Radioddity GD-77

Use this section to discuss Digital Amateur Radio operations, such as D-Star and other digitally-encoded traffic
User avatar
kilimax
Top Poster
Top Poster
Posts: 1972
Joined: 05 May 2014, 09:18
Call Sign: GM0BRJ
Location: Same Country as Buick Mackane

Re: Radioddity GD-77

Post by kilimax » 14 Aug 2017, 18:34

My GD-77 arrived today.

No extra duty to pay which was great. It's very early days but I have to say the quality is quite impressive considering the price. While not as solid as my Retevis RT-82, it has a good feel to it and It's also smaller in size. The screen is not as good as the RT-82 but is very usable.
Both my Retevis RT-3 and this new radio can use the same charging base so that's a bonus.

Programming software is basic but it works. If you can program a TYT or Retrevis DMR, this shouldn't be too much bother. So far, I've programmed a couple of analogue repeaters and one of the DMR simplex frequencies. The basic DMR channel setup (Amateur UHF DH1) works with my Retevis RT-82, my RT-3 and the GD-77 so at a basic level, it's compatible.

More to test but so far, for just over $100 delivered, it's an absolute bargain!

Image
Image
Kilimax - Drew
Amateur Callsign GM0BRJ
Tango Mike Callsign 108TM144

I've changed my equipment so many times, I've forgotten what I have

User avatar
Admiral
Legend
Legend
Posts: 9695
Joined: 08 Mar 2011, 21:20
Call Sign: 26TM157
Location: MK-UK

Re: Radioddity GD-77

Post by Admiral » 14 Aug 2017, 20:20

Does it have better ears than your RT-82?
Winner of the 2017 IBTL 'Summer Sizzler' competition

User avatar
kilimax
Top Poster
Top Poster
Posts: 1972
Joined: 05 May 2014, 09:18
Call Sign: GM0BRJ
Location: Same Country as Buick Mackane

Re: Radioddity GD-77

Post by kilimax » 14 Aug 2017, 20:59

Admiral wrote:Does it have better ears than your RT-82?
It's better than my "first" RT-82 but my replacement is spot on now.
Kilimax - Drew
Amateur Callsign GM0BRJ
Tango Mike Callsign 108TM144

I've changed my equipment so many times, I've forgotten what I have

BK
Top Poster
Top Poster
Posts: 1244
Joined: 17 Jan 2007, 11:17

Re: Radioddity GD-77

Post by BK » 14 Aug 2017, 22:52

kilimax wrote:It's better than my "first" RT-82 but my replacement is spot on now.
On the RT82, do you get a loud 'pop' at the start of the audio when receiving DMR? Mine does this, and my old MD380 did it too. It's particularly distracting when a station is dropping in and out of repeater coverage (even though your reception of the repeater is solid) because you get pops all over the place, not when the station drops out but when it comes back again.

User avatar
Admiral
Legend
Legend
Posts: 9695
Joined: 08 Mar 2011, 21:20
Call Sign: 26TM157
Location: MK-UK

Re: Radioddity GD-77

Post by Admiral » 14 Aug 2017, 23:07

Paul has also got his GD-77.

https://www.youtube.com/watch?v=Z8c7XEJ-ap4
Winner of the 2017 IBTL 'Summer Sizzler' competition

User avatar
kilimax
Top Poster
Top Poster
Posts: 1972
Joined: 05 May 2014, 09:18
Call Sign: GM0BRJ
Location: Same Country as Buick Mackane

Re: Radioddity GD-77

Post by kilimax » 15 Aug 2017, 10:58

BK wrote:
kilimax wrote:It's better than my "first" RT-82 but my replacement is spot on now.
On the RT82, do you get a loud 'pop' at the start of the audio when receiving DMR? Mine does this, and my old MD380 did it too. It's particularly distracting when a station is dropping in and out of repeater coverage (even though your reception of the repeater is solid) because you get pops all over the place, not when the station drops out but when it comes back again.
Yes, it does do that, as does my RT-3 and most other stations, even listening via the DV-Mini. I hear this often.
Most likely just the digital equivalent to drop out and receiver reacquiring the signal.
Kilimax - Drew
Amateur Callsign GM0BRJ
Tango Mike Callsign 108TM144

I've changed my equipment so many times, I've forgotten what I have

User avatar
kilimax
Top Poster
Top Poster
Posts: 1972
Joined: 05 May 2014, 09:18
Call Sign: GM0BRJ
Location: Same Country as Buick Mackane

Re: Radioddity GD-77

Post by kilimax » 15 Aug 2017, 11:32

Admiral wrote:Paul has also got his GD-77.

https://www.youtube.com/watch?v=Z8c7XEJ-ap4
Broadly in line with what I have found so far.
Kilimax - Drew
Amateur Callsign GM0BRJ
Tango Mike Callsign 108TM144

I've changed my equipment so many times, I've forgotten what I have

BK
Top Poster
Top Poster
Posts: 1244
Joined: 17 Jan 2007, 11:17

Re: Radioddity GD-77

Post by BK » 15 Aug 2017, 16:27

kilimax wrote:
BK wrote:On the RT82, do you get a loud 'pop' at the start of the audio when receiving DMR? Mine does this, and my old MD380 did it too. It's particularly distracting when a station is dropping in and out of repeater coverage (even though your reception of the repeater is solid) because you get pops all over the place, not when the station drops out but when it comes back again.
Yes, it does do that, as does my RT-3 and most other stations, even listening via the DV-Mini. I hear this often.
Most likely just the digital equivalent to drop out and receiver reacquiring the signal.
OK, thanks for that. I can't believe the likes of Motorola would do this, it should be an easy problem to solve. I don't recall my SDR dongle ever doing it.

