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Locked ICOM1300 frequency drop #transmit
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Arni Hagen
Thank you for the great explanation. W5SRO
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-----Original Message-----
From: main@WSJTX.groups.io <main@WSJTX.groups.io> On Behalf Of Martin G0HDB Sent: Sunday, September 4, 2022 1:38 PM To: main@WSJTX.groups.io Subject: Re: [WSJTX] ICOM1300 frequency drop #transmit On Sun, Sep 4, 2022 at 06:10 PM, Arni Hagen wrote: An example: My ICOM 7300 receive frequency reads 21.074.000 MHz asArni: See my explanation at: https://wsjtx.groups.io/g/main/message/33991 -- Martin G0HDB |
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Martin G0HDB <marting0hdb@...>
On Sun, Sep 4, 2022 at 06:10 PM, Arni Hagen wrote:
An example: My ICOM 7300 receive frequency reads 21.074.000 MHz as does theArni: See my explanation at: https://wsjtx.groups.io/g/main/message/33991 -- Martin G0HDB |
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Tim Dawson
To put your signal more in the center of the passband of the transmitter.
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You would also likely see that the TX audio sent to the rig is 1525 Hz . . . . 21.074 + 1025 or 21.0735 +1525 both put you in the same place . . . On September 4, 2022 11:44:26 AM CDT, Arni Hagen <aphagen@...> wrote:
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Sent from my Android device with K-9 Mail. Please excuse my brevity. |
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Arni Hagen
An example: My ICOM 7300 receive frequency reads 21.074.000 MHz as does the WSJTX main screen. The added audio offset is 1,025 Hz.
The PSK reporter receives me at 21.075.025 MHz and I have no problem making contacts. While transmitting, the ICOM and the WSJTX main screen drops to 21.073.500 MHz. Why the frequency drop? Thank you, Arni W5SRO |
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