[Elecraft] LDMOS for QRO

[Wes (N7WS)]

On 12/14/2014 2:10 AM, Edward R Cole wrote:
>
> 1500w mobile!!!  Are you serious?  I'd guess 200-250w would be adequate for 
> mobile.  But I do not do serious HF'ing.
>
When you get serious, here's how to do it.  My Elmer, W7UVR, ran a high level 
modulated 4-1000A mobile in the 1950s. Later went to SSB and a 15KW generator in 
a bigger trailer.  The one in the photo (trailer) was "only" 5KW.  The whip 
antennas had motor-tuned matching networks with vacuum variables and edge-wound 
inductors. The beam was later replaced with a tribander, diced up with machined 
tubular hinges built by a tool-maker ham friend.

http://www.k0bg.com/gallery2/main.php?g2_itemId=1039

http://www.k0bg.com/gallery2/main.php?g2_itemId=1042

http://www.k0bg.com/gallery2/main.php?g2_itemId=1045

Wes  N7WS