On a side note WD-1A conductors are a copper/cadmium alloy; whatever that
means in RF resistance. Fine for a Beverage but what is the loss?
Carl
KM1H
----- Original Message -----
From: "Gary Smith" <Gary@ka1j.com>
To: <topband@contesting.com>
Sent: Thursday, July 25, 2013 1:22 AM
Subject: Re: Topband: Topband Inv-L Joy
Had a more difficult time getting the antenna up there this time. The
first spud snapped away from the fishing line & in the dense thicket
I was unable to find where it landed. Had to make another & the
mosquitos were so thick they posted a LUAU sign on my forehead.
Till I get something better I retrieved my WD-1A military field phone
wire that was left out in the marsh as my old beverage wire. and
after a comedy of errors I finally got the antenna up.
I was earlier getting a SWR of 1.1 on 160 before and now am getting
1.1 on 1.74365 MHZ
1.74365mhz
R=51 X= 6,7,8
swr 1.1
At the desired frequency to match the antenna I've aimed for 1.8MHZ
here's the information I was able to get at my desired frequency:
1.8025 mhZ
Coax loss 6.3db
C=4193 XC=21
L=1.970 X1=21
r=41 x=21 swr 1.6
So this is what the antenna is giving me at this moment. I need to
get back down and add the broken wire to the radial bed and I should
also trim some length to bring my values to 1.1 at 1.025MHz.
Given the info above from the MFJ 259B any idea how much I might
nibble off and more, is there anything in this info that tells me I
should look to do anything differently?
Hopefully the coax loss will be mitigated by a friend bringing me
350' of hardline. Can't wait!
Thanks,
Gary
KA1J
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