[Johnson] Ranger VFO chirp on 40 Meters

[Jbrannig at verizon.net]

I solved my Ranger VFO problems by replacing all the Silver mica capacitors 
in the circuit.

Jim

-----Original Message----- 
From: Eddy Swynar
Sent: Friday, March 07, 2014 7:50 AM
To: keckerle at chartermi.net
Cc: johnson at mailman.qth.net
Subject: Re: [Johnson] Ranger VFO chirp on 40 Meters


On 2014-03-07, at 7:43 AM, keckerle at chartermi.net wrote:

>
> I have a server chirp on 40 meters and up.  There is no chirp on 160 and 
> 80 meters.  I have verified that the OA2 voltage regulator in the VFO 
> compartment is functioning correctly.  Any suggestions would be greatly 
> appreciated.
> K8FE




Dear OM,

Is the chirp the ABSOLUTE worse on 40-meters, than on the other high 
bands...?

I had a similar situation here with my Ranger years ago, that I traced back 
to feedback into the VFO from the rest of the rig. Keep in mind that on 
40-meters, the VFO frequency operates "straight through" to the final PA 
stage: no doubling / tripling.

Why I never had the same troubles on 160-meters is a mystery to me---perhaps 
the fundamental 1.8-MHz signal frequency is low enough that it was somehow 
"immune"...?---not so on 7-MHz, however...

~73~ de Eddy VE3CUI - VE3XZ

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