[MRCA] BC-375 / BC-348 liason setup

D. Platt jeepp at comcast.net
Tue Apr 29 15:17:44 EDT 2014


On 4/29/2014 3:03 PM, mbdittmar at comcast.net wrote:
> Attached are some pics of the BC-375 / BC-348 liason setup with 
> dynamotors, etc I've been working on recently.  It is set up to run as 
> original as possible.   Tom KD0VBR and myself had a nice CW and then 
> AM QSO on 1900 khz last sunday afternoon with both of us using nearly 
> identical setups.  Communication quality was excellent.  Of course we 
> are only about 15 miles apart.  Headphones required to block out the 
> noise of the dynamotors.
>
> Batteries and 28V 30 A power supply on bottom shelf, dynamotor and 
> spare TUs on second shelf, BC-348 receiver and BC-221 freq meter on 
> 3rd shelf, and top shelf ( with the 4 exposed 211s ) is of course the 
> BC-375.  Getting about 2 A of antenna current into a directly fed 
> inverted L about 65 feet total length....about 200 W input ( ~1000 V 
> at 200 ma ) power.
>
> 73
> Mark AB0CW
>
>
>
Mark,

That's a fine accomplishment!  But, just curious as to what kind of 
FMing you find you have at that power level?  We've found that limiting 
the power to about 50-60w out and, after tweaking the neutralizing for 
minimum FM, the "wobbulation" can be brought down to a very respectable 
level.

Jeep - K3HVG
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