[MRCA] NVIS antenna for Gilbert

[Rich]

Just a " Heads Up " for the guys at Gilbert this comming weekend. I will be 
offering forsale a " SUPER NICE " GRC-9 Forsale with a " NOS " Super Rare 
GRC-9 ( A/C ) Power Supply and spare parts kit. Also other GRC-9 stuff.
W2OBR ( oldbuzzardrich )
----- Original Message ----- 
From: <ersmar at comcast.net>
To: <robandpj at earthlink.net>; "Military Radio Collectors Association" 
<mrca at mailman.qth.net>; "Military Radio Collectors Association" 
<mrca at mailman.qth.net>
Sent: Monday, September 18, 2006 7:32 PM
Subject: RE: [MRCA] NVIS antenna for Gilbert


> Rob:
>
>     I just recall having a heck of a time hearing anybody on 3885 from 
> back at base whle I was up on the mountain last year.  I'm anxious to see 
> (hear?) how things go this year.
>
>
> Al:
>
>     Will you be bringing your AS-2259 with the base?  If so, I'll have my 
> MFJ tuner with long-wire output and a ground lug (and a dummy load).  You 
> could put that in line between  your GRC-9 and the antenna to see if some 
> sort of matching circuit is needed for better performance.
>
> 73 de
> Gene Smar  AD3F
>
>
> -------------- Original message ----------------------
> From: "Robert Flory" <robandpj at earthlink.net>
>>  Gene wrote:
>>
>>  One other thing:  As I wrote last year, we might have trouble with
>> > skywave/NVIS propagation on 80M during mid-afternoon on Friday and
>> > mid-morning on Saturday.  D-layer absorption will be a bear at those
>> times.
>> > What we really need for 80M is a good ground-wave launching antenna for
>> > 3.885.  Maybe a full-wave, terminated delta loop pointed at the
>> mountaintop
>> > field site.  But that's for next year.
>>
>> It is only 12 miles to the mountain.  I had no trouble working the 
>> mountain
>> with 3 watts and a 24-foot vertical.  NVIS propagation mode not necessary
>> at that distance.
>>
>> Rob Flory
>> robandpj at earthlink.net
>> www.home.earthlink.net/~navyradio  WWII Navy Radio
>> www.home.earthlink.net/~robandpj    Les Flory Television and Electronics
>>
>>
>> > [Original Message]
>> > From: <ersmar at comcast.net>
>> > To: <mrca at mailman.qth.net>
>> > Date: 9/17/2006 8:06:57 PM
>> > Subject: [MRCA] NVIS antenna for Gilbert
>> >
>> > Gents:
>> >
>> >      I tried out the 80M wires of my NVIS inverted V system this
>> afternoon.
>> > I erected the thing in my ENTIRE front yard, spanning from one street
>> corner
>> > (I"m on a corner lot) to the fence around my back yard, across the 
>> > front
>> of
>> > the house.  I used dacron guys for the other two legs.
>> >
>> >      After a bit of trimming, the final wire lengths were 59 feet each.
>> SWR
>> > BW (2:1) was about 90 kHz, centered on 3.850 MHz.  I had to use a 
>> > couple
>> of
>> > additional fiberglass mast sections underneath the plastic chain that I
>> use
>> > as end insulators to raise the wire ends farther off the ground.  I 
>> > think
>> > Dale or Rob suggested I do that anyway for RF safety.
>> >
>> >      At around 4-5 PM today from my Rockville, MD home (a bit north of
>> DC) I
>> > was able to work into PA (57) and throughout VA (59 - 59+10) with 80 W
>> > output (my TS-570 was on battery power) on the high end of 80M.
>> >
>> >      I haven't tried the antenna with both 40 and 80M wire sets 
>> > installed
>> > simultaneously; guess that will have to wait until Gilbert.  If we have
>> to
>> > save space, I can erect the mast as I did today - only the 80M wires.
>> It'll
>> > still be a long antenna system that we'll have to fit in somewhere.
>> >
>> >      One other thing:  As I wrote last year, we might have trouble with
>> > skywave/NVIS propagation on 80M during mid-afternoon on Friday and
>> > mid-morning on Saturday.  D-layer absorption will be a bear at those
>> times.
>> > What we really need for 80M is a good ground-wave launching antenna for
>> > 3.885.  Maybe a full-wave, terminated delta loop pointed at the
>> mountaintop
>> > field site.  But that's for next year.
>> >
>> >
>> > BCNU es 73 de
>> > Gene Smar  AD3F
>> > P.S  Anybody have the 4-pin MALE DC power connector for my AM-65 amp's
>> power
>> > cable?  The only place these things were found in gummit equpment was 
>> > on
>> the
>> > M-300 mounting base for the AM-65/RT-70 combo.
>> >
>> >
>> > _______________________________________________
>> > MRCA mailing list
>> > MRCA at mailman.qth.net
>> > http://mailman.qth.net/mailman/listinfo/mrca
>>
>>
>>
>> _______________________________________________
>> MRCA mailing list
>> MRCA at mailman.qth.net
>> http://mailman.qth.net/mailman/listinfo/mrca
>
>
> _______________________________________________
> MRCA mailing list
> MRCA at mailman.qth.net
> http://mailman.qth.net/mailman/listinfo/mrca
>