Re: [digitalradio] JT65 Flatten Spectrum Option
Andy, I dunno about that. It all depends on whether or not your flattened spectra lasted for more than four hours! Howard W6IDS Richmond, IN - Original Message - From: Andrew O'Brien To: digitalradio@yahoogroups.com Sent: Thursday, April 19, 2007 9:36 PM Subject: Re: [digitalradio] JT65 Flatten Spectrum Option Yes, I noticed my spectra was flattened . I was hoping it would not cause my wife to leave me and...oh wait, wrong subject. Seriously, I did some Spectra testing last night and found turning it off solved the problem. Then this morning I received a message Unable to allocate a bivariate polynomial for factorization. That sounds more painful that a flattened spectra. SNIP SNIP
Re: [digitalradio] JT65 Flatten Spectrum Option
Yes, I noticed my spectra was flattened . I was hoping it would not cause my wife to leave me and...oh wait, wrong subject. Seriously, I did some Spectra testing last night and found turning it off solved the problem. Then this morning I received a message Unable to allocate a bivariate polynomial for factorization. That sounds more painful that a flattened spectra. Andy K3UK On 4/19/07, KT2Q [EMAIL PROTECTED] wrote: Andy: As you noted last night, the Flatten Spectrum option in SpecJT tends to cause the waterfall to go black when receiving strong signals. Reducing the RX audio will make it worse; increasing the audio seems to solve the problem. The SpecJT gain should give the same effect. See attached. The FS option flattens (evens out) the audio passband frequencies and it seems to act as an audio-in AGC allowing stronger RX noise levels without masking weaker signals. I've been using WSJT for many years, but this is all new to me since I've only used the mode on VHF meteor scatter and the occasionaly EME contact where signals are a lot weaker than what we see on HF. Hope this helps.. Tony KT2Q -- Andy K3UK Skype Me : callto://andyobrien73 www.obriensweb.com
