Sounds like your overdriving the audio. You may need to turn down the volume. Now to power my Talking House from my sound card I only need 18% audio using my NextKast automation software with built in compressor and limiter. Good stuff.
If you are running on AM the issue is one of proper mono mixing. I never found my talking houses to be very good at this. A good way to combat this is either a force mono button on the console (if equipped), a mono output (if equipped) or lastly you can run your right and left audio on seperate pots Mixing them into a single channel.
Transmitters make noise, this is normal. The TH also has that built in speaker.
I can hear all my transmitters and their programming without a radio, all their coils "sing". The shortwave TX is the loudest singer.
Yea I am running AM and FM. The PC sound card is on AM and the external sound card is for the FM. For now with what I got it works. I might in the future get something but only time can tell on that. Thanks for also confirming the noise is normal, just wanted to make sure I wasn’t going to break my transmitter.
Just this morning I was thinking about the good luck I am having with my FM transmitters, one of which is a C.Crane FM2, another is an FM1.
My one wish is that I could turn off the stereo function because of the range problem the stereo generator causes with low power FM.
Two people have said they cut out the stereo generating crystal, but it would be better to add a switched circuit to give a mono/stereo choice.
The FM2 is apparently a total re-design over the FM1, they each have different circuits, but they both need a stereo defeat switch.
Selecting mono-only FM reception on receivers having that choice turns off the demodulation of the L-R subchannel, which removes much of the weak-signal noise in the audio output of that FM receiver.
I don't know how turning off the Stereo would help range as long as a FM receiver had the mono switch. The only thing I can think of is if your in a big city and want to be sue you don't bleed nearby stations. Switching to mono will only give a slight narrower signal. But probably not enough to notice anything.
... Switching to mono will only give a slight narrower signal. But probably not enough to notice anything. ...
The added noise at the receiver outputs for analog FM stereo transmission and reception is the result of the wider r-f spectrum required to transmit/receive analog FM stereo.
Even when the transmit system uses analog stereo, switching the receiver to monaural mode (if that is provided) will reduce the r-f spectrum processed by that FM receiver -- which will very significantly reduce the noise level present at its audio outputs, for weak FM signals.