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wb2osz / direwolf

Dire Wolf is a software "soundcard" AX.25 packet modem/TNC and APRS encoder/decoder. It can be used stand-alone to observe APRS traffic, as a tracker, digipeater, APRStt gateway, or Internet Gateway (IGate). For more information, look at the bottom 1/4 of this page and in https://github.com/wb2osz/direwolf/blob/dev/doc/README.md
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Way to change/add preamble for vox? #75

Closed ChloesPJs closed 7 years ago

ChloesPJs commented 7 years ago

Hi, I know and fully understand that Vox is not recommended by any means however I am having to build a small, cheap and easily replicated setup for a major event coming up in April. We will need to track our support and response vehicles around a large area of hilly countryside so plan to have a small network of digipeater's. We will be using Wouxun and Baofeng handheld radios that we already have for this and using direwolf on raspberry pi's. I have got everything running perfectly except the vox does not kick in in time for the first bit of data. Is there a way of increasing (I think there is a little bit) or adding some extra preamble (or tone) to the transmission so that it will key the vox in time for the data.

I would much appreciate any help you can provide. I know my way around code so if you happen to just know where I can change a value then I can probably do that.

Thanks in advance! James, 2E0JPM

P.S. Direwolf is awesome.... I'm blown away by the features and abilities it has. Thank you so much!!

wb2osz commented 7 years ago

This is the place for reporting software bugs and making enhancement requests.

It is not the place for getting support.

The main page lists a few discussion groups for asking questions and sharing information.

Increase the TXDELAY value as explained in the User Guide.

From: james-jimjam [mailto:notifications@github.com] Sent: Monday, January 02, 2017 8:59 PM To: wb2osz/direwolf Cc: Subscribed Subject: [wb2osz/direwolf] Way to change/add preamble for vox? (#75)

Hi, I know and fully understand that Vox is not recommended by any means however I am having to build a small, cheap and easily replicated setup for a major event coming up in April. We will need to track our support and response vehicles around a large area of hilly countryside so plan to have a small network of digipeater's. We will be using Wouxun and Baofeng handheld radios that we already have for this and using direwolf on raspberry pi's. I have got everything running perfectly except the vox does not kick in in time for the first bit of data. Is there a way of increasing (I think there is a little bit) or adding some extra preamble (or tone) to the transmission so that it will key the vox in time for the data.

I would much appreciate any help you can provide. I know my way around code so if you happen to just know where I can change a value then I can probably do that.

Thanks in advance! James, 2E0JPM

P.S. Direwolf is awesome.... I'm blown away by the features and abilities it has. Thank you so much!!

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wb2osz commented 7 years ago

Tip: Avoid use of VOX built into your transceiver.

This is designed for voice operation and will keep the transmitter on about a half second after the transmit audio has ended. This is much too long. Others will probably start transmitting before you stop.

For an explanation, see the section called, “Radio Channel – Transmit Timing.”