[arm-allstar] DRA818V VHF Band Voice Transceiver Module and DRA818U UHF Band Voice Transceiver Module
w0anm73 at gmail.com
Tue Nov 25 18:51:18 EST 2014
I am currently working an a proof of concept Allstar node using this Dorji
Module. I just got the module on the air as Allstar node 29061. I used a
modified FOB and the DRA818U module. The module works well and has nice
audio and running 500mw.
I did have issues programming the device. Any commands sent were responded
by an error command. I found an Arduino Library that I thought I would
try to help determine the root cause and see how someone else programmed
the module. It also gave the same results and I was afraid that the module
may be bad. I added a CONNECT command to the library to see how that would
respond. After adding the "AT+DMOCONNECT\r\n" command prior to other
commands, it work as it should, not it's not clear why.
I am currently using the Arduino Mino Pro 3.3V to set the module settings
and it's seems to be working just fine. I plan to use the Arduino as a
simple interface to program and setup the module. Ultimately, I would like
to use the BBB UART modules, but the current kernel does not support the
cape manager and the addiontal UART modules are not part of the overlays.
Here is a pointer to my project notes and an image of the current project:
I still need to complete the 3.3V power supply and complete the
Thank you for adding the URL docs to your email. I have not see some of the
app notes so it may give me an insight to why I had issues.
73, Chris, w0anm
(Allstar node 29061, 29062)
On Tue, Nov 25, 2014 at 1:18 PM, ssedgwick <ssedgwick at suddenlink.net> wrote:
> I saw these VHF and UHF voice transceivers modules talked about on
> another VOIP Yahoo group a couple weeks ago. After looking at the specs, I
> see they are based on the RFIC RDA1846 transceiver IC chip. Looks like a
> way to make a nice portable hot spot when tied to the BBB and the fine work
> Doug and others have done with Allstar. I’m not a programmer, but I wonder
> if it would be possible to interface these modules to a BBB and be able to
> program the RF freuqency, PL, DPL, etc using touchtone commands, or if
> that’s not possible to program via ssh?
> Here’s a couple links to DRA818 modules and also ebay listings for both
> the VHF and UHF models.
> arm-allstar mailing list
> arm-allstar at hamvoip.org
> Visit the BBB web page -
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