That's what I was thinking of. Thanks!
A properly-designed extension cable should have minimal loss. That said I use wire antennas on the flight side because they're lighter and more robust and I haven't had any range issues.Just curious what kind of performance 'hit' inserting that cable assy would be (i.e. transmission range attenuation, etc.).
Derek, I've seen some short (<12") RP-SMA cables that serve to separate the actual antenna from the jack on the transmitter. Fatalist that I am, I could foresee a situation (and have seen some comments out in cyberspace) about jarring forces on the antenna cracking the circuit board on the XBee. I was thinking that, placing the antenna in the nose cone with a 'loop cable' between it and the actual XBee (looped 360deg and then connected to the XBee) would allow for *some* separation (and shock absorbency) from the two components if, perchance, the vehicle came in hard (probably nothing would save it if it came in ballistic - but, if a canopy fouled and it (again) came in 'hard') and having that 'loop cable' would (maybe) save the XBee.
Just curious what kind of performance 'hit' inserting that cable assy would be (i.e. transmission range attenuation, etc.).
-- john.
ok so the only thing I need to do to the XBEE modules is change the baud rate to 115200 correct?
Is there a current parts list? Ive been trying to follow along but got lost with all the upgrades and versions. About what price is the total for the whole package?
the rule of thumb we use at work is .5 db per connector. The cable loss should be pretty close to 0 if it is decent.
but Mike offers the best solution: use the wire antenna version of the xbee if you are worried about the rp-sma connector getting damaged.
Ok thanks! One more question, how do you know when the gps is locked? As if know the only LEDs that turn on are the green and lower red.
Ok thanks! One more question, how do you know when the gps is locked? As if know the only LEDs that turn on are the green and lower red.
the rocket track app will tell you there is a lock.
also, the mini tx has a lock led.
Ok thanks. I'm using a laptop with a Xbee adapter for the RX because I only have apple devices. I take it the lock LED us the red on the top left?
ok. in that case you would need to look at the data to determine if you have a lock. It should be pretty obvious because if you don't have a lock, then you get $gpgga strings with lots of commas with no data between them.
on the mini tx, the lock led is the one by itself near the battery connection.
putty should work. sounds like you have a config problem.
if you changed the rx xbee baud rate to 115200, then use that. otherwise try 9600 and make sure you use no flow control.
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