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

[neilkaz <neilkaz@xxxxxxxxxxxxx>]

For me, this is outside the AM band and won't count as a new AM stn. Just my opinion.  73 KAZ

-----Original Message-----
>From: Les Rayburn <les@xxxxxxxxxxxxxxxx>
>Sent: Oct 15, 2014 8:29 PM
>To: irca@xxxxxxxxxxxxxxxx
>Subject: Re: [IRCA] [ABDX] WH2XDE digital tests imminent circa 1750 kHz
>
>I hate to rain on the parade, but does this even qualify as broadcast 
>band DX? I mean it's at 1750 KHz, well outside the band, and seems to 
>have little to do with broadcast
>technology---except perhaps another "pie in the sky" idea about how 
>digital modulation is going to save AM radio.
>
>Forget about the 100+ million installed user base of analog radios, and 
>the fact that the market is moving towards on-demand audio content 
>delivery services like Pandora, and away from broadcasting, period.
>
>Hard to get excited about logging this one.
>
>--
>73,
>
>Les Rayburn, N1LF
>121 Mayfair Park
>Maylene, AL 35114
>EM63nf
>
>6M VUCC #1712
>AMSAT #38965
>Grid Bandits #222
>Southeastern VHF Society
>Central States VHF Society Life Member
>Six Club #2484
>
>Active on 6 Meters thru 1296, 10GHz & Light
>
>
>
>
>
>On 10/15/2014 6:42 PM, Tim Tromp 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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