The Elecraft mics, I know, require bias or you get no output.
73,
-- Dave, N8SBE
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On 2023-06-15 23:31, JOHN BUMGARNER via groups.io wrote:
I tried my Elecraft mic which I know works, with the same result.?
?
On Jun 15, 2023, at 10:08 PM, Ashhar Farhan <farhanbox@...> wrote:
Can you try the 2 tone mode and check the power output? Is it possible that there is a problem with the mic? The low level RF indicates that there is marginal output from the digital parts.
I would try another mic. Do not attempt any calibration.
- f
On Fri, Jun 16, 2023, 7:19 AM JOHN BUMGARNER via <john.bumgarner=
[email protected]> wrote:
I Just upgraded the software to the latest on github.? Then I Tried transmitting into a 10 watt dummy load and measuring power out on a qrp meter with various modes on 20m. With the drive set at 39 I was getting 7 watts out on CW, FT8, and PSK31 with both the radios meter and the qrp meter. Then I tried SSB with the supplied mic on various mic gain settings from 20-50. Neither of the power meters showed movement, although I could see what looked like random noise at a low level on the waterfall. I upped the drive but there was. still no power out.
I'll try to look at the schematic tomorrow, but I have very limited skill in that area. Any ideas on how to fix this will be appreciated.?
73 Reed AA1RB
