[Boatanchors] Viking II Modulation Problem

[Jack]

Are the tube sockets riveted on the chassis or screwed?
73,
jack

On Oct 10, 2009, at 1:03 PM, Richard W. Solomon wrote:

> Don't know if it was factory built or a kit, but the physical
> circuitry matches the schematic in the manual.
> Beyond that, my Xtal Ball gets cloudy !!
>
> 73, Dick, W1KSZ
>
> -----Original Message-----
>> From: Carl <km1h at jeremy.mv.com>
>> Sent: Oct 10, 2009 1:53 PM
>> To: Al Parker <anchor at ec.rr.com>, "Richard W. Solomon" <w1ksz at earthlink.net 
>> >, boatanchors at mailman.qth.net
>> Subject: Re: [Boatanchors] Viking II Modulation Problem
>>
>> 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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>
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