rceforge.net
Subject: Re: [Freetel-codec2] Codec2 and OpenGD77
I have long wondered about this sort of thing. A few thoughts:
AIUI, DMR specifies lots of things and technically leaves hte codec
unspecified. So essentially all "DMR digital voice" is properly
called DMR/AMBE
being able to
drop firmware into a $70 2m/70cm handheld is still pretty cool.
Cheers,
Eric
*From:*David Rowe
*Sent:* February 2, 2021 14:35
*To:* freetel-codec2@lists.sourceforge.net
*Subject:* Re: [Freetel-codec2] Codec2 and OpenGD77
Hi Danilo,
I think Eric's proposal was just to sw
up, but being able to drop
> firmware into a $70 2m/70cm handheld is still pretty cool.
>
>
>
> Cheers,
>
> Eric
>
>
>
> *From:* David Rowe
> *Sent:* February 2, 2021 14:35
> *To:* freetel-codec2@lists.sourceforge.net
> *Subject:* Re: [Freetel-codec2] Codec2 and O
Subject: Re: [Freetel-codec2] Codec2 and OpenGD77
Hi Danilo,
I think Eric's proposal was just to swap out the codec, and perhaps using the
existing modem on the radio?
The current FreeDV modes we have ported to the stm32 (1600 and 700D) are aimed
at HF channels, and the GD77 pro
Hi Eric, Danilo, David and all,
I read with interest. First, could we start noting 90% of us hams have a
multi-mode HF-VHF transceiver with CAT control.
Or, at the very least the standard DIN audio in/out and PTT connector.
Am I special here? I have three Yaesu radios: FT-840, FT-897D and an FT
Hi Danilo,
I think Eric's proposal was just to swap out the codec, and perhaps
using the existing modem on the radio?
The current FreeDV modes we have ported to the stm32 (1600 and 700D) are
aimed at HF channels, and the GD77 probably doesn't have the RF hardware
to support them (e.g. a SSB
Hi,
I'd like to share my thoughts on this, as I also have some GD77 and love
the OpenGD77 FW (main reason for getting these). I have some experience
with porting FreeDV to the STM32 arm processor as I was one of the
developers who integrated Codec2 into the UHSDR Firmware a couple of
years ago.
Hi Eric,
Funny that you mention OpenGD77 as last month I discovered these radios
(Baofeng DM-1801 in my case) and picked up two of them off of aliexpress
with codec2 being the primary reason for my purchase.
There are 4 reasons why I think they would be great fit for codec2:
- They're cheap ($6
I don't know enough about CODECS to know the right answer (thus must
post here), but right now the OpenGD77 source basically includes an
bit of assembly language to call some binary code lifted out of the
vendor's original firmware. My interest is to drop in a different
CODEC, but I don't know enou
Hi Alan,
HF would definitely be interesting, but right now I'm focused on
VHF/UHF. My understanding of the GD77 family is that the modulation
(DMR, two slots per channel) is in hardware, so the best we can do is
drop in a different CODEC, but we could have to use the same data rate
and RF modulati
I'm thinking M17 (based on Codec2) might be better to incorporate since
it's already building in routing type features that DMR, D-STAR, etc.
already have. I'm not really familiar with OpenGD77 but it seems like a
neat project. Unfortunately I don't have a compatible HT (I use a MD-380
for DMR) but
Hi Eric,
If the radio GD77 and clones did HF, I'd be super interested!!
"In my view" we have neglected the need for "semi-secure" voice
comms over HF. HF because there are many many areas where VHF/UHF
does not cover.
Also "In my view" on VHF and UHF we have not, in "Digital Voice",
Codec2 in pa
12 matches
Mail list logo
