5100 UHF vs 800 antenna

Forum dedicated to discussion on EF Johnson Radio products such as the VP8000, VP6000, VP5000, VM7000, VM6000, radios. Support for Armada software platform.

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n3obl
Posts: 70
Joined: Fri Oct 28, 2005 9:59 pm

5100 UHF vs 800 antenna

Post by n3obl »

Is there anyway to tell the difference between the two antennas. They dont appear marked.

Reason im asking is i have a UHF and i think it has an 800 antenna on it and it seems like reception is off.

Frank
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Intrinsically Safe
Posts: 347
Joined: Sat Oct 13, 2007 9:19 pm

Re: 5100 UHF vs 800 antenna

Post by Intrinsically Safe »

If you look at the bottom of screw in end, the 800mhz has a white ring. The uhf will depend on the split.

I.S.
Sean Penn: Last year I went to Iraq. Before Team America showed up, it was a happy place. They had flowery meadows and rainbow skies, and rivers made of chocolate, where the children danced and laughed and played with gumdrop smiles.
n3obl
Posts: 70
Joined: Fri Oct 28, 2005 9:59 pm

Re: 5100 UHF vs 800 antenna

Post by n3obl »

i took one off my 800 and uhf they are both red.

Frank
n9llo
Posts: 73
Joined: Thu Aug 01, 2002 11:23 am
Location: Indiana

Re: 5100 UHF vs 800 antenna

Post by n9llo »

My uhf low split has a white ring????

Chris
N9LLO
n3obl
Posts: 70
Joined: Fri Oct 28, 2005 9:59 pm

Re: 5100 UHF vs 800 antenna

Post by n3obl »

Im really thinking of just putting a MT2000 style antenna on my EFJ radio.

Frank
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Intrinsically Safe
Posts: 347
Joined: Sat Oct 13, 2007 9:19 pm

Re: 5100 UHF vs 800 antenna

Post by Intrinsically Safe »

You know after reading this again, I think I was remembering their old 800 only antennas. They had two white rings on the top of the antenna. So I went and pulled this out of an old service manual
136-174 wideband Helical (Red Core)
136-151 Helical (yellow core)
151-166 Helical (black core)
166-174 Helical (blue core)
403-520 whip dipole
800 1/2 wave (red core)
800 1/4 wave (white core)

Not sure if it helps or how current it really is.

I.S.
Sean Penn: Last year I went to Iraq. Before Team America showed up, it was a happy place. They had flowery meadows and rainbow skies, and rivers made of chocolate, where the children danced and laughed and played with gumdrop smiles.
125
Posts: 19
Joined: Wed Apr 08, 2009 2:46 pm

Re: 5100 UHF vs 800 antenna

Post by 125 »

I just got one of these antenna's it says Motorola 800 on it and it has a red ring inside (I got it off a e-bay dealer) it is a VHF wide band I did check it out on VHF and on 800 (800 sucks) even though it looks like a UHF whip. ( I did confirm from the dealer that it was indeed VHF).
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