[RTTY] Really

k3mm at verizon.net k3mm at verizon.net
Sun Jan 31 17:10:01 PST 2010


>> In ur #3, there is logic to support the use of dashes between the numbers...it usually eliminates a Figures shift character before each "001", so in theory it's quicker.  When using advanced front-ends such as RITTY, repeated character patterns are used to make an educated guess as to the correct number when errors are received and it doesnt matter whether you use dashes or space+Figures...it will figure it out, so shorter is better.  However, I've found that most operators do not have this kind of sophistication and have a hard time even translating "QWERTYUIOP" into "1234567890" when the Shift character is missed or garbled.  So I've pretty much given up on using the dashes and put up with the slower space+Figures sequence.

3:  Use spaces to seperate your numbers, ex: 599 001 001
    There is no real reason to use hyphens. Do not use
    periods, commas, slant bars. In RTTY it is preferable
    to send the 3 digits, it's easier to click on 001 than 1.
    In normal conditions the exchange is sent twice but the
    RST only once. In poor conditions exchange may be sent
    3 times,  ex: 599 001 001 001 
    Do not add more spaces between words to make line longer.
   
>>  In the following example, you want to confirm with "Hiscall" TU "Urcall" CQ or just "Hiscall" TU .   If you send TU first, whoever it is that thinks they worked you will be gone, so it's a waste of time to send their call at that point.

7:  If you are in RUN-CQ mode, reply with (Hiscall) exch.(Hiscall)
    If there are many callers, QRM, it is important to confirm to 
    whom you have sent the exchange. ex: Hiscall 599 001 001 Hiscall
    Then, confirm with (TU Hiscall de URCALL CQ)   to continue.
 
>> Wouldnt it be great if we could get everyone to follow # 8 part one??  



8:  In S&P mode never send your exchange to the CQ'ing station
    until he has acknowledged your call and sent his exchange first!

>> This next part is only correct if your call is not busted.  If he gets the call wrong, you have the option of just sending your call again if it's highly questionable, or sending your call again a couple of times and then the exchange if you are sure it was for you.  Then it is up to the RUN station to acknowledge your correct call before he moves on.  If he doesnt, you must call him again until he acknowledges your correct call.  Otherwise, you will lose not only that QSO but another 1 or 2 in points during log checking.

    Dont send hiscall but only yours,  ex: DE CALL CALL
    then reply with only your exchange, ex:  TU 599 002 002
    (TU say it all, QSL, TU, 73)  Again, the DE is optional.

>> ...and wouldnt it be great if we could everyone to use the actual Mark frequency as the spot/pass frequency, rather than reading their LSB or USB dial?

>>  ...and one more tip about running AFSK:  Please use only "high tones" and 170hz shift.  The standard Mark tone is 2125 hz.  The center of your passband should be 2210 hz.  If you use low tones, you run the risk of transmitting audio harmonics since they will end up within your transmit passband.  Help keep the bands clean by keeping your tones high in the passband and watching your mic and ALC levels.  Also note that a lot of the radio-based FSK is actually AFSK in disguise, so it is not immune.  Sure, run AFC and NET while S&P, but tune for high tones so your tones will also be high on the return.

73, Ty K3MM
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