User avatar
kilimax
Top Poster
Top Poster
Posts: 1972
Joined: 05 May 2014, 09:18
Call Sign: GM0BRJ
Location: Same Country as Buick Mackane

Re: Radioddity GD-77

Post by kilimax » 15 Aug 2017, 17:22

BK wrote:
kilimax wrote:
BK wrote:On the RT82, do you get a loud 'pop' at the start of the audio when receiving DMR? Mine does this, and my old MD380 did it too. It's particularly distracting when a station is dropping in and out of repeater coverage (even though your reception of the repeater is solid) because you get pops all over the place, not when the station drops out but when it comes back again.
Yes, it does do that, as does my RT-3 and most other stations, even listening via the DV-Mini. I hear this often.
Most likely just the digital equivalent to drop out and receiver reacquiring the signal.
OK, thanks for that. I can't believe the likes of Motorola would do this, it should be an easy problem to solve. I don't recall my SDR dongle ever doing it.
I don't have access to a Motorola here to test so cannot comment. I tend to find the popping sound is most audible when listening through one of the DMR repeaters. I don't get anything when using simplex but again, signals are strong both ways so there's no drop out.
Kilimax - Drew
Amateur Callsign GM0BRJ
Tango Mike Callsign 108TM144

I've changed my equipment so many times, I've forgotten what I have

sec1223
Top Poster
Top Poster
Posts: 1653
Joined: 28 May 2010, 09:28
Location: west yorkshire

Re: Radioddity GD-77

Post by sec1223 » 15 Aug 2017, 19:33

think il buy one.
cant stand IGNORANT b******ds

User avatar
kilimax
Top Poster
Top Poster
Posts: 1972
Joined: 05 May 2014, 09:18
Call Sign: GM0BRJ
Location: Same Country as Buick Mackane

Re: Radioddity GD-77

Post by kilimax » 02 Sep 2017, 21:16

Anyone thinking of buying one of these, Amazon have them in stock.

https://www.amazon.co.uk/dp/B074HX8T9K/ ... QzbXDX9AXN

For £77 delivered, I've ordered another one to play about with outside of the Amateur bands.
Kilimax - Drew
Amateur Callsign GM0BRJ
Tango Mike Callsign 108TM144

I've changed my equipment so many times, I've forgotten what I have

User avatar
delboyonline
Top Poster
Top Poster
Posts: 1061
Joined: 04 Oct 2007, 20:40

Re: Radioddity GD-77

Post by delboyonline » 06 Nov 2017, 17:25

Image

Just picked one up myself, great little radio for the price.

.

DrumGeek
Regular
Regular
Posts: 42
Joined: 12 Sep 2012, 14:16

Re: Radioddity GD-77

Post by DrumGeek » 07 Nov 2017, 16:11

Hi All,

Does anyone know if this radio does proper dual receive?
i.e. will it hear both VFOa and VFOb at the same time with either 2 analogue freqs, 1 analogue and 1 digital, or 2 digital?

Thanks,
Mark...
Uniden BCD396T | Uniden UBC780 XLT | Commtel COM215 | Realistic Pro-35 | Realtek RTL820 SDR x2 | SDR Play RSP2 | PiAware/Flightaware ADS-B Receiver | Yaesu FT-817ND | Wouxun KG-UV8D | Tytera MD-380

Steve B
Regular
Regular
Posts: 59
Joined: 30 Apr 2017, 03:53
Location: Europe ;)

Re: Radioddity GD-77

Post by Steve B » 07 Nov 2017, 22:12

Someone I know locally has gotten one of these recently... previously they had an FM baofeng. Now with it he comes out stronger than ever before, signal screaming through the walls. Albeit this is with FM.
30-Tango-Mike-003
Good Christian Boys: Midland G7 XTR "Street-Legal" PMR 3-watter - Kenwood UBZ-LJ8 PMR446 - Intek FM548SX (With Homogolation boys 8) )
Naughty Boys: Philips 25W FM1100 UHF w/PA4DEN - Baofeng UV5RA, Superstar 360FM (My good one!) w/ CTE 747 100W Amp

k1lho
Registered New User
Registered New User
Posts: 1
Joined: 13 Nov 2017, 05:38
Call Sign: K1lho

Re: Radioddity GD-77

Post by k1lho » 13 Nov 2017, 06:05

I purchased a GD-77 and think it's GD radio. It's codeplug data format is not compatible with the the much more popular MD-380.


The DG-77 requires receive groups in addition to contacts. This significantly complicates programing. Even worse, you can only have 16 receive groups which may be less than the number of contacts. If you place several contacts in a single receive group, you'll be listening to several TG's at the same time with no way of differentiating the dialogue from each.

Post Reply

Who is online

Users browsing this forum: No registered users and 0 guests