I flew the new HAB version of RTRAK at GPSL on July 30, 2011. I am happy to report that Serial #0001 performed perfectly for the complete flight. Balloon...
We have decided to do a Black Friday Sale, starting today and going until midnight tomorrow (Friday). Many of our popular products are on sale and in stock! ...
I have two RTRAK-HAB's. One of them works great and have had a flawless flight. The second one is giving me fits. When I first received the modules, I was...
Are both RTrak programming setups identical? In other words, are both units no longer installed in different capsules with different antennas attached? Or did...
I have tried a dozen things to assure rf isn't the problem...but I did remove the SRB MX146 module a few times between when I first configured the RTRAK and...
There's no problem removing the MX146 and operating the tracker without it and have done so countless times while helping Jason finalize his design (as long as...
As we come towards the end of the year, we are working on end-of-year inventory. We have three brand new RTrak-HAB units in stock and ready to ship! These...
I would like to commend Jason and his team for resolving a RS 232 communication problem with my RTRK-HAB. In less tha a week my unit was back in my hands,...
Mike, Glad to hear it made it back OK! Thank you for the kind words! Merry Christmas! Jason Rausch - KE4NYV RPC Electronics, LLC www.rpc-electronics.com ... ...
RPC Electronics, LLC is proud to announce a new product for the APRS community! The MX14x Test Fixture is a full feature test bed for testing all versions of...
Is tere a recommended audio level for the -HAB unit? The manual shows about 50%, the first unit I opened shows about 10% (2 steps from the left). I figure this...
Jason, I really need to make a change to the manual. Â Let me explain... When we do final checks, we set the deviation for right at 4 KHz. Â This seems to be...
... OK, this should probably stay at the second tick, since anything higher distorts. Now my problem is that it won't transmit anywhere other than 144.39. I've...
We finally have MX145H modules back in stock and they are ready to ship out now. http://rpc-electronics.com/rf.php Thanks and please emails us with any...
Hello, I'm preparing my first balloon launch and trying to decide on antennas for the mobile ground station as well as the balloon. I'm a new ham, and nervous...
350 mW will be fine for this distance with most antenna configurations. On one of our balloon flights, we hit a digi >250 miles away with 350 mW going into a...
Hi Ben, Welcome to the world of High Altitude Ballooning. What mode is this for? APRS? if so then of course you want the antenna on the balloon to be...
By far the most reliable antenna we have used in terms of RF, mechanical reliability, longevity, etc, is a 1/2 wave dipole made from tape measure stock. The...
Ben, Another antenna that works and can survive many flights is a 450 ohm ladderline 2M antenna. You can attach a BNC connector to the antenna and then have...
Something to keep in mind is the temperature rating for the insulation on the exposed material, and the fact that the payload will experience various amounts...
409
James Ewen
ve6srv@...
Jul 31, 2012 7:39 pm
There's an extremely robust antenna that will work very well for that 25-30 mile range listening for that pip-squeak 350 mW signal... It's called a 1/4 wave. ...
Hi Ben Most people use either a simple upside down 1/4 ground plane, vertical dipole or wire J-pole on the balloon. All these give good radiation patterns...
... Hi Ben Most people use either a simple upside down 1/4 ground plane, vertical dipole or wire J-pole on the balloon. All these give good radiation patterns...
Hi Ben Most people use either a simple upside down 1/4 ground plane, vertical dipole or wire J-pole on the balloon. All these give good radiation patterns...
Thank you all for your advice! I didn't expect so many responses, all of which have been great. Jason, what teflon coax are you using? Can you recommend a...
... Some we recovered from wiring harnesses (from a blackhawk maybe?) that were donated to the university. I think it's RG142, which is sort of a double braid...
