Soundclash Tunes Rarest. Figure 1: A weather fax received with the RX320D by Ten Tec. Click to enlarge. Posted: So, I’d been trying to obtain weather faxes, of the type transmitted by the shortwave weather transmitters run by the US Coast Guard, and do that by using the little Soft66 Lite SDR board. I’d added a preamp to that line-up in order to improve results, yet it seemed that improvement was needed still. So I purchased a Ten Tec RX320D, to see if I could improve the odds that on any given day I could retrieve very high quality weather faxes via shortwave.

The first tests of the setup yielded promising results. Figure 2: RX320D, by Ten Tec, with “homemade” serial gender changer. Click to enlarge The power supply that came in the package for the RX320 was stamped “15 VDC.” Before I applied any power to the 320, I checked the supply, and found it was supplying 20 VDC instead of 15 VDC. So, I took one of the little DC-DC converters I’d recently purchased from a seller in Las Vegas, and dialed the supply down to exactly 15 VDC. I installed the Linux software for the RX320D, using the instructions found on longwire.com, plugged the serial cable into the PC and also into the RX320D, connected an audio cable from the RX320D (line input) to the line-input connector of the PC, and threw the power switch to the “on” position. Labview Serial Number Generator.