tell the others, otherwise ...... tell to us.
Your opinion and your suggestions will help us to improve even more our products.
Best regards
Annamaria Fiume IK MWR
Made in Italy
WARNING! Defend the environment
isposing 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 local law.