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Author Topic: Collins VHF-251 help/manual  (Read 4361 times)

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MarkG

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Collins VHF-251 help/manual
« on: August 13, 2010, 07:17:26 PM »
If you are familiar with the Collins VHF-251, please give me a shout.  I am looking for operating instructions and any hints about swapping out a VHF-250 for it.

-- MarkG
"Life has meaning, but a poor signal-to-noise ratio."
Now flying N7204T, or planning a flight...

-- Mark G.

Avionics

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Re: Collins VHF-251 help/manual
« Reply #1 on: August 16, 2010, 07:45:00 AM »
VHF-250, VHF-251, VHF-250S, VHF-251S, VHF-250E, and the VHF-251E all share the same rack. No wiring changes. Is this what you wanted to know?
I own Avionics Shop, Inc., at KTIW.... call me Crazy Dan!

slacktide

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Re: Collins VHF-251 help/manual
« Reply #2 on: August 16, 2010, 08:47:07 AM »
If you are familiar with the Collins VHF-251, please give me a shout.  I am looking for operating instructions and any hints about swapping out a VHF-250 for it.

-- MarkG



Pinout diagram...

http://www.flycorona.com/manuals/Colins_VHF250-251series_Pinout.pdf
Dan Baisley
N28264 - '79 Tiger @ PAE

Gordon Cooper: You boys know what makes this bird go up? FUNDING makes this bird go up.
Gus Grissom: He's right. No bucks, no Buck Rogers.

-- The Right Stuff (motion picture)

MarkG

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Re: Collins VHF-251 help/manual
« Reply #3 on: August 18, 2010, 02:26:42 PM »
Well, I already know it (VHF-251) is plug-compatible, I wanted to know how many frequency memories, plus any experience anecdotes, and troubles to watch out for...
Have gotten some good use from it already since first post...

-- MarkG
"Life has meaning, but a poor signal-to-noise ratio."
Now flying N7204T, or planning a flight...

-- Mark G.

Avionics

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Re: Collins VHF-251 help/manual
« Reply #4 on: August 19, 2010, 09:55:16 PM »
it can only store one frequency at a time.

One of the biggest frequent problems with them is the "Store/Recall" feature. Its spring loaded towards store. Be gentle with it. The gearing is made of plastic thats very old, and breaks easily. NO parts available, if it breaks.

The other problem is the transmitter can sometimes start to "FM-ing" during transmitt. I have long ago forgotten what it takes to fix this problem. But these radio's are available so cheap, its not worth fixing.

Hope this helps.
I own Avionics Shop, Inc., at KTIW.... call me Crazy Dan!