开云体育

Hello Victor,

Welcome to the group!? Can you tell us what you're trying to do with Direwolf?? VHF APRS?? HF APRS?? Classic packet radio on VHF/UHF?

?

$ arecord -l?
**** List of CAPTURE Hardware Devices ****
card 0: CODEC [USB Audio CODEC], device 0: USB Audio [USB Audio]
? Subdevices: 1/1
? Subdevice #0: subdevice #0
card 2: PCH [HDA Intel PCH], device 0: ALC887-VD Analog [ALC887-VD Analog]
? Subdevices: 1/1
? Subdevice #0: subdevice #0

Ok.. looks like you want to use "card 0"

?

? $ cat ~/direwolf.conf
ADEVICE ?plughw:0,0
CHANNEL 0

Correct

MYCALL N0CALL

You need to change "N0CALL" with your amateur radio callsign.

MODEM 1200

This is correct if you plan on doing either APRS or classic packet on VHF/UHF.

PTT /dev/ttyUSB1 RTS

Since you report that the FT847 radio is keying up, these seem to be right

AGWPORT 8000
KISSPORT 8001

Do you plan to connecting direwolf to other applications that need AGW or TCP-KISS connectivity?? If no, turn these off by setting each of these to use port 0

IGTXLIMIT 6 10

You can leave that default in there but it's only needed for setting APRS packets to the Internet (aka IGATING)

# Parameters for VHF
FX25TX 1

Set this to 0 if you're doing VHF/UHF APRS or classic packet

RETRY 5
FRACK 3
MAXFRAME 7
EMAXFRAME 14
PACLEN 128
DWAIT 0

Depending on what you're going to do with Direwolf, you most likely will want to delete these lines and just use the defaults.? In some cases with doing classic packet, you might want to set some of these later when you're fine tuning things.

TXDELAY 25
TXTAIL 15

These are reasonable starting values but you'll want to see if you can pull in these values if your radio supports faster keyup times.

MAXV22 2

This is only useful for classic packet connecting to other modern packet TNCs like direwolf.? Is this your intention?

FULLDUP OFF

This is the default and isn't needed.

?

- With "ADEVICE ?plughw:0,0": the 847 does PTT fine, I can see the transceiver alternating TX but the HT doesn't receive anything

This is the correct setting but when you say the "HT doesn't receive anything", does the HT show it's receiving a full signal but you just don't hear anything?? If that's the case, you need to use the alsamixer tool to set the correct playback and microphone level settings for your "USB Audio CODEC" sound device.? The basics are covered in the Direwolf User Guide? and for proper levels to be best decoded, I recommend to read

Also.. I recommend to double-check your radios too:

FT847:
?? - I assume the radio is connected to antenna but how much power is it transmitting with?? For now, set it to it's lowest power level
?? - make sure the radio has the sqelch set wide open (hearing static all the time)
?? - make sure the radio is transmitting on a desired packet frequency in VFO mode (no + or - frequency shift)
?? - make sure the radio is transmitting on a desired packet frequency without any PL tone / DCS /etc

HT:
?? - I assume the radio is connected to antenna but how much power is it transmitting with?? For now, set it to it's lowest power level
?? - make sure the radio has the sqelch set wide open (hearing static all the time)
?? - make sure the radio is transmitting on a desired packet frequency in VFO mode (no + or - frequency shift)
?? - make sure the radio is transmitting on a desired packet frequency without any PL tone / DCS /etc

- With "ADEVICE ?plughw:2,0": the 847 does PTT fine, I can see the transceiver alternating TX, I can hear the sound through the computer speakers and the HT is receiving the signal.

The TNC sounds are coming out the computer speakers because sound device "plughw:2,0" is your computer's speakers!


--David
KI6ZHD

开云体育

Hello Victor,

1) ADEVICE plughw:0,0 : Obviously this value would be the correct but when I run "direwolf -x a" to test the audio device the 847 PTT fires up fine and I see in the 847 display how alternating "TX" and "DATA" quickly but the HT doesn't receive anything nor sound nor carrier.

I don't think the FT847 is firing up correctly at all as the alternating TX and DATA doesn't sound right.? In your initial email, you stated you had "PTT /dev/ttyUSB1 RTS" which seems right to me but maybe it's not correct for this radio or your cable isn't correct.? Googling around, talks about an internal jumper in the SCU17 for selecting AFSK vs. FSK.? You should check that jumper setting.? Here is another thread which talks about the "USB Audio CODEC" one being the correct one though that goes against what you're observing ( /g/RaspberryPi-4-HamRadio/topic/scu_17_behind_the_raspberry/75165151 ).? You might want to check out to see other serial options here like different polarity, maybe use the DTR line, etc. though I don't think that's your issue.

2) ADEVICE plughw:2,0 : This audio device shouldn't be the chosen but when I run again "direwolf -x a" the 847 PTT fires PPT up fine again and I see in the 847 the "TX" and "DATA" fixed NOT alternating. Also I can hear the tone in the PC speakers (as expected) and the HT receives a carrier and sound.

Hmmm.. this is all kinds of weird.? PTT is working regardless of the ADEVICE line because you're asserting PTT through an independent serial port.? As for selecting the correct sound device, you need to figure out what device is what.? I recommend to disconnect all sound devices from your computer, run the "aplay -l " command and see that no sound devices are listed, and connect each one until you know what's what.

--David
KI6ZHD