[Lowfer] Current Fed Modification to G0MRF transmitter

[Mitch Powell]

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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