[ARC5] OT? bc-348 bfo question

[Joe Connor]

I know, I know.

           Joe Connor



>________________________________
> From: Ronnie Hull <w5sum at comcast.net>
>To: Joe Connor <joeconnor53 at yahoo.com> 
>Cc: "lu2dfm at gmail.com" <lu2dfm at gmail.com>; "arc5 at mailman.qth.net" <arc5 at mailman.qth.net> 
>Sent: Friday, September 13, 2013 5:08 PM
>Subject: Re: [ARC5] OT? bc-348 bfo question
> 
>
>Modify a bc348? BLASPHEME!
>
>Sent from Ronnie's IPhone
>
>On Sep 13, 2013, at 10:46 AM, Joe Connor <joeconnor53 at yahoo.com> wrote:
>
>> Fernando:
>> 
>>     I can't specifically answer your question but I suspect this is the reason a lot of people modified
>> BC-348s to separate the RF gain from the AF gain. The Surplus Radio Conversion Manual by Evenson and Beach explains how to do this. If you run a google search, you can find it and read the appropriate section.
>> 
>>                                      Joe Connor
>> 
>> 
>> 
>>> ________________________________
>>> From: Fernando - LU2DFM <lu2dfm at gmail.com>
>>> To: arc5 at mailman.qth.net 
>>> Sent: Friday, September 13, 2013 11:28 AM
>>> Subject: [ARC5] OT? bc-348 bfo question
>>> 
>>> 
>>> 
>>> Sorry if this is OT here.
>>> 
>>> I'm repairing and aligning a BC-348 (E, M or P variant, don't know
>>> exactly which).
>>> 
>>> The set is going on very well on AM so far, however the BFO injection
>>> level seems to be too low for SSB on strong signals. It's possible to
>>> get SSB on the headphones with MVC and _very_ low RF gain.
>>> 
>>> All voltages and resistors values are ok around that stage with and
>>> without BFO on. The xtal filter is ok too (bandwith with xtal on is about
>>> 1-2 kc).
>>> 
>>> The 2nd IF/CW osc. is the 6B8/VT93.
>>> 
>>> Anyone knows what the level of the BFO is supposed to be? 
>>> 
>>> Thanks.
>>> 
>>> -- 
>>> 73 de Fer, LU2DFM
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>