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Author Topic: Getting started with digital modes  (Read 2424 times)
WA7DET
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Posts: 14




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« on: April 30, 2007, 11:50:00 AM »

I just received my SignaLinkUSB interface and plan on getting into digital modes. I need to know the best way to get started, i.e. which software, what modes are best and what are the standard frequencies for these modes. I've been licensed since 1965 and have worked with computer since 1969 so I should be able to figure the system out with some starting pointers.
Once I get things working listen for A61TS on the HF bands.

Thanks,
Tom
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KG4RUL
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Posts: 3354


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« Reply #1 on: April 30, 2007, 01:58:08 PM »

Here is a chart of Common HF Digital Frequencies in PDF Format: http://home.comcast.net/~dzabawa/COMHFDIGIFREQS.pdf

I regularly use my TS2000X on digital modes almost to the exclusion of voice modes on HF.

Dennis KG4RUL
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KE4DRN
Member

Posts: 3746




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« Reply #2 on: April 30, 2007, 02:56:58 PM »

hi tom,

no cost software

psk31 http://www.digipan.net/

sstv  http://mmhamsoft.amateur-radio.ca/

psk31 http://hrd.ham-radio.ch/psk31deluxe.html
(no cost, control your radio too)

if you like to control the radio with the pc,
MixW can do that, you can try it before you purchase it

http://www.mixw.net/


73 james


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VA7CPC
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Posts: 2831




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« Reply #3 on: May 01, 2007, 07:09:40 PM »

"HamScope" supports a wide selection of digital modes, including PSK31 and RTTY.

"MMTTY" is a common kernel for many RTTY programs -- it's free.  RTTY has lots of variants, and can be tricky to set up (for the first time).

Take a look at:

http://www.rttycontesting.com/tutorials/tutorials.htm

for suggestions.

RTTY and PSK31 are, by far, the most-common modes.   An RTTY contest brings out dozens of high-power, big-antenna stations -- lots of opportunity for new countries for low-power ops like me.

   Charles
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WQ3T
Member

Posts: 209




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« Reply #4 on: May 04, 2007, 08:17:11 AM »

You have a very nice interface. It helps to tell us the kind of radio and computer you have. For instance, the connection for an ICOM IC-746PRO is piece of cake, but Yaesu FT-847 is more work. Your software options open up if you use Windows XP. Windows 98 limits you to some less-powerful software. Might as well forget about a mac. Frequencies you should start with are 7070 and 14070. Put the rig on Upper Sideband SSB for all HF bands using digital. If using the ICOM, hold in the SSB button until "D" appears next to USB. This moves your filter's center frequency to 1.5 KHz for optimum digital. The farther away from 1.5KHz you go, the wider filter you must use, and more noise you introduce to the rig. Digital communications operate in the audio region, so make sure you have the audio frequency scale in use on the software. If you have Windows XP, the best software I have found is Ham Radio Deluxe. Many folks say it's the best software at any price, best part is the software is free. Hamscope is also very good, and hamscope will do CW while most others wont. You got Hamscope free on the CD that came with your interface. Ham Radio Deluxe needs to be downloaded. You should also use the computer to rig controlling cable for Ham Radio Deluxe to work best. That's the cable used to change radio frequencies using the computer. You should use Hamscope instead of Ham Radio Deluxe if you don't want to control the rig with the computer. Give us more information about the equipment you are using, and we can provide more help.
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WA7DET
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Posts: 14




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« Reply #5 on: May 04, 2007, 09:43:27 AM »

Thanks to all for the info. So far I've made 7 BPSK31 contacts on 20m so I guess I've got the thing working. It's going to take practice to learn all the ins and outs of good operations but at least I'm on the air.
To answer some of the questions: I'm using a Kenwood TS-570DG into a vertical antenna. Not the best but it's about the only thing I can install at the apartment. My computer is a dual core running XP.
So far I've had the best results with DigiPan but haven't spent much time with the other software yet. I tried copying CW with MixW but didn't have very good luck. Of course the signals weren't very strong at the time.
I also use TRX-Manager to control the radio and log the contacts. I haven't tried DigiPan logging yet to see if it's compatible with TRX-Manager but that's down the road.
Thanks again,
Tom
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NA0AA
Member

Posts: 1042




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« Reply #6 on: May 06, 2007, 09:50:37 PM »

WQ3T

Since I just ordered this very equipment for my FT-847, can you tell me what I need to look out for in implementing this system?

I bought the rear panel cable as that was what they recommended - since they are on back order, am I better going with the Mic and audio output cables instead?

KG6WOU
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