[Boatanchors] Multi Elmac AF67

[Dennis DuVall]

On the PA end of the AF-67 I found the output variable capacitor was just too small to allow the radio to be properly loaded into 50 ohms on 160M.  
Added additional fixed  capacity and inductance in an outboard minibox to form a Pi-L network.  Works great!

Also, the audio driver xformers in these radios are prone to failure.  There’s a nifty phase inverter “fix" for this.  Circuit on request.

Dennis D.  W7QHO
Glendale, CA

****************
> On Nov 23, 2015, at 12:36 PM, Glen Zook via Boatanchors <boatanchors at mailman.qth.net> wrote:
> 
> I need a new 160-meter VFO coil for my AF-67.  The original is damaged and, of course, that affects the other 2-VFO frequencies as well. Glen, K9STH Website: http://k9sth.net
>      From: D C _Mac_ Macdonald <k2gkk at hotmail.com>
> To: "bcarling at cfl.rr.com" <bcarling at cfl.rr.com>; "Maynard Wright m-wright at eskimo.com [multi_elmac]" <multi_elmac at yahoogroups.com> 
> Cc: "boatanchors at mailman.qth.net" <boatanchors at mailman.qth.net>
> Sent: Monday, November 23, 2015 9:49 AM
> Subject: Re: [Boatanchors] Multi Elmac AF67
> 
> Some of us all already have a good AF-67 and/or AF-68 PLUS the matching receivers! 
> 
> 
> 
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