Meaning in one setting grounding the pin will mute. In the other, grounding the pin will unmute. Some radios had an enable; others had a mute. I assume the pin has a pullup resistor?
-----Original Message----- From: Eric Wachsmann - FlexRadio [mailto:[EMAIL PROTECTED] Sent: Wednesday, December 14, 2005 5:49 PM To: 'richard allen' Cc: [EMAIL PROTECTED]; 'Larry W8ER'; 'Flex Reflector'; 'Jim Lux' Subject: RE: [Flexradio] Mute for SDR Receiver Meaning the polarity of the switch? I didn't implement that in my first pass, but that's a simple thing to add if necessary. Eric Wachsmann FlexRadio Systems > -----Original Message----- > From: richard allen [mailto:[EMAIL PROTECTED] > Sent: Wednesday, December 14, 2005 5:47 PM > To: [EMAIL PROTECTED] > Cc: [EMAIL PROTECTED]; 'Larry W8ER'; 'Flex Reflector'; 'Jim Lux' > Subject: Re: [Flexradio] Mute for SDR Receiver > > Eric, > > Make sure to allow the user to select if the input is a mute or an > unmute by having a check box for the sex of the input. > > Richard W5SXD > > "Eric Wachsmann - FlexRadio" <[EMAIL PROTECTED]> wrote: (12/14/2005 > 17:28) > > >The solution Larry and I discussed was an "audio only" fix that does not > >handle the RF side at all. We will be testing an "Auto Mute" function > >using X2-12 as an input. Grounding this input will assert the Mute > >function as it exists today. RF switching will need to be handled > >separately and should be considered carefully as others have noted that > >there _are_ reasonable limits (say what?) to what you can put into the > >SDR-1000 front end. I'll let the hardware experts talk about what those > >limits are. ;) > > > > > >Eric Wachsmann > >FlexRadio Systems > > > >> -----Original Message----- > >> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] > >> Sent: Wednesday, December 14, 2005 5:06 PM > >> To: Larry W8ER; [EMAIL PROTECTED]; 'Flex Reflector'; Jim Lux > >> Subject: Re: Re: [Flexradio] Mute for SDR Receiver > >> > >> Eric has to consider the protection of the front end of the receiver > >when > >> muting as I'm sure there is a max limit that can't be exceeded. > >> > >> My TEK analyzer says "Max +20 dbm" on the input. Cost me $2200 to get > >it > >> fixed the last time I didn't pay attention. > >> > >> Any leakage data on the various antenna relays available? > >> > >> Larry K2LT > >> > >> > > >> > From: "Larry W8ER" <[EMAIL PROTECTED]> > >> > Date: 2005/12/14 Wed PM 10:18:55 WET > >> > To: <[EMAIL PROTECTED]>, "'Flex Reflector'" <[EMAIL PROTECTED] > >> radio.biz>, > >> > "Jim Lux" <[EMAIL PROTECTED]> > >> > Subject: Re: [Flexradio] Mute for SDR Receiver > >> > > >> > Hi Jim, > >> > > >> > Yes, you are correct. I spoke with Eric on the landline earlier and > >was > >> able to explain it more clearly to him. Sometimes email just doesn't > >do > >> it as well as a phone call! I think he understands exactly what I was > >> looking for and may be working on a simple implementation. I can't > >> understand why someone else hasn't needed a "mute" function before > >this. > >> > > >> > -- Larry > >> > > >> > > >> > >> Larry Taft K2LT > >> T and T Measurements > >> drakerepair.com > >> 800-687-9161 > > > > > >_______________________________________________ > >FlexRadio mailing list > >FlexRadio@flex-radio.biz > >http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz
