[Lowfer] Current Fed Modification to G0MRF transmitter

[Warren K2ORS]

Mitch,

       Thanks! Food for thought!
73 Warren

On 12/15/2012 1:30 PM, Mitch Powell wrote:
> Warren:
> Changed mine over several years ago..... used the 12 strands idea ( looks like about 26/28 gauge)
> twisted and covered with "spaghetti ) -- a piece of rg174  rubber cover that I stripped off.)
>     Then I used  # 14 enamel on the secondary.  Runs very cool and have had no problem since.
>
> Dex also modified his - we had compared note at the time.
>
>
> Mitch
> On 2012-12-15, at 11:16 AM, Warren K2ORS wrote:
>
>> Hello the list...
>>        Since my G0MRF is experiencing intermittent short circuit in the final amp, I plan on re-doing the output circuit per the M0BMU modification:
>> http://www.g0mrf.com/images/300w/PA_schematic.jpg
>>        The M0BMU mod changes the circuit to a current fed design which improves the efficiency. The mod calls for a transformer primary winding using 12 strands of 0.3mm e.c.w. (enamel covered wire).
>> I assume that the 12 strands are used to improve the Q similar to the way Litz wire works?
>>         Has anyone done this mod? Has anyone tried alternatives to the 12 strands of enamel wire?
>>
>>    73 & tnx Warren K2ORS
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