[600MRG] Talking points, please for your version...
Neil Klagge
w0yse at msn.com
Wed Oct 11 13:18:07 CDT 2017
Hi DAve,
I agree with #1 and 2.
As for antennas, I wish I could put up a big loop. I am stuck with a vertical, top loaded by 3 -25’ wires that double as part of my upper guying system. A few radials at the base is the best I can do.
Your loop sure seems to work very well.
Neil, w0yse, running ~1w ERP (or, should I say QRP ;-)
Sent from Neil's iPad....
________________________________
From: 600MRG <600mrg-bounces at w7ekb.com> on behalf of dave.riley3 <dave.riley3 at verizon.net>
Sent: Wednesday, October 11, 2017 8:35:26 AM
To: 600mrg at w7ekb.com
Subject: [600MRG] Talking points, please for your version...
1. No _UTC_ rejection here so are we OK for Sunday 15th as part 97s??
2. _Inductor tuning;_ A ferrous metal slug ( powdered iron ) inside of
the coil will lower it's resonance frequency.
A non-ferrous slug ( brass ) will raise the frequency.
3. _R losses_; Forget R losses... Take them or leave them...
If you are at sea or on a salt water shore line then a vertical
wire/tower is #1... Salt water is the _'ground'_, perfect reference @ 630m..
If you live on several square/cubic miles of silica or rock then
forget lossy radial/vario versions... Ugh, too expensive both in bux and
losses...
Inland favorite here @ xsh/17 is for $20 dollars worth of quality
wire and a surplus vacuum variable cap. and you will have a high Q loop ...
Bonus for using this loop is that you get a 'quiet' receive
antenna, typical of loops...
Plus, it is effectively near free space...
Here is proof of performance starter>>
http://www.ebay.com/itm/14-AWG-Electric-Dog-Fence-Underground-Wire-45mil-LD-Polyethylene-Solid-Copper-/281660026962?var=&hash=item41943ef052:m:mDjlbixxz-1G6XuoOAHA-1A
GREAT HV insulation and stranded copper... NICE!!
Gudday from Dave at xsh/17
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