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Author Topic: ? about 40 meters cw  (Read 587 times)
AF4XK
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Posts: 96




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« on: February 14, 2005, 04:55:59 PM »

Hello,

I am getting back into cw after not being on the air in about a year. At nights I have noticed lately the range 7026-7060 (or so) seems to have data communications as opposed to cw. It does not seem like foreign broadcast interference but packet or such. Has anything changed in this freq range/mode lately or am I imagining this?

thanks and 73.

chuck af4xk
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N8UZE
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Posts: 1524




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« Reply #1 on: February 14, 2005, 06:31:27 PM »

Quite possibly RTTY.
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N0IU
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Posts: 1293


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« Reply #2 on: February 15, 2005, 05:41:11 AM »

It is RTTY. You will find a lot of DX RTTY in this portion of the band while most stateside RTTY is still usually found from about 7.080 up to about 7.100. I have operated in RTTY contests in that lower portion of 40 meters, so I am certainly not complaining about it. It is generally not too much of an issue, but when there is a RTTY contest in which I chose not to participate, that's when I QSY up to 30 meters if I just have to have that CW fix!

NØIU
 
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W5ESE
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Posts: 550


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« Reply #3 on: February 15, 2005, 06:53:58 AM »

February 12 and 13th was the 'CQ WW RTTY WPX
Contest'.As soon as the contest ended (2400Z
Feb 13), the band (40m) went back to "normal".

Another one is coming up February 26 and 27;
North American QSO Party, RTTY, from the
National Contest Journal.
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AF4XK
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Posts: 96




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« Reply #4 on: February 15, 2005, 09:23:29 AM »

Thanks for the info.

Quick follow up question.

Do most RTTY operators these days use the old teletype equipment, modern printers with a RTTY  interface,  or just display on a computer screen?

thanks again.
chuck
af4xk  
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W5ESE
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« Reply #5 on: February 15, 2005, 06:16:17 PM »

I don't know; I'm just an annoyed CW operator
like yourself.

I suspect that most use Personal Computers with
soundcards for RTTY.

73
scott
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N0IU
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Posts: 1293


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« Reply #6 on: February 16, 2005, 02:59:10 AM »

Do most RTTY operators these days use the old teletype equipment, modern printers with a RTTY interface, or just display on a computer screen?

Chuck,

There are still a few die-hards out there that use mechanical teletype machines, but for all intents and purposes, it is all being done on a computer now-a-days. There are basically 2 ways to do RTTY:

1) Use a multi-mode controller. This can either be an outboard unit (like one of the Kantronics units) or a card installed in the computer (like one of the HAL units).

2) Use a sound card and software like MMTTY. The program is free and according to most, will outcopy many outboard controllers. You will need to use some sort of interface between the computer and radio. Simple schematics come with MMTTY or you can buy one of the Rig Blaster type interface units.

MMTTY:
http://mmhamsoft.ham-radio.ch/mmtty/

Rig Blaster Interface:
http://www.westmountainradio.com/RIGblaster.htm

Good luck!
NØIU
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