Ben KF7VZR (got that from a June 22 message) wrote... ... Deviation is important. If it's too high (within limits) nearby stations may still be able to decode...
I've noticed two problems with my latest RTrak installation: (1) My 2m voice rig occasionally picks up the beacons from the RTrak when I'm tuned to 145.390...
... Are you set up for dual frequency operation? Â That could cause what you are describing. Â There is also the chance that your mobile might not have very...
... you are describing. There is also the chance that your mobile might not have very good adjacent channel rejection and you're hearing a harmonic. Yep....
We've got 4 Rtrak-HAB units. I had no problems during testing, but the chase team reported the units did not transmit a lot of data during the flight. Tonight...
Hello, how I can change the frequency of my RTrak-HAB, the frequency I have 144.390 default is not used in Europe, I tested with configuration software and...
... There's a bug. We discovered it in March, still waiting for a fix. The unit will not function unless it is allowed to TX on 144.390 on the first...
If there's an actual firmware bug it would be on my end, but I haven't touched the OT1+ code in a while. I can't find an RTRAK or other OT1+/MX146 combination...
Scott et All, It always seems that I am sold out and never have any units left for my own use, but let me see if I have something I can send you for testing....
... The problem we have is that the unit will not transmit unless one of the frequencies in use is 144.390 (I haven't tried 144.39 as anything other than the...
Jason (KE4NYV), Just wanted to let you know that we have used the dual freq option on several flights without a problem. Barry VE6SBS bear.sbszoo.com From:...
And if you change the primary frequency to something else it doesn't work? There shouldn't be anything special about 144.39. Maybe there's a glitch relating...
... Correct. ... I don't recall if I did any testing related to that. Since they're all configured for flight, I probably won't mess with them until after our...
Got some RTrak-HAB models that worked and have been on the shelf for several months. I built new packaging (to allow for the very position sensitive GPS...
Jason, Does the antenna have a built-in LNA? Â If so, do you know what voltage? Â The RTrak-HAB induces a +3.3V voltage through an inductor onto the RF feed to...
... It's the stock amplified patch antenna. I left them on for a few hours last night with no success. I turned one of them back on this morning and it...
When I get stuck I add a serial terminal to the equation to see what is going on Last one was a flat GPS back up battery - Andrew - ... From: lists@... ...
... Yeah, that was on my to-do list this morning. ... There is no external backup battery on this unit; I don't know what's inside the can. I know the GPS18 I...
Does the GPS get stupid if the antenna is mounted on top of metal? I've fabricated a 3/4" square aluminum bracket that the antenna sits on to keep it oriented...
Well, after repeated powerup/shutdown cycles, sometimes with a disconnect of the GPS data jumper thrown in, the units all finally locked. Then I put all 4 of...
Yeah they take a bit to find out where they are - But 30 mins is probably a bit long - Andrew - ... From: Jason KG4WSV To: RTrak@yahoogroups.com Sent:...
With the Compernicus GPS chipset, you should be seeing a cold lock of 30 seconds or less, with a good view of the sky. In a few instances I saw a little...
... yeah, you know, facing up? like so: http://www.eng.uah.edu/~jdw/aprs/rtrak-package.jpg ... Like I said before, the stock amplified patch antenna. -Jason ...
... 4 units. ... I didn't see any description of the blink patterns (or a schematic) in the manual. The blink pattern looks ike 3 blinks, with the delay ...
... The antenna IS facing the sky. I've already been through a flight with these units with unreliable operation because they were facing the horizon. This...
