[600MRG] Short Radial Observation - Updated
Dave Riley
dave.riley3 at verizon.net
Fri Aug 31 05:20:20 EDT 2018
A _LARGE_ IsoTron would be the caper.. Nothing connected to ground to
waste power... An IsoTron is a loop...
The BW might be so narrow that one may simply MSK the carrier frequency
away to affect a neat/clean ZERO when keyed and a ONE when not keyed...
A reject load for the SPACE signal would be nice...
A ONE FOOT vertical without losses is every bit as efficient as the
infamous W4 what's his name 600' tower...
All good rustic theory... No more worm warmers... The earth already has
a fever... A Wullenbebber if all else fails...
On 8/30/2018 9:44 PM, D.J.J. Ring, Jr. wrote:
> Come on, Dave, you think that ISOTRON would work on 630m?
>
> I always thought they were RF birdcages not like the G4ZU birdcage of
> 60 years ago which was like a SWISS QUAD and worked pretty well on 20m.
>
> I am with you, loops are the best, even a poor loop beats a typical
> ham vertical.
>
> Now if you had two 300 foot towers with 300 heavy wire between them,
> fed midway with 300 feet of wire in a Marconi T arrangement with 360
> one half wave radials around the base, it would work better, but only
> the government had that kind of money.
>
> I'm with you on the loops.
>
> 73
>
> David
> N1EA
>
> On Thu, Aug 30, 2018, 15:28 Dave Riley <dave.riley3 at verizon.net
> <mailto:dave.riley3 at verizon.net>> wrote:
>
> Good goin, Andy... You have discovered virtual 0 ohm ground ...
> Too bad
> all that power has to go to ground...
>
> You can still squeeze a few more signal strength units with
> 'resonant'
> above ground radials, a quarter wave long, based on what the
> ground is
> made of, high conductivity, low conductivity...... Place each
> radial in
> the favorite DX direction too, best still place same way wire above
> ground against the tuned ground wire for Isotron like operations..
>
> Why not like one of those ISOTRONs or Tesla coils for mobile 475 kc.
> work.. Guaranteed winner...
>
> Best thing about this one is you don't have to shunt all that
> power to
> ground... What a waste...
>
> https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcQZ6tpeaLl3yWKIQ0G2Y0hiFeGh1qRVLce6VolA7alPa5koMEMb
>
> Now try a full loop wire but be careful to keep the low Z part of the
> wire way above ground thus not wasting more power into the ground...
>
> Ground is a dummy load...
>
>
>
> On 8/30/2018 2:55 PM, Andy - KU4XR via 600MRG wrote:
> > Hi all:
> >
> > Thanks for all the replies to this thread. I'll start by saying:
> " If it IS grounded, and CAN Be connected to;
> > I have done so. This probably reasons out why I see no VSWR / RF
> Current changes even with 100 plus foot Radials...
> >
> > Back in 2009 when I plunged into my lowFER Beacon; I ran wires
> to literally - Everything Metal - I came to a point
> > where anything more, made no difference'es ( Diminishing Returns
> ).. My Mobile Home - frame, body, and now a metal roof;
> > are all connected to ground at both my 8 foot rod at the window,
> and the Utility ground... As to the radials on the ground;
> > several operators have said that " no changes were noticed at
> their end, but signals at distant receivers made a noticable
> > improvement "... With that empirical knowledge, I will run as
> much wire as I can get my hands on, in out of the way places
> > ( not my yard ), and " accept what happens " ...
> >
> > *** The area where I AM still seeing improvement *** - " Get as
> much wire as possible; as high in the air as possible... " :
> > I am still seeing noticable changes as I add Top Load wires to
> the set up.. On Wednesday ( 8-29-2018 ) , I added an extra
> > ( approximately ) 390 feet of Top Load which is now close to
> 1,230 feet total.. The 390 foot run is 3 wires with a perimeter wire
> > at 30' AGL - ran out over the 3 - 115 foot radials that I am
> experimenting with... Immediate changes were; a 7 turn reduction
> > needed for the loading coil.. My noise level dropped by 1-1/2
> S-units ( S-8.5 down to S-7 daytime level ).. I see a 2 milliAmp
> > increase in RF Current..
> >
> > ** This I have learned empirically ** - Never base any
> conclusions on a single night of operation...
> > Overnight WSPR receive operations reported 700 + mile stations
> coming in an hour earlier and stronger SNr numbers.
> > Distant reports of my signal were up also, and 3 west coast
> stations spotted me .. I am positive that the reduction
> > in solar activity had the most effect in the scenario .. More
> time will give better data.. Thanks for reading, and 73:
> >
> > Andy - KU4XR
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