I used a glue gun on L3 to keep it frequency stable, I love this little radio, it sounds like a big base station radio, great audio, thanks for the upload.
Love the Hallicrafters SX-42 on your QSL Card! I have one here the I got at NEAR-Fest a while back. I also have a Ten-Tec 1340 from an estate sale. However, when I finally got around to putting it on the air five years later, the tone faded to hash after a few seconds. Now it is unusable. I read the manual, but I don't know how to diagnose and repair these things. The SK that built it reported making several contacts with it before he passed away. 73 Paul AA1SU
The Ten-Tec 1320 is a fabulous little radio. I wrote a review in the August 2020 issue of the British magazine, RadCom. I've done some slight modifications to mine. Two were simply safety: a big diode on the power input socket and in-line fuse for reverse polarity protection. Similarly, a diode in series with the key socket to avoid problems if the power lead was plugged in by mistake, since both use identical RCA / Phono connectors. The other mod was to reduce the unpleasant "clunky" sound when keying. Yours doesn't sound unpleasant, but mine was, especially through headphones. This was a mod I found on-line, ostensibly from Ten-Tec. Install a 10k resistor between pins 4 and 8 of U4, and remove C1 (4u7) and C86 (1u). The set is now much kinder on the ears, while not affecting the transmitted waveform. 72, 73 es gd dx Mark GØOIW
Oh, there's another mod. Here in Europe, strong broadcast stations from the 49 metre band used to break into the 6144kHz i.f., especially at night. Soldering the cans of the filter together and to ground considerably reduced the problem.
I used a glue gun on L3 to keep it frequency stable, I love this little radio, it sounds like a big base station radio, great audio, thanks for the upload.
Love the Hallicrafters SX-42 on your QSL Card! I have one here the I got at NEAR-Fest a while back. I also have a Ten-Tec 1340 from an estate sale. However, when I finally got around to putting it on the air five years later, the tone faded to hash after a few seconds. Now it is unusable. I read the manual, but I don't know how to diagnose and repair these things. The SK that built it reported making several contacts with it before he passed away. 73 Paul AA1SU
The Ten-Tec 1320 is a fabulous little radio. I wrote a review in the August 2020 issue of the British magazine, RadCom.
I've done some slight modifications to mine. Two were simply safety: a big diode on the power input socket and in-line fuse for reverse polarity protection. Similarly, a diode in series with the key socket to avoid problems if the power lead was plugged in by mistake, since both use identical RCA / Phono connectors.
The other mod was to reduce the unpleasant "clunky" sound when keying. Yours doesn't sound unpleasant, but mine was, especially through headphones. This was a mod I found on-line, ostensibly from Ten-Tec. Install a 10k resistor between pins 4 and 8 of U4, and remove C1 (4u7) and C86 (1u). The set is now much kinder on the ears, while not affecting the transmitted waveform.
72, 73 es gd dx Mark GØOIW
Oh, there's another mod. Here in Europe, strong broadcast stations from the 49 metre band used to break into the 6144kHz i.f., especially at night. Soldering the cans of the filter together and to ground considerably reduced the problem.