Internal GPS Mod Tech Support/Q&A
- Thread starter jonwienke
- Start date
- Status
I've finished configuring and function testing (I run each module 15-30 minutes to verify it gets a satellite lock, and verify that it can calculate a reasonably accurate fix) the batch of new GPS modules. They all passed. Now I have to attach the connector plugs and coat the antennas...a project for tomorrow.
When you run the wire to connect the tx to the RX do you run it under the rf shield (closest to the GPS) or over the shield (closest to the screen)?
I found that the GPS makes noise on the weather bands that coincides with the red flash. Not a deal breaker though; just wondering.
Also. Did you make your protective case with clip or find it on Amazon?
Sent from my SM-G930T using Tapatalk
The data line runs along the back of the case from the GPS module through a ferrite toroid to the GPS power switch (which also switches the data line, so that an external GPS can be used when the internal GPS is off), and from the switch between the shield and front circuit board to the RX pad. That eliminates RF noise and interference.
The case came from Scanner Master.
The case came from Scanner Master.
Does anyone know where the 5v power tap is on the BCT15X? I finally got around to ordering my DB9 plugs, and I was looking at the two scanners I wanted to mod. On the first page of this thread you showed the position of an5v source, but it wasn't with a bct15 unit.
Sorry for the bad photo, iPad camera leaves much to be desired.
You're referring to this point, labeled V_SW? I guess I could always get my multimeter and check for myself lol
https://lh3.googleusercontent.com/-...Cw/h1152/1994339676583613084%3Faccount_id%3D0
Hopefully this is a better picture
You're referring to this point, labeled V_SW? I guess I could always get my multimeter and check for myself lol
https://lh3.googleusercontent.com/-...Cw/h1152/1994339676583613084%3Faccount_id%3D0
Hopefully this is a better picture
No voltage on pin 4 V_GPS to pin 5 ground. The V_SW to pin 5 reads 13v
I can find 3v, 6v, 8v, 13v and 20v around the board. Can't find a solid 5v
I stand corrected, I have 5.5v on pin 3 and 7 on the DB9 with 5 as ground
I stand corrected, I have 5.5v on pin 3 and 7 on the DB9 with 5 as ground
I just opened my 996P2, and yah, two completely different animals. So don't fret it, I'll poke around and see if I can find a 5v line to tap. If not, it's no big deal.
Those are RS-232 signal voltages, not usable as power sources.
Yes, in almost the same place as the 996P2, shown in the photos back in page 1 of the thread.
Any pictures of what the 436 looks like after GPS mod? Switch, LED?
Here's some pics of mine.
The little white button on the side is the power switch.
Sent from my SM-G935P using Tapatalk
Attachments
Last edited:
- Status
Similar threads
