Ed and Jim
Thank You very much for the specifics
As one that is still in the early building stage of my new antenna farm
in Texas I really appreciate the details you both just provided
The Spacing guideline is something I was in need of
I was considering 300 feet between my North and South Towers
and it sounds like I am on the right track with that
I am also building an 80m Rhombic on the back 24 acres of property
progress is slow, it won't be high but hopefully it will be an asset in
ARRL SS from North Texas
at least one person has told me the Rhombic is a waste of my time and I
should just use
Inverted Vee's at 60 feet of height
I have the Telephones poles installed now just need to find the time to get
the wire strung
tune it and run a thousand feet of ladder line to the back 24 acre lot from
the Shack
I currently have One Four Square installed for 40m
it is on The Eastern side of the property and Northern Half
I plan on the 80m Four square Due west of the 40m array
with a separation of 600 feet
The only other Current antenna in use for Transmit is an Eight element
Sterba Curtain Array
hung with broadsides to NE and SW hung between two, not quite high enough
telephone poles.
Bottom edge of the array would touch the ground but is propped up on
insulated posts
It seems to work rather well on 20m, but right now I have little to compare
it with
Anxious to get the real Aluminium up
all Mono banders, plus one Kt34xa
wish this stuff would hang itself
I am very pleased with my Current receive antennas
The 9el YCCC vertical RCV array and a switchable beverage NE/SW
The Beverage was just added, mainly so I could compare the YCCC performance
to something else
and will add a 3el Hi-Z to the mix before next Fall
Ed,
You mention 1/2 inch cable TV hardline and I have a spool of that but have
not seriously planned for it's use
did you do anything to reduce the impedance mismatch from 52 ohm line
I know it's not a lot of mis match, so maybe you just don't worry about it ?
I think Dave K1TTT, uses a lot of it and I think he just accepts the
mismatch, I could be wrong :)
Cheers!
Steve
KG5VK
http://www.KG5VK.com
My Ham Radio Friends
On Sun, Mar 19, 2017 at 11:50 AM, Ed Sawyer <sawyered@earthlink.net> wrote:
> Some of the SO2R operators run 2 radios on one band and I believe MOST of
> the mult-ops do.
>
>
>
> I do here at N1UR. I use cross polarization (transmit vertically on 160
> and
> listen horizontally - and transmit horizontally on the other bands and
> listen vertically). I also use tip to tip orientation and at least 300 ft
> separation. Using Low Power, I had pretty much the noise floor to within
> 20khz on all bands - 10khz on CW.
>
>
>
> With high power, the noise floor is lifted by probably 20dB across the band
> but otherwise everything is totally readable to about 20 - 25khz from the
> signal.
>
>
>
> I run the 2nd receive signal always through the aux receive port and
> through
> a front end protector.
>
>
>
> It takes good engineering and the space to place things in the right part
> and with separation. But its doable.
>
>
>
> Hopefully such required engineering practice doesn't get killed by the
> ability to operate remote receivers in the major contests. I was not happy
> when that option was given in the 160 CQ WW contests. A bad decision in my
> opinion.
>
>
>
> 73 N1UR
>
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>
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