Hi Gary
If you chat with the guys that run WSPR, they all use receiving loops of
some type for 80 and 160. From 14-28Mhz, you can use many choices as you
are not trying to get rid of atmospheric noises.
Mike va3mw
On Sat, Dec 21, 2013 at 3:18 PM, GARY HUBER <glhuber@msn.com> wrote:
> Dave,
>
> I have NOT played with the magnetic loop. I live in a rural subdivision
> on a one acre lot so I have some room for antennas but little desire for
> more than a tri-bander (TH-7) at 50 feet, a top loaded HF-2V with 160M-mod
> kit and seasonally the K9AY loop system. I've had a TH-7 and HF-2V up at
> this location for over twenty-six years (both replaced with a new version
> or repaired at least once) and they have taken my DXCC total from 130 or so
> when we moved here to 347. This location is electrically quiet; for example
> the 20 meter noise floor near 14070 is -125 dBm at the moment. At times
> connecting an antenna to the Flex-1500 increases the NF only by 6 dB
> greater than an when on a dummy load.
>
> When I move to town due to age or medical condition, if I can still play
> radio, I probably will try a magnetic loop, a HEX beam, and another HF-2V
> if there's room. The one thing I have NOT mentioned and something to
> consider is the required separation between the TX antenna and the K9AY
> Loop System.... I think its 100 feet if you operate QRO, but you should
> read the documentation to avoid damage to the pre-amp or your receiver. As
> my FLEX-1500 is operated as receive only and as the sub-receiver of an
> OMNI-VII and Titan-425 station, I made sure I had more than the minimum
> distance and put a RF limiter in the RX line. YMMV...
>
>
> 73 ES DX,
> Gary -- AB9M
>
> -----Original Message----- From: David Movius
> Sent: Saturday, December 21, 2013 12:52 PM
> To: 'GARY HUBER'
> Subject: RE: [Flexradio] Receiving antennas
>
> Gary --
>
> Thanks for the input. Am reading up on the loop system. Do you have any
> reflections or thoughts on the magnetic loop (e.g., Pixel)? Saw it
> demonstrated at Visalia and Dayton last spring and the signal:noise ratio
> improvement was impressive at the broadcast band frequencies. Am wondering
> about 14-28 Mhz. range.
>
> So far, only positive comments are coming for the K9AY loop system. No
> comments yet on magnetic loop system.
>
> Vy 73,
>
> Dave W7IWW
>
>
> -----Original Message-----
> From: FlexRadio [mailto:flexradio-bounces@flex-radio.biz] On Behalf Of
> GARY
> HUBER
> Sent: Saturday, December 21, 2013 11:30 AM
> To: FlexRadio Reflector
> Subject: Re: [Flexradio] Receiving antennas
>
> You may notice significant reduction in signal strength when using the K9AY
> Loop System. You will also notice a significant improvement in the signal
> to
> noise ratio. I have found that DX signals which are marginal copy on the TX
> antenna ( a vertical ) are solid copy on the K9AY Loop System. The K9AY
> Loop System is a great 160-80-40 solution IF you cannot install a 400 foot
> or longer Beverage.....
>
> 73 ES DX,
> Gary -- AB9M
>
> -----Original Message-----
> From: paim
> Sent: Saturday, December 21, 2013 11:39 AM
> To: David Movius ; FlexRadio@flex-radio.biz
> Subject: Re: [Flexradio] Receiving antennas
>
> http://www.hard-core-dx.com/nordicdx/antenna/loop/k9ay/k9ay_orig.pdf
>
> i use it and it is the best
>
> vy 73
> E.P g0uut
>
>
>
>
>
>
> ________________________________
> From: David Movius <dave.movius@gmail.com>
> To: FlexRadio@flex-radio.biz
> Sent: Saturday, 21 December 2013, 17:37
> Subject: [Flexradio] Receiving antennas
>
>
> Interested in hearing about experiences with various receiving antennas
> useful for input to Flex 6000 series radios (monitoring various band
> slices)
> that are effective up to 30 Mhz, and possible 6 meters.
>
>
>
> 1. Magnetic Loop - better mounted low, or at top of tower, or
> doesn't
> matter?
>
> 2. Wire arrays?
>
>
>
> Dave W7IWW
>
> _______________________________________________
> FlexRadio Systems Mailing List
> FlexRadio@flex-radio.biz
> http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz
> Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/
> Knowledge Base: http://kc.flexradio.com/ Homepage:
> http://www.flexradio.com/
> _______________________________________________
> FlexRadio Systems Mailing List
> FlexRadio@flex-radio.biz
> http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz
> Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/
> Knowledge Base: http://kc.flexradio.com/ Homepage:
> http://www.flexradio.com/
>
>
> _______________________________________________
> FlexRadio Systems Mailing List
> FlexRadio@flex-radio.biz
> http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz
> Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/
> Knowledge Base: http://kc.flexradio.com/ Homepage:
> http://www.flexradio.com/
> -----
> No virus found in this message.
> Checked by AVG - www.avg.com
> Version: 2014.0.4259 / Virus Database: 3658/6914 - Release Date: 12/12/13
> Internal Virus Database is out of date.
>
>
>
> _______________________________________________
> FlexRadio Systems Mailing List
> FlexRadio@flex-radio.biz
> http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz
> Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/
> Knowledge Base: http://kc.flexradio.com/ Homepage:
> http://www.flexradio.com/
>
_______________________________________________
TenTec mailing list
TenTec@contesting.com
http://lists.contesting.com/mailman/listinfo/tentec
|