One other technique is to leave the rig in USB mode, crank the Hi / Shift down to 1400 hz and tune the frequency until the interfering signal is at 1500 hz (or use the Lo / Width if the interfering signal is on the low side). The minimum width is about 400 hz this way, not 50 hz, but it is very effective in reducing the interference.
Howard K5HB ________________________________ From: Andy obrien <[email protected]> To: [email protected] Sent: Mon, January 25, 2010 5:49:49 AM Subject: Re: [digitalradio] Re: Super narrow filter: PSK31 with HB9DRV SDR-RADIO On Mon, Jan 25, 2010 at 6:29 AM, aa777888athotmaildo tcom <aa777...@hotmail. com> wrote: > > > > > > > > > > > > > > > > > >> > >> > >If you are using an IC7000 this is as easy as adding a filter "slider" control >to either HRD, DM780 or both. It's not too hard from the front panel, either. >There are also three filter presets. I'll leave one at full bandwidth and >another at the bandwidth of the mode I'm using. 50Hz is no problem. Watch the >entire waterfall, pick on a signal, hit the QSY/center button, hit the filter >button and answer. If I wasn't so lazy I'd write a macro. >yes, the Icom rig's make this easier. Andy.
