Search found 312 matches

by kd2lh
Fri Aug 28, 2020 10:58 pm
Forum: New members must post here first
Topic: hello
Replies: 2
Views: 1352

Re: hello

Welcome to the project. I think you'll find the OpenGD77 CPS and firmware rather interesting and useful.

Marc
by kd2lh
Tue Aug 18, 2020 7:47 pm
Forum: New members must post here first
Topic: Hello from KC4VJO
Replies: 4
Views: 1873

Re: Hello from KC4VJO

Welcome to the project. It's a testament to the power of open technology, and the prowess involved in reverse engineering a very complex C-6000 chip "black box"...

You'll be impressed with what you can do with your radio now!

Marc
by kd2lh
Tue Aug 04, 2020 11:35 pm
Forum: New members must post here first
Topic: Hello from a Retired First Responder
Replies: 5
Views: 2687

Re: Hello from a Retired First Responder

Welcome to the project. After you're licensed, note that you can also use recycled P25 radios like Motorola's MTS-3000 on ham radio with networks like Brandmeister through the use of radio "Hotspots". These devices can communicate with DMR, P25, YSF, and other digital FM protocols, and interconnect ...
by kd2lh
Sat Aug 01, 2020 9:09 pm
Forum: General discussions
Topic: [Solved] Pi-Star cannot receive OpenGD77's signal
Replies: 13
Views: 6912

Re: [Solved] Pi-Star cannot receive OpenGD77's signal

These are all a tradeoff. The JumboSpot (simplex and even duplex versions) are very very compact and remarkable pieces of technology. If you read the details of the AF7021 SDR radio receive/transmit chip you'll find that it does have an AFC implementation available. https://www.analog.com/en/product...
by kd2lh
Wed Jul 29, 2020 10:27 pm
Forum: General discussions
Topic: [Solved] Pi-Star cannot receive OpenGD77's signal
Replies: 13
Views: 6912

Re: Pi-Star cannot receive OpenGD77's signal

Note that the Pi-Star running on "JumboSpot" hardware (with one of the radio "hat" boards on a Raspberry Pi) have a Software defined Radio chip without Automatic Frequency Control implemented. This means that the fine adjustment of the center of the radio's reception frequency is necessary, and the ...
by kd2lh
Tue Jul 21, 2020 6:32 pm
Forum: New members must post here first
Topic: SM0YXI
Replies: 1
Views: 1289

Re: SM0YXI

Welcome to the project!
by kd2lh
Sun Jul 05, 2020 10:09 pm
Forum: Hotspot mode
Topic: jumbospot not needed with opengd77
Replies: 5
Views: 3514

Re: jumbospot not needed with opengd77

The OpenGD77 firmware incorporates code that turns a GD77 into the radio portion of a simplex hotspot, attached to a Raspberry Pi computer (like the pictured ZeroW) via the USB connection - same cable used for programming the radio and updating it's firmware. Since it's a radio implemented with actu...
by kd2lh
Fri Jul 03, 2020 11:43 pm
Forum: New members must post here first
Topic: Thanks to admission
Replies: 3
Views: 1943

Re: Thanks to admission

Hello Carlo, and welcome to the project and this forum.

Try the OpenGD77 firmware. It's remarkable how much better this is for Amateur Radio usage.

Marc
by kd2lh
Tue Jun 30, 2020 1:57 pm
Forum: New members must post here first
Topic: DL9SEC
Replies: 2
Views: 1567

Re: DL9SEC

Welcome to the project, and a great forum.
by kd2lh
Tue Jun 30, 2020 1:56 pm
Forum: New members must post here first
Topic: Hello
Replies: 2
Views: 1421

Re: Hello

Hi, and welcome to a great project. You'll find that Roger and the team's work is of very high quality, and that the firmware load process is reliable and solid. Just follow the directions to set things up properly on your computer. There are a number of major improvements in the way you configure c...