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Radio Replacement



 
 
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Old March 18th 07, 11:37 PM posted to rec.aviation.owning
dave
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Posts: 68
Default Radio Replacement

I think he said that they told him it was the MHz crystal in the
original post.
Dave
M35

RST Engineering wrote:
Then you've answered your own question. You are happy with what you've got
and it is the least expensive option. The 170 series is the most
bulletproof radio yet to hit the market, and I include the venerable old
MK-12 (radios that glow in the dark).

Jan Crystal (Ft. Myers FL, google on them for a phone number) keeps an
incredible file of crystal specifications and I'd give it a 95% probability
that they have that crystal spec on file. Last time I bought a 0.003%
crystal from them it cost me about $20 plus postage, so for $50 you've got
your crystal.

Installing a crystal is about as difficult as changing your oil. Uncowling
the ******* is the hardest part, both with radios and engines. Once opened
up, finding the correct crystal to change is the hard part, but since your
radio shop just changed the crystal, I'd bet on the one that is has the
shiniest solder joints.

I've got the service manual ... WAIT JUST A FRIGGIN MINNIT ... the 170 is a
SYNTHESIZED radio; all the channels are derived from ONE MASTER
CRYSTAL...either ALL the channels work or none work, with the exception of a
dirty switch or a broken switch. Is it possible ... do ya think ... that
your radio shop is BULL****TING YOU???

You've got two crystals on the com side of the radio. One is the kHz.
crystal and one is the MHz. crystal. All the switches do is control a
digital divider that splits the single crystal into discrete channels.

Now, given that information, where do you think we should go?

Jim




"Jonathan Goodish" wrote in message
...


I have (2) KX170B radios which I'm very happy with



 




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