Wondering if anyone would care to take a guess as to what kind of
antenna
I have here. The only marking on it is "Motorola" near the bottom.
The antenna is 7 and 1/4 inches long and flares a bit near the bottom,
its BNC type and has a small round "ball" near the top. It RX's "OK"
on commercial UHF but rolls off near the ham bands of UHF which makes
me think its not UHF at all. Different antenna on same radio is like
night and day. Take a guess?

Thanks

http://f1.pg.photos.yahoo.com/ph/njc....src=ph&.view=

it might be an 800/900mhz antenna.
hard to tell as many look similar.
might need to put on an antenna analyzer.

I do have almost the same but not BNC which is used for 403-470 mHz...
Ruut
"AC6JA" schreef in bericht
...
it might be an 800/900mhz antenna.
hard to tell as many look similar.
might need to put on an antenna analyzer.

tough call. At first I thought 800MHz, but is too long for 800MHz, not
shaped right for 800MHz gain, and never saw an 800MHz with BNC connector,
so....

Its probably either a 1/4 wave UHF, or a loaded VHF..... kinda hard
to tell... depends on whats inside the "fat" part of the rubber covered
base.



Perhaps you could mount it on the output of a wattmeter with
appropriate adapter, and test a low powered VHF and then a UHF radio into
it and check the SWR.

Another idea..... take a known ham dual band HT with BNC connector,
check a constant level VHF and then a UHF signal strength with the HTs
antenna, then swap with the unknown antenna and compare again.....




Ed WB6SAT

I don't think Motorola ever made an 800 MHz antenna with a BNC, it is
likely a UHF model. Is there a color code anywhere?

Rod B wrote:

Wondering if anyone would care to take a guess as to what kind of
antenna
I have here. The only marking on it is "Motorola" near the bottom.
The antenna is 7 and 1/4 inches long and flares a bit near the bottom,
its BNC type and has a small round "ball" near the top. It RX's "OK"
on commercial UHF but rolls off near the ham bands of UHF which makes
me think its not UHF at all. Different antenna on same radio is like
night and day. Take a guess?

Thanks

http://f1.pg.photos.yahoo.com/ph/njc....src=ph&.view=




--
Joe Leikhim K4SAT


"Jazz is not dead. It just smells funny." -F.Z.

what color is the bottom of the BNC connector??? (usually BLACK)


Looks like a UHF antenna for the HT-90 or HT-440 radio by Motorolaâ„¢. I think
these are the only radios that used a BNC connector.


Also- Motorola never has used a BNC on a 800 MHz. radio.