YEASU FT-70 C4FM no Transmit with OSP

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HBYVZ
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YEASU FT-70 C4FM no Transmit with OSP

Post by HBYVZ »

Hi, I programmed my FT-70 to
Receive: 436.00000
Send: 436.00000
Simplex
OperationsMode: DN
AMS: off
when I switch Modem to C4FM and FCS001 Talkgroup 003 (Switzerland)
I can hear the voice message from the OSP on my FT-70. But when I try to send - OSP dosen't receive - no red led lights up - and no info show up in the status page. What is wrong with my configuration?
Rgs, Erwin
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HA2NON
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Re: YEASU FT-70 C4FM no Transmit with OSP

Post by HA2NON »

Please turn off half deviation in your radio.
Norbert Varga, HA2NON
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Re: YEASU FT-70 C4FM no Transmit with OSP

Post by HBYVZ »

in the manual for e.g. FT1DR there is an option with Half deviation: Off/On. But in my radio FT-70 there is no such option.
In the Manual of the FT-70 there is only an option W/N.DEV (Set the Transmit Modulation Level in the FM mode to WIDE / NARROW. But I'm using for mode DN (Normal digital mode). Rgs Erwin HB9GNK
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HA5OGR
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Re: YEASU FT-70 C4FM no Transmit with OSP

Post by HA5OGR »

You're correct. There is no Half deviation option in Yaesu FT-70 menu. Please also have a look FT-70DE advance manual. In set mode operation menu please try no. 16 digital voice mode selection ON/OFF. If this doesn't work I suggest ask Yaesu.

73's de Lajos
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73 de Lajos
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Re: YEASU FT-70 C4FM no Transmit with OSP

Post by HBYVZ »

Well - I did try it with option 16 DIG VW OFF it was set on (Voice FR Mode VW), but I did not work - osp dosen't receive my transmission...
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Re: YEASU FT-70 C4FM no Transmit with OSP

Post by HA2NON »

The next openSPOT beta firmware will support C4FM half deviation mode.
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Re: YEASU FT-70 C4FM no Transmit with OSP

Post by HA5OGR »

Hold on! The new firmware is under the test. :D
73 de Lajos
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Re: YEASU FT-70 C4FM no Transmit with OSP

Post by HBYVZ »

Hi Norbert,

I tried this new firmware. The autocal connector – gives modulation=A which has some BER. So I tried all C4FM demodulation modes and I think Mode C has no BER. As you can see openspot now receives my call.
With C4FM demodulation mode C:
Unfortunately there was no possiblity to talk to someone. Because no one was active…
Hope this helped you.
Rgs
Erwin
Vy 73
HB9GNK
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