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Author Topic: How Does "One Work a RTTY Pileup  (Read 1561 times)
AA6VB
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Posts: 8




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« on: November 15, 2009, 07:09:04 PM »

I have been an active dxer for many years but need some advice as to how to work a DX pile up on rtty.  

Do the same techniques used on cw work?  Do you simply pick a clear spot and send over and over while the dx is listening, or do you try to find the last station he worked and send there, etc?

Thanks in advance for any help.

73,

Bob/AA6VB
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AA6YQ
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Posts: 1594


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« Reply #1 on: November 16, 2009, 12:38:22 AM »

Two CW signals that are close but not identical in frequency can be distinguished by a good CW op. If two RTTY signals are close but not identical in frequency, a RTTY decoder will produce gibberish unless one signal is significantly stronger than the other. This puts a higher premium on "being in the clear" when calling in a RTTY pileup, unless propagation favors you over most of the pileup and you have a competitive station (e.g. you're in Southern California trying to work TX3A with a beam and an amplifier).

However, you can't just call anywhere -- you need to understand range of frequencies that the DX station is scanning, and find clear spots within this range from which to call. A spectrum scope or panoramic tuning display makes this easier, though large pileups may exceed the range of the latter of the latter mechanism.

   73,

       Dave, AA6YQ (326 confirmed on RTTY)
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G0RIF
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Posts: 129




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« Reply #2 on: November 16, 2009, 01:52:07 AM »

I agree 100% with all Dave wrote.

I'll add to that that. In a busy pile-up it's well worth just spending a while monitoring the range of frequencies where the DX is (or might be) listening. This gives you a better chance of dropping your call into a clear frequency.

Also, I have seen it written by a well respected DXer that he suggests you avoid trying to find the last used frequency on the basis that's what many others will be doing, resulting in a flood of calls all on top of each other with no chance of the DX being able to pick one out. Spreading out seems to be preferred.

And lastly, I'd suggest a delayed call every now & then...just to try and give your signal a shot at some 'clear air' once the general hubbub subsides. Worth a shot.

Good luck,
Dean - G0RIF
http://blog.dean-barnes.com/

 -- A recent RTTY convert with 107 confirmed
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KB9CRY
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« Reply #3 on: November 16, 2009, 12:50:16 PM »

Depends on the pileups.  Both methods work.
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AA6VB
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Posts: 8




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« Reply #4 on: November 17, 2009, 09:33:31 PM »

Thanks to all who replied. The information is just what I needed.  

73 es good dx,

Bob/AA6VB
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