Re: [IRCA] Western Superloop--Initial Trials

[Chuck Hutton <charlesh3@xxxxxxx>]

Les - 
The sites where you found info on the Superloop will also give you some ideas about performance. A Google will get you Bruce Conti's and Mark Connelly's documents.
Chuck

> Date: Thu, 2 Jul 2015 00:51:46 -0500
> From: les@xxxxxxxxxxxxxxxx
> To: am@xxxxxxxxxxx; irca@xxxxxxxxxxxxxxxx; abdx@xxxxxxxxxxxxxxx
> Subject: [IRCA] Western Superloop--Initial Trials
> 
> Finally found time to erect a Western facing Superloop. It's 24 X 7'. 
> I'm using a fixed 900 ohm termination, and feeding it with quad-shield 
> RG-6 coax. I installed three snap-on ferrite cores near on the feedline 
> near the antenna, and then again at about 40 feet down the coax, three 
> more just before it enters the shack. Total coax run is about 90 feet.
> 
> The antenna is quiet, very quiet--but signals levels are too low. I plan 
> to add a DX Engineering Receive Preamplifier DXE-RPA-1 when my budget 
> will allow. I'm going to send 12 VDC down the cable, and mount the 
> pre-amp in a weatherprooof box near the antenna.
> 
> http://www.dxengineering.com/parts/dxe-rpa-1
> 
> In terms of performance, I'm not sure what to expect. I tried a few 
> stations that were due East of me, such as WSB 750 in Atlanta. It was 
> weaker than on my other antennas, but not remarkably so. Listened for a 
> few of the Western powerhouse like KOA 850 in Denver, but nothing heard. 
> Not surprising, since KOA only appears a few times each winter.
> 
> I have a variable resistance unit as well that I can substitute for the 
> fixed termination. It's range is 900 to 1400 ohms. But then I'll have to 
> figure out how to adjust the null from across the back yard. I thought 
> about feeding the receiver audio into an FM transmitter and listening 
> outside on a portable. That might be my best option.
> 
> Can't seem to find much online about how to tune these things or gauge 
> performance. How does one know if it's working correctly?
> 
> Advice or suggestions most welcome!
> 
> 
> -- 
> 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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