[RTTY] Two Questions from a New Kid to the Group

[Ron DeBlock]

Hello, Marty.

I also have an IC-746Pro, but I run AFSK (USB-D mode) - I have never 
transmitted FSK with it.  I'm afraid I don't have any suggestions for 
your problem other than those already posted by others.

For the filters, I use 300, 500 and 1200.  For the narrow filter, I have 
  found that marginal signals decode better with 300 Hz instead of 250 
Hz.  I don't know why that is - possibly due to ringing with a 250 Hz 
filter, or maybe MMTTY just needs more of the sidebands for optimal 
decoding.  For the wide filter, when the band is very crowded, I will 
often change it to 1000 Hz.

Remember, you can use the Twin Pass Band Tuning at any time to make your 
filter presets narrower.

Good luck and 73!
-Ron KR2D


Marty Bluhm wrote:
> Good Evening.
> Looking through the archives and recognizing many calls that I've worked in
> contests, I feel I can ask these questions without getting laughed at too
> badly <lol>
> 
> First, I upgraded the station to a new IC746PRO which I'm running FSK to a
> Rigblaster Plus (properly configured for fsk - used with 850SAT and
> reconfigured for Icom)..
> 
> Problem 1 and driving me crazy - In the last NAQP RTTY test, in the
> beginning of the test running fsk, I could not work anybody, even Don. After
> a hour of climbing walls, I configured to afsk and the contacts started
> rolling. Since then and actually before the test, I made some rtty contacts
> with fsk. However, they have involved a considerable amount of work. I have
> checked the output by printing the 746 station onto the 850 rtty station. It
> prints good i.e. no inv fsk or ptt. With the heavy contest season starting
> shortly, I would like to put this behind me. Does anyone have any
> suggestions on possible problems/corrections?
> 
> The second request is not a problem. With the new 746Pro, I have the option
> of building filters. I have never been so blessed.  I know the 746 is
> similar to the 756Pro series. Can you recommend some filters to utlize in
> rtty contesting. In the NAQP, I was using 250 and 500 plus 2.2 for the
> normal filter. I can build 3 filters. Again, any suggestions would be
> greatly appreciated.
> 
> Thanks and I'll see yall in SARTG from WV.
> 73
> 
> 
> Marty
> W8AKS
> 
> 
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