[Boatanchors] Viking II Modulation Problem

[Carl]

If it was factory built it has a chance of being correct and unhacked. If it 
was a kit than anything is posible.

Carl
KM1H


----- Original Message ----- 
From: "Al Parker" <anchor at ec.rr.com>
To: "Richard W. Solomon" <w1ksz at earthlink.net>; 
<boatanchors at mailman.qth.net>
Sent: Saturday, October 10, 2009 10:28 AM
Subject: Re: [Boatanchors] Viking II Modulation Problem


> Seems like the screens oughta be bypassed originally.
> 73,
> Al, W8UT
> ----- Original Message ----- 
> From: "Richard W. Solomon" <w1ksz at earthlink.net>
>
>>I decided a scope would help in tracking down why I
>> have low modulation levels.
>> Surprise !! Looking at the Plate and Screen of the
>> second audio stage I get a high level of oscillation
>> as I crank the Gain Pot past about 4 on the dial.
>> I don't see any oscillation on the Grid ??
>>
>> This is the stock Viking II audio circuit, no mods
>> made except to replace the caps.
>>
>> Maybe I should bypass the screen of the second stage ??
>>
>> Any thoughts ??
>>
>> 73, Dick, W1KSZ
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