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Re: [IRCA] Western Superloop--Initial Trials
- Subject: Re: [IRCA] Western Superloop--Initial Trials
- From: Les Rayburn <les@xxxxxxxxxxxxxxxx>
- Date: Thu, 02 Jul 2015 12:14:23 -0500
- Delivered-to: archive@xxxxxxxxxxxxxxxxxxxx
- Delivered-to: irca@xxxxxxxxxxxxxxxx
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I should have provided more details. I'm using a commercially made 16:1
transformer to feed the antenna at one corner. The other end has a 900
ohm non-reactive, fixed termination, also commercially made. Feeding the
antenna with 75 ohm RG-6 coax. I also have a variable termination that
is 900 ohms to 1400 ohms, non-reactive.
Someone suggested Googling more information about how to best tune the
Superloop, using Bruce Conti and Mark Connelly as search terms. While I
can find a lot about the construction of the loops, including a version
with remote variable resistance, I don't see much about how to maximize
performance.
The most helpful suggestion was to do an SDR recording of the antenna
without the termination in place, then another with the termination
installed. That's a great idea--which I'll work on now. I need to
assemble a target list of daytime stations that are to my East and West
to use to compare.
Some questions:
1.) I assumed, perhaps incorrectly that the difference between 75 ohm
coax and 50 ohm coax wouldn't amount to much. Am I wrong?
2.) Would the Wellbrook FLG100LN-2 be a better option than the DX
Engineering pre-amp?
http://www.loop-antennas.com/Components/FLG100LN-2
Thanks for the advice!
--
73,
Les Rayburn, N1LF
Maylene, AL
EM63
Member WTFDA, NRC, IRCA, & Medium Wave DX Circle
Former CPC Chairman for NRC/IRCA
============================== FM DX
Sony XDR-F1HD, Sangean HDT-1, Elad FDM-S2, AirSpy.
Denon TU-1500RD w/Ray Dees RDS Decoder,
FM6 Antenna with CM7777 Mast Pre-Amp, RG-11.
"Nothing but blues and Elvis and somebody else's
favorite song..."
AM DX
Elad FDM-S2, Wellbrook ALA1530+ Loop, Clifton Labs Active
Whip, Superloop. Quantum Phaser, Kiwa Loop, Palstar MW Pre-Selector
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