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Author Topic: CY9M Pileup, over the limit on split  (Read 2738 times)
K4HXC2
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Posts: 51




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« on: July 30, 2012, 01:54:03 PM »

Darnedest thing I ever saw, they were lined up on the waterfall like fence posts trying to be heard. The entire 20m RTTY segment CONSUMED by operators trying to get through to CY9M. I couldn't hear him (not real sure where he actually was, maybe 14083.6) as a result the band was not usable for anything else. I think this is an example of why operating split has to have some kind of limit, maybe 2khz.  Replies ?
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Dennis, WK1A
Formally K4DAZ
In honor of Dad, K4HXC(sk)
KG6MZS
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« Reply #1 on: July 30, 2012, 02:54:16 PM »

I don't think this kind of thing happens often enough to warrant any governmental regulation.

For my part I'm ebullient when it does happen!
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K4HXC2
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« Reply #2 on: July 30, 2012, 03:03:30 PM »

I was thinking more in terms of voluntary limits, certainly, I agree no more government!
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Dennis, WK1A
Formally K4DAZ
In honor of Dad, K4HXC(sk)
KG6MZS
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« Reply #3 on: July 30, 2012, 03:07:38 PM »

Voluntary?  In a feeding frenzy?  good luck with that ;-)
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K4HXC2
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« Reply #4 on: July 30, 2012, 03:15:03 PM »

If they had said UP UP 1 to 2 khz. They consumed from 80 thru 95. There was no way they were actually listening over that much bandwidth.
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Dennis, WK1A
Formally K4DAZ
In honor of Dad, K4HXC(sk)
N8HM
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« Reply #5 on: July 30, 2012, 03:15:35 PM »

You can transmit RTTY all the way up to 14150 (and I've made a RTTY QSO as high up as 14140). Are you saying that the CY9M pileup was going all the way up to 14150?
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K4HXC2
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« Reply #6 on: July 30, 2012, 03:16:54 PM »

It was going up to 14095.. A lot of space!
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Dennis, WK1A
Formally K4DAZ
In honor of Dad, K4HXC(sk)
N8HM
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« Reply #7 on: July 30, 2012, 03:19:52 PM »

It was going up to 14095.. A lot of space!

Yes, and I'm sure that entire space was packed with signals. RTTY doesn't decode well when signals are transmitted right on top of each other. A big pileup needs lots of separation or else no one is going to get through.

80-95 is 15 kHz. That's one tenth of the 20m band that's available for RTTY use in the United States.
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K4HXC2
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« Reply #8 on: July 30, 2012, 04:01:37 PM »

Technically correct, However if you want to CQ you probably need to be between 14080 and 14099, otherwise you'll be CQing for a long while. Don't you think that if you're just cruising for contacts that'll generally be where you go?
15 Khz SEEMS like too much of the usable band, IMHO it's a bit much. But, having said that, a previous poster pointed out it is very rare, and I suppose he's right.

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Dennis, WK1A
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In honor of Dad, K4HXC(sk)
W5DQ
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« Reply #9 on: July 31, 2012, 01:01:27 PM »

Technically correct, However if you want to CQ you probably need to be between 14080 and 14099, otherwise you'll be CQing for a long while. Don't you think that if you're just cruising for contacts that'll generally be where you go?
15 Khz SEEMS like too much of the usable band, IMHO it's a bit much. But, having said that, a previous poster pointed out it is very rare, and I suppose he's right.



While you have every right ot use the band as much as the next guy, trying to call CQ in the midst of that sort of wild operating is asking for dismal results. Yes I agree sometimes the response to a ATNO can be a bit overwhelming, especially on RTTY when there are alot of takers, but like was mentioned it only happens ever so often so the best advice would be to ride it out or switch bands. The 20M RTTY segment should be back to normal very soon (or at least for a while till the next ATNO shows up Smiley )

Gene W5DQ
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Gene W5DQ
Ridgecrest, CA - DM15dp
www.radioroom.org
N7SMI
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« Reply #10 on: July 31, 2012, 03:04:33 PM »

I heard several other RTTY QSOs going on amidst the CY9M pileup (though unfortunately I couldn't copy CY9M). It didn't seem to bother them at all. But I agree that it was a pretty wide pile-up. It's really the DXs responsibility to outline the area he'll be monitoring - simply indicating "UP" opens up the possibility for such wide pileups.

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