Larry, don't worry at all about using high settings on the microphone gain. This gain is all in the DSP software (it is arithmetic) and has nothing to do with the sound card A/D converter level. I run it in the 80 range with the Heil mic here.
The Santa Cruz is also a good way to boost the mic if you like. This is covered in the digital mode configuration in the Delta 44 Quick Start guide. Gerald > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] Behalf Of Larry Loen > Sent: Wednesday, July 13, 2005 10:12 PM > To: Flex Radio > Subject: Re: [Flexradio] Low Power on SSB > > > I was hopeful that the Delta 44 would solve my cheap microphone > interfacing problems. Now I'm not sure it would help at any price of > microphone. > > I had been putting in some values well above 50 for mic gain (as I had > reported earlier) in the later 1.3.x versions of the beta. I've been > off SSB for a while now, but I believe the idea was I shouldn't really > be doing that. > > In any case, I just am finding that it is difficult interfacing whatever > mics I happen to have. To be sure, I haven't hooked up any expensive > ones, but I don't own any good ones right now and, besides, some of this > is about impedance matching and such, not price. > > I have two imaginable choices: > > 1. Hooking a PC mike into the Santa Cruz card's mic input. Here, the > problem is as simple as it is embarassing. I don't know how to ensure > the mic input shows up on output. I assume it might be as simple as > enabling a few things on its control panel or else I need some kind of > code to "copy" the audio stream. I just don't know. It could be a good > solution because, besides being cheap, it would leverage the fact that > I'm using it for digital mode right now, in USB, with success. So, one > presumes, I could make a mike work from that source quite nicely. If I > could check or uncheck something, to keep the mic live or dead at the > appropriate times, that would be great, because I could then simply swap > between digital and SSB in that manner. > > 2. Getting a audio preamplifier with minimal patch capabilities. At > Dayton, everyone was talking about a high quality device that ran about > 25 dollars. And, I can't find my notes. The value of this is that I > presumably can do a wider variety of impedance matches for the price of > maybe a 9 v battery or something. It also might turn out to be > necessary for when I switch to the laptop (losing the D44 and the Santa > Cruz) for the DXpedition. The audio interfacing on the laptop is very > minimal. Anyone remember the name of this device? > > It might even be that I'll end up with both solutions, one for the base > station, the other for the DXpedition. But, a little advice would go a > long way, here. > > > Larry WO0Z > > > > > > > _______________________________________________ > FlexRadio mailing list > FlexRadio@flex-radio.biz > http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz > > >
