[ARC5] OT? bc-348 bfo question

[Jay Coward]

Check the feedback "gimmick" capacitor. It's a couple of twists of two wires.
Jay


-----Original Message-----
From: Fernando - LU2DFM <lu2dfm at gmail.com>
To: arc5 <arc5 at mailman.qth.net>
Sent: Fri, Sep 13, 2013 8:28 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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