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...
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sdrumm_98
Oct 26, 2012 3:02 am
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...
440
lists@...
ke4nyv
Oct 26, 2012 12:41 pm
... 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...
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sdrumm_98
Oct 28, 2012 1:56 am
... 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....
442
Jason KG4WSV
joeuser66
Nov 9, 2012 3:21 am
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...
443
sixmeterea
Dec 1, 2012 3:24 pm
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...
444
Jason KG4WSV
joeuser66
Dec 1, 2012 4:24 pm
... 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...
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jasonbunwin
Feb 26, 2013 8:49 pm
Have you fixed the bug yet? Jason Unwin Hewitt, TX...
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Jason KG4WSV
joeuser66
Feb 26, 2013 9:30 pm
... I haven't; I'm another Jason waiting for a fix. You want the other Jason who makes the RTrak. -Jason kg4wsv...
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Scott Miller
n1vg
Feb 26, 2013 10:04 pm
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...
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Jason R
ke4nyv
Mar 5, 2013 3:38 pm
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....
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Jason KG4WSV
joeuser66
Mar 5, 2013 5:49 pm
... 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...
450
Barry Sloan
ve6sbs
Mar 5, 2013 6:36 pm
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:...
451
Scott Miller
n1vg
Mar 5, 2013 10:45 pm
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...
452
Jason KG4WSV
joeuser66
Mar 6, 2013 12:35 am
... 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...
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Jason KG4WSV
joeuser66
Mar 26, 2013 11:15 pm
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...
454
ke4nyv
Mar 27, 2013 12:41 pm
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...
455
Jason KG4WSV
joeuser66
Mar 27, 2013 1:04 pm
... 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...
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Andrew Rich
vk4tec
Mar 27, 2013 1:05 pm
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@... ...
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Jason KG4WSV
joeuser66
Mar 27, 2013 1:10 pm
... 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...
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Jason KG4WSV
joeuser66
Mar 27, 2013 1:49 pm
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...
459
Jason KG4WSV
joeuser66
Mar 27, 2013 4:11 pm
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...
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Andrew Rich
vk4tec
Mar 27, 2013 7:30 pm
Vertically ? What sort of gps antenna ? I suffer from multi path off my tin roof but that is massive Sent from my iPhone Andrew Rich...
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Andrew Rich
vk4tec
Mar 27, 2013 7:30 pm
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:...
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Jason R
ke4nyv
Mar 27, 2013 7:37 pm
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...
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Jason R
ke4nyv
Mar 27, 2013 7:39 pm
That should have been "Copernicus" GPS chipset....
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Jason KG4WSV
joeuser66
Mar 27, 2013 8:08 pm
... 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 ...
465
Jason KG4WSV
joeuser66
Mar 27, 2013 8:11 pm
... 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 ...
466
Patrick Wood
ve3wst
Mar 27, 2013 8:18 pm
That may be your issue... Up to those antennas should be horizontal to the sky.. p...
467
Jason KG4WSV
joeuser66
Mar 27, 2013 10:07 pm
... 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...
