[AMRadio] EF Johnson Messenger II on 10 Mtrs - Project


rbethman rbethman at comcast.net
Thu Aug 20 15:30:25 EDT 2009


Remember that attachments are stripped!

No one got the schematic.

Bob - N0DGN

WØTDH wrote:
> EF Johnson Messenger II on 10 Mtrs - Project
> Some progress. Xmtr now puts out about 6 watts on 29.100kc. Tweaked tank & by-passed R-48.
> Dave - WB1EAD sent me a xtal for 29.100kc  ( xmit ).
>
> Rcvr another story. Still fiddling with the rcvr VFO. ( Continuous rcve function )
> Schematic attached if anyone has an idea of how to bring rcve up to 29.000 / 29.100kc area.
>
> Dale - W4OP states xtals are third harmonic. Rcve xtals are less 455kc. Will order a few from Brian. 
>
> Using xtals on rcve, should just be a matter of tweaking..... I hope. 
> Still would like to use the continuous rcve function though.  
> L-113 ( shown L-13 in schematic ), does adjust as does the trimmer C-111 attached to it, but not nearly enough. 
> Add / subtract capacitance? 
> There are two small disk caps with one side of their leads twisted together ( gimmic? ) in the VFO area.
>
> Any help would great.
> 73,
> Tom
> Thomas F Fischel - WØTDH
> 8274 Cullowhee Mountain Road
> Cullowhee, NC  28723
>   



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