+ can we make it larger?
[ ] labels near R52, R47, R42, R46 on sch that match overlay and enclosure
-Matt testing 28 Jan 2015
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-
- + First SM1000 OTA SM1000 QSO between VK5AKH (Andy) and VK5ZM (Matt) at
- Matt's QTH. Matt connected the SM1000 to his IC706. 2130 SA time
-
- 0. Connected up patch panel, used rig mic, ptt, rig spkr through RJ45.
- spkr and ptt had common ground which required and extra grnd jumper.
- Matt " for fat fingers rather fiddly". Would be good to doucment this
- for common radios.
- 1. While monitoring with FT817 found similar slope on spectrum/scatter
- diagram to IC7200
- + HF modem tones around 2000 Hz attenutaed by several dB
- + get to the bottom of tx slope, say with test signal
- 2. Andy sounded a bit distorted on rx
- + Backed off his mic level and was better
- 3. Matt lugged in a Heil headset, had to reduce mic gain, clipping led
- was very useful. No noise issues. Mic gain trimmer was a little too
- sensitive. Suggest multiturn trimmer.
- 4. Analog mode works OK once mic gain adjusted. Tip: do mic level adj
- in analog mode, then dig should be OK.
- 5. Switching an to dig worked OK, levels OK.
- 6. AF gain of IC720 was slaved to the AF out in RJ45. So trap is turning
- down AF gain stopped FreeDV, turning up led to clipping.
- 7. Secondary use is analog processing. Move sliders to adf filters,
- look at audio spectra with white noise or chirp, monitor on 2nd radio.