Good Aftenoon, 

I just uploaded three photos to the folder labeled "PD455 Antenna".  
Please take a look at the photos and see if you can help me identify 
who makes this part.

It is some sort of RF adapter which Celwave/RFS uses in the 
manufacturing process when making PD455 style antennas.

Basically, it is threaded up into the base portion of the antenna, 
and once installed, it appears as if the antenna is terminated with 
an N Female jack. In reality, the antenna is actually terminated with 
some sort of propietary (guessing?) connection, which this adapter 
converts to an industry standard N Female, as specified in their 
product literature. This so-called propietary connection appears to 
be quite similar to a UHF termination, but a close inspection of the 
photos will show that the center insulation design is slightlty 
different, and the male pin up inside the threaded male end of the 
antenna itself looks deeper than a standard UHF male connection.

Calls to RFS have been useless. They claim there are "no replacement 
parts" available for the Stationmaster antennas, and they do not 
repair them. Hard to believe that a $1000 antenna is considered throw-
away material nowadays.  I have contacted all of the RF connector 
manufacturers which I could think of (Amphenol, Kings, Delta), and 
while the part resembles either an Amphenol or Delta part, neither 
claim to make it. 

As you can see in the photos, what had happened is that a 1/2" Heliax 
jumper connected to the antenna became loose at 400+ft in the air, 
and the center pin arc'ed away. Upon removing the hardline N male 
connector, I was greeted with a cloud of carbon dust! The N female 
center pin was burned away. 

I was able to use a standard UHF Female - N Male adapter coupled to 
a N Female - N Female adapter, and threaded the UHF end up into the 
antenna, to sweep the antenna on an analyzer , verifying that the 
actual antenna itself is still good after being up on a tower for 10 
years. I'd like to re-deploy the antenna, but I'm not a big fan of 
using adapters up on a tower, so I'd like to get the OEM part and 
properly repair the antenna.

Anyone have any ideas?

Eric
KE2D



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