Re: [IRCA] [ABDX] WH2XDE digital tests imminent circa 1750 kHz

[Niel Wolfish <nielwolf@xxxxxxxx>]

Heard same thing as Tim at 0005 UTC (Oct 16 2014) in Toronto, Ontario.

Niel Wolfish


On Wednesday, October 15, 2014 11:42 PM, Tim Tromp <kilokat7@xxxxxxxxx> wrote:
 


2332 UTC: AM carrier noted right now on 1750 kHz with some test tones 
and brief modulated CW heard.

73,
Tim Tromp
West Michigan


On 10/15/2014 02:40 PM, Glenn Hauser wghauser@xxxxxxxxx [ABDX] wrote:
>
> ** U S A. Experimental station WH2XDE will start testing next week
> (October 13). Tests will be in digital audio modes which will be
> announced before each transmission in AM with descriptions of the
> particular mode and how to demodulate it. Private monitor points have
> been set up but SWL and Amateur reports are welcome [wh2xde @
> gmail.com]. The first few days may involve only carrier and CW IDâs
> however to allow for transmitter/antenna adjustment.
>
> Start Time: 0000 UT (later times may be added if needed due to
> propagation)
> Duration: 2 hours approx.
> Frequency: 1750 kHz
> Power level: 1 kW (AM carrier); Digital 1-5 kW
> Transmitter Location: New York (WH2XDE-1)
> Antenna: Loaded vertical (less than 1/4wave) or a full wave horizontal
> loop
> Transmitter: Armstrong X1000B
> (Jerry Whitney, Kestrel Electronic Design, Oct 9, DX LISTENING DIGEST)
>
> Jerry, Tnx for the info. Please keep me informed about further
> developments. I assume reports may be sent to this e-mail address? Is
> there a postal address? Is there a website for more info? 73, (Glenn
> Hauser, to Jerry via DXLD)
>
> Glenn, Thanks for your interest. Yes, reports can be sent to this
> email address. The postal address is: Jerry Whitney, WH2XDE, 2083
> Stirnie Rd., Victor NY 14564.
>
> I will mail (USPS) out a QSL card to anyone who requests one (no SASE
> needed). The QSL shows a picture of the rather large 1 wavelength
> horizontal loop and ATU. No website, I can email site pictures etc. to
> anyone who is interested however.
>
> The digital voice modes currently are a work in progress. Very
> disappointing! Static crashes, selective fading and the transmitter
> requirements are frustrating. (10db of headroom is needed on the
> transmitter for peak power output; a 500 watt transmitter needs 5 kW
> peak to properly modulate!) The solution may be in the receiver. The
> primary digital mode will likely be DRM with the new low latency
> compression scheme. I will operate some of the ham modes (FreeDV)
> also.
>
> If there is enough response from listening stations I will probably
> setup a website with transmission schedules, pictures etc. I'll keep
> you updated. Try Wednesday 10/15 at 0000 UT and beyond. It should be
> fully operational then.
>
> I forgot to ask you if you had any thoughts on the frequency of
> operation. The plan was to use 1750 kHz but the license allows 1720-
> 1800. The band segment in this part of the US is quiet with only a few
> very weak 9 kHz spaced stations from Europe when propagation is
> exceptional. Thanks 73 (Jerry Whitney, DX LISTENING DIGEST)
>
> Jerry, I checked the 1711-1800 range a few times last night, and hear
> nothing but some weak carriers, maybe out of local devices. 1750
> itself seems quite clear. Are you referring to AM broadcasters from
> Europe? Must be pirates, but most of them are below 1700, as licensed
> broadcasting there still stops at 1602, and I would not expect them to
> stick to 9-kHz spacing.
>
> What kind of programming will there be? What is your ultimate
> objective after these tests? (Glenn to Jerry, via DXLD)
>
> Glenn, Thanks for your input. I'll stick to 1750 for now. I ran some 
> antenna tests this weekend and wasn't happy with the antenna bandwidth 
> so more work will be needed. This will delay the startup for perhaps a 
> week. I will email you when it`s ready.
>
> Not much thought on programming yet, still some technical details to 
> work on. I suppose I could transmit "World of Radio" on AM if I had 
> permission!
>
> As you likely know, there are some clever new "digital data" methods 
> developed in the last few years by some of the telecom companies or 
> their licensed partners. These digital data streams are very 
> impressive but require a robust connection. I'm working on several of 
> the licensed data systems and trying to "adapt" them to medium wave 
> broadcast. I'm most interested in what happens after the transmitter. 
> The digital magic is done by people much smarter than I. 73 (Jerry 
> Whitney, WH2XDE, Oct 13, DX LISTENING DIGEST)
>
> Glenn, Antenna looks good so I will start tests tonight (Wednesday at 
> 2345 UT) carrier and MCW at 1000 watts. Frequency between 1730 and 
> 1760. 73 (Jerry Whitney, Oct 15, DX LISTENING DIGEST)
>
> Googled the calls to see if it's real (yes) and look at these pages on 
> the below link. A couple of entries in the lower bands through SW for 
> other mostly digital noise experiments, too:
> http://www.fcc.gov/document/experimental-grants-4114-43014
> (Terry L Krueger, FL, DX LISTENING DIGEST) i.e. on third page of four:
>
> KESTREL ELECTRONIC DESIGN LLC
> 0167-EX-PL-2014
> WH2XDE
>
> New experimental to operate in 1.72-1.8 MHz for testing the next 
> generation of digital audio transmission over radio
> Fixed: Victor (Ontario), NY; Penn Yan (Yates), NY (via DXLD)
>

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