[600MRG] More 630m antenna efficiency...

[lstoskopf at cox.net]

Come on Dave.  Waste that power.  The FCC says to put out 5 watts EIRP and they don't care how much power the worms get.  So here's my solution for this Winter.

(picture attached if it goes thru)

There is a guy on eBay selling KW CB amp board sets partially constructed.  I called and asked if he would build one for me with Laird ferrites for the low two bands.  He mentioned that he could build one with two BLF188 LDMOS devices that would handle more than a few KW.  I had to do the machine work.  So here's an amp good for a few KW.  That means that along with these rugged devices I can run the amp into a heavy RF pad to the antenna which will help protect the amp from antenna electrical stuff or the antenna falling down giving a high SWR, etc.  Also can run the feed thru a directional coupler and dump at least some of the return wave to the ground instead of matching the antenna doing somewhat away with that ugly antenna tuner.  I've been told the HAARP antenna does something like that.  Lots of fun stuff to try.  And that's what Hams are supposed to do.

Plus....hey, it is going to be winter and I won't have to run the shack heater when I'm putting a few KW into the amp and radiating 5 watts.

This allows a whole new concept in amplifier design and still is legal.  Now if anyone could come up with a standard way of measuring EIRP!

Let the "trubble wrestling" begin.

N0UU

> On September 1, 2018 at 9:37 AM Dave Riley <dave.riley3 at verizon.net> wrote:
> 
>     It's fun to see the banter and playback all around... Termination of this discussion ended up around 1.65/1 SWR, ( self written results ) ...
>     Brain food, that's all it is, and maybe a good antenna...
> 
>     Now for the next batch of toil and trubble to wrestle over...
> 
>     I am a confirmed loopest and have sworn NEVER to divert ANY RF in to a lossy ground system... EVER...
>     To that end I promise to keep all power possible in the LOOP, as it were... Enuf of it gets lost in the ground as it stands already...
> 

 
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