PSK31 Transmitter Level Adjustment

This video shows how to correctly setup your audio level to insure clean PSK31 signals.

QST, DEC 2007, page 50, Steve Ford, The Skunk at the Digital Party.

QuickMix
http://www.ptpart.co.uk/quickmix/

Category:

Science & Technology

Tags:

• K7AGE
• ham
• amateur
• radio
• hamradio
• PSK31
• PSK-31
• Yaesu
• Kenwood
• Icom
• Digipan
• ARRL
• TS-2000
• FT-817
• QST

[Aviator14]

I do not have an interface so would I still be able to put out a clean signal if I key the mic near the PC speaker and set digipan to speaker output?

[K7AGE]

@Aviator14 I have heard of guys doing this. Not the best, but it can work.

[insideofitall]

Thanks for the video! I just got the FT-817ND and am setting it up so this is a big help.

One quick question. If the IMD is okay, and you're not at full-power on the rig (maybe 2 or 3 watts or something like that), is it fine to have a couple of bars on the ALC? Since these rigs are low power as it is, I want to get as much out as possible without distorting or worrying about my finals.

[K7AGE]

@insideofitall You can still have distortion even with low power. The distortion comes from over driving the system. Set the audio level, raise it and watch the power out. When you see power out not increasing, back of the audio level a bit. Try a qso and ask if you signal is clean.

[andypanda758]

Great training .Ineed lots of help ,sorry.WELL DO I NEED TO HAVE A WORKING ANTENNA OR CAN I USE A DUMMY LOAD TO RECIEVE.,OR DO I NEED ONE AT ALLthanks KG4EWH.

[K7AGE]

@andypanda758 Always good to test into a dummy load.

[M6NKA]

Thanks for the really useful video. I wish i had a second receiver though ;( 73

[jssawyer1993]

Re turning down the radio power. If you keep your overs short, which is easy to do with macros the radio should have no problems with running at full smoke. I have been doing this with my 817 and HRD + Digital master 780 and everything seems to be okay. I'm now up to 32 contacts since I got to the rig about a month ago.

Jonathan

2E0VJO

[K7AGE]

@MM6ISM The video may be couple of years old, but just a valid today as when I posted the video. Randy

[K7AGE]

@lioii I would think no. FSK is for RTTY, and it is not dependent on audio levels from the pc. I think you need to be in the mode that the sound card is feeding the radio and adjust the audio level so that you are not over driving the radio.