Thanks for the help! I tried the method with exposing the internal pad of the pin and it worked / the GPS module gets recognized!
Unfortunately I still don't get a signal from any satellites, but I will try again maybe from a different location than the balcony tomorrow.
GPS (GP-02) kit module fitted in a GD-77
Re: GPS (GP-02) kit module fitted in a GD-77
I'm just curious about how you managed to break the pin. There is no need to lift any of the pins, as although the pins are soldered to the PCB, the pads don't have any connections to them.do1kka wrote: ↑Mon Jun 24, 2024 9:59 pmThanks for the help! I tried the method with exposing the internal pad of the pin and it worked / the GPS module gets recognized!
Unfortunately I still don't get a signal from any satellites, but I will try again maybe from a different location than the balcony tomorrow.
Also the adjacent pins i.e pin 100 is not used, so you can bridge to this pin for added strength, or to pin 98.
The normal method is to attach a small wire between 99 and 100 , bridging 99 and 100 to make a good physical connection, and the same on 97 and 98
But it sounds like you lifted 97 and 99
With the GPS, they are normally quite sensitive but cold start can take several minutes even outdoors. GPS's don't work well indoors
Re: GPS (GP-02) kit module fitted in a GD-77
Follow the instruction to test my GD77 for add GPS module?finally succeed~~
I used a GPS module call GT-U7 for test. It's too big.But it can tell me if I succeed or not.
And I use a N-MOS to switch GPS module ON/OFF.
I used a GPS module call GT-U7 for test. It's too big.But it can tell me if I succeed or not.
And I use a N-MOS to switch GPS module ON/OFF.
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Re: GPS (GP-02) kit module fitted in a GD-77
Another pictures of my mod.
Move the GPS antenna to window side. Try to get the GPS signal.
Move the GPS antenna to window side. Try to get the GPS signal.
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Re: GPS (GP-02) kit module fitted in a GD-77
I get the GT-U8 GPS module(It's very small than GT-U7) from TaoBao.
Then I try to put the module in the case of the radio.
GPS antenna is 8mm*8mm. Need to cut a little bit of the case to fit.
Then I try to put the module in the case of the radio.
GPS antenna is 8mm*8mm. Need to cut a little bit of the case to fit.
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Re: GPS (GP-02) kit module fitted in a GD-77
At last, performing a road test.
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Re: GPS (GP-02) kit module fitted in a GD-77
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Last edited by PU4RON on Sat Jul 20, 2024 2:02 pm, edited 2 times in total.
Re: GPS (GP-02) kit module fitted in a GD-77
Sorry for the late response!VK3KYY wrote: ↑Mon Jun 24, 2024 10:10 pmI'm just curious about how you managed to break the pin. There is no need to lift any of the pins, as although the pins are soldered to the PCB, the pads don't have any connections to them.do1kka wrote: ↑Mon Jun 24, 2024 9:59 pmThanks for the help! I tried the method with exposing the internal pad of the pin and it worked / the GPS module gets recognized!
Unfortunately I still don't get a signal from any satellites, but I will try again maybe from a different location than the balcony tomorrow.
Also the adjacent pins i.e pin 100 is not used, so you can bridge to this pin for added strength, or to pin 98.
The normal method is to attach a small wire between 99 and 100 , bridging 99 and 100 to make a good physical connection, and the same on 97 and 98
But it sounds like you lifted 97 and 99
With the GPS, they are normally quite sensitive but cold start can take several minutes even outdoors. GPS's don't work well indoors
Yeah, unfortunately I didn't bridged the pins because I thought it would be nice to try out if I can manage to solder the cable only to one pin with my solder skills... Which was a stupid idea in the end
And while opening the case again to check the antenna the cable which was connected to the pin ripped it off...Re: GPS (GP-02) kit module fitted in a GD-77
Did you lift the pin from the PCB??
I don't see how you can rip a pin off if it is still soldered to the PCB.
There is no need to unsolder those pins, they are not connected to anything on the PCB except the pad
Or perhaps you tore both the pin and the pad ?
BTW. I normally solder very thin wires to pins and secure the wire to the PCB with glue
I don't see how you can rip a pin off if it is still soldered to the PCB.
There is no need to unsolder those pins, they are not connected to anything on the PCB except the pad
Or perhaps you tore both the pin and the pad ?
BTW. I normally solder very thin wires to pins and secure the wire to the PCB with glue
Re: GPS (GP-02) kit module fitted in a GD-77
I used two active antennas and they didn't work, I didn't get satellite signals. To solve the problem I used a wire soldered into a coaxial cable mesh to serve as an antenna with good results.
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