On Fri, 26 Oct 2007 08:03:10 -0000, charmquark69 wrote: > ALC set really low
It's better to have no sign of ALC. If the Circuit must work, the Input is to High and the Audio could be dissorted. I use a Kenwood TS-480. My Setup of the RIG and the Audio is as follow: HF-Power Output is on Maximum (Don't shout, I don't use 100 Watt). Slowly adjust the HF-Output with the Audio Volume of your Soundcard. Watch the ALC-Meter. If there is a sign of working, Maximum Output is arrived. Cut down the Audio Volume a little bit and the Signal should be clean. With this Setup, i can use up to 90 Watt in PSK (i use 25 to 30 Watt). Never got complains and i have seen a screenshot of my Stream. High SWR: Yes, that could be a reason for bad Modulation. The Circuit cuts down the Output very harsh and than tries to TX with Full Power again. If the SWR is still high, it cuts down again and tries again. In SSB, the Modulation sounds than very dissorted. >But could this be the only reason for bad mod? And again, is there a >tool/piece of hardware/software I could use to check the cleanness >(or otherwise) of the signal AFTER it's left the TRX? Or is it >simply a case of having separate RX in the shack, tuned to my freq, >connected to the PC, and inspect the waterfall/spectrum there? Look for "PSK-Meter", thats Hardware. Or for a nearby OM for an ON AIR Test. 73 de Heinz-Juergen DO1YHJ
