On Sat, 01 Jan 2011 13:49:51 -0500, Richard A. (Tony) Stalls wrote:

>My TR7 drifts around 100-150 Hz PTO during the first hour.  After 
>that it calms down a bit, but it still drifts.  I've come up with a 
>couple of potential solutions, but to be truthful, I don't know 
>enough to competently decide if they're what I want.

Do you have the optional fan on the radio? The fan, properly oriented to pull
air OUT, will help keep the temperature around the PTO more stable through
TX/RX cycles.

>Does anybody have any experience with either of these huff-puff 
>stabilizers, or is there a better way?  How about for the RV7?

If I understand the application of these gadgets, you would need one inthe RV-7
too.

73

-Jim


--
Ham Radio NU0C
Lincoln, Nebraska, U.S.S.A.
TR7/RV7/R7A/L7, TR6/RV6, T4XC/R4C/L4B, NCL2000, SB104A, R390A, GT550A/RV550A, 
HyGain 3750, IBM PS/2 - all vintage, all the time!

"Give a man a URL, and he will learn for an hour; teach him to Google, and he 
will learn for a lifetime."

HyGain 3750 User's Group - http://groups.yahoo.com/group/HyGain_3750/
http://incolor.inetnebr.com/jshorney
http://www.nebraskaghosts.org



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