[VHFcontesting] VHFcontesting Digest, Vol 236, Issue 1

[Les Rayburn]

Steve,

The hash between FM channels who are broadcasting in HD is indeed awful. It usually wipes out both the channel above and below the carrier frequency for DXing purposes. I have noticed that during powerful eskip openings, signals will sneak through. But overall, it really takes a lot of the fun out of the hobby. 


73,

Les Rayburn, N1LF
les at highnoonfilm.com <mailto:les at highnoonfilm.com>
121 Mayfair Park
Maylene, AL 35114
EM63nf

NRC & IRCA Courtesy Program Committee Chairman
Member WTFDA, MWC

Perseus SDR,  AirSpy + Discovery, SDRPlay RSP Duo, Sony XDR-F1HD [XDR Guy Modified], Korner 9.2 Antenna, FM-6 Antenna, Kitz Technologies KT-501 Pre-amps, Quantum Phaser, Wellbrook ALA1530 Loop, Wellbrook Flag, Clifton Labs Active Whip. 

“Nothing but blues and Elvis, and somebody else’s favorite song…” 

> On Aug 1, 2022, at 11:00 AM, vhfcontesting-request at contesting.com wrote:
> 
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> Today's Topics:
> 
>   1. Re: Antenna Manufacturing (Steven Rutledge)
>   2. US Antenna Manufacturer (Les Rayburn)
>   3. Meteor Scatter Contest - Perseids Peak (Francis Inman)
> 
> 
> ----------------------------------------------------------------------
> 
> Message: 1
> Date: Sun, 31 Jul 2022 11:36:25 -0500
> From: Steven Rutledge <crownhaven at bellsouth.net>
> To: vhfcontesting at contesting.com
> Subject: Re: [VHFcontesting] Antenna Manufacturing
> Message-ID: <67d859fa-35a8-6046-0637-87d264e6ec08 at bellsouth.net>
> Content-Type: text/plain; charset=UTF-8; format=flowed
> 
> I have found that the proliferation of multiple channels for many FM 
> broadcast stations creates hash between signals that deters DXing on the 
> band.? Not like the old days.? Aren't any of you noticing this?
> 
> Steve, N4JQQ, EM55bd
> 
> 
> 
> ------------------------------
> 
> Message: 2
> Date: Sun, 31 Jul 2022 20:08:23 -0500
> From: Les Rayburn <les at highnoonfilm.com>
> To: VHF Contesting Reflector <vhfcontesting at contesting.com>,
> 	"vhf at w6yx.stanford.edu" <vhf at w6yx.stanford.edu>
> Subject: [VHFcontesting] US Antenna Manufacturer
> Message-ID: <1251B4D4-316F-489E-A5F8-CB13BB108BDE at highnoonfilm.com>
> Content-Type: text/plain;	charset=utf-8
> 
> It is not my intention to hijack an email discussion intended for weak-signal VHF operating and contesting. 
> 
> Since the heylcon days of commercially-made FM antennas, the band itself has changed considerably. The FCC relaxed their rules to allow for a massive influx of LPFM stations, and then low powered translators. In most parts of the country now, ?clear? frequencies without a single local station are rare in the United States.
> 
> This places a premium on an antenna?s ability to separate stations, and maintain a high F/B ratio. 
> 
> The other change to the band is rising EMI noise levels. Switching power supplies, and other noise sources require much more care in the siteing of an antenna to avoid noise. Low-noise feed points such as the LFA would also be desireable. 
> 
> Ideally, I?d love to find a manufacturer to not only build a high-performance FM antenna, but also to revisit the design of antennas for this band. 
> 
> 
> 
> 
> 
> 73,
> 
> Les Rayburn, N1LF
> les at highnoonfilm.com <mailto:les at highnoonfilm.com>
> 121 Mayfair Park
> Maylene, AL 35114
> EM63nf
> 
> NRC & IRCA Courtesy Program Committee Chairman
> Member WTFDA, MWC
> 
> Perseus SDR,  AirSpy + Discovery, SDRPlay RSP Duo, Sony XDR-F1HD [XDR Guy Modified], Korner 9.2 Antenna, FM-6 Antenna, Kitz Technologies KT-501 Pre-amps, Quantum Phaser, Wellbrook ALA1530 Loop, Wellbrook Flag, Clifton Labs Active Whip. 
> 
> ?Nothing but blues and Elvis, and somebody else?s favorite song?? 
> 
> 
> 
> ------------------------------
> 
> Message: 3
> Date: Mon, 1 Aug 2022 09:24:20 -0500
> From: Francis Inman <francisinman at gmail.com>
> To: vhfcontesting at contesting.com
> Subject: [VHFcontesting] Meteor Scatter Contest - Perseids Peak
> Message-ID:
> 	<CAEaVPK8xymjEaWgeeGJ44x1Zu0583dCCoQzmNjKwghebdkFjYw at mail.gmail.com>
> Content-Type: text/plain; charset="UTF-8"
> 
> I have put together a meteor scatter event centered around the Perseids
> meteor shower peak. 50 Mhz, 144 MHz, and 222 MHz. Single op high power,
> single op low power, and rover. See details here >  VHF_NAMSS
> <https://kv5w.com/2022/07/23/north-american-meteor-scatter-sprint-digital/>
> 
> -Francis, KV5W
> 
> 
> ------------------------------
> 
> Subject: Digest Footer
> 
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> ------------------------------
> 
> End of VHFcontesting Digest, Vol 236, Issue 1
> *********************************************