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Model Forum / General / Rockets / January 2007Rocket Transmiters
I have access to LUNARS RocketHunter reciever which is tuned to various 219Mhz frequncies.I tried to buy a transmiters with no luck. RocketHunter is attempting to make more transmiters (they say they lost a supplier) AND Communication Specialists say they can't sell me a unit in the USA, temporaraly. I've gotten to the point wher I'm sick and tired of being unuable to find a rocket in the field. Any Suggestions? Rocketreer in Rodeo > I have access to LUNARS RocketHunter reciever which is tuned to various > 219Mhz frequncies.I tried to buy a transmiters with no luck. [quoted text clipped - 4 lines] > > Rocketreer in Rodeo Try a Marshall tracker unit - they're used for falconry mainly, but are very popular over here in the UK. Very tough kit and well-respected. G. > I have access to LUNARS RocketHunter reciever which is tuned to > various 219Mhz frequncies.I tried to buy a transmiters with no luck. [quoted text clipped - 3 lines] > sick and tired of being unuable to find a rocket in the field. Any > Suggestions? Wait for RocketHunter to sort out their supply problem. There is nothing better on the market than their kit. Chris  SignatureChris Eilbeck MARS Flight Crew http://www.mars.org.uk/ UKRA #1108 Level 2 UYB Tripoli UK Member #9527 LSMR > p...@junglevision.com writes: > > Any > > Suggestions?Wait for RocketHunter to sort out their supply problem. There is > nothing better on the market than their kit. Except for the Beeline, which is actually legal with the FCC for rocket use, and can be fitted for GPS. I'm not affiliated with them, just a satisfied customer. Mike Fisher TRA 7698 L3 >> p...@junglevision.com writes: >> > Any Suggestions? [quoted text clipped - 4 lines] > rocket use, and can be fitted for GPS. I'm not affiliated with > them, just a satisfied customer. If they just supply the transmitter and you're expected to use any random receiver and antenna you can get your hands on, they'll never give as much range as pulsed carrier systems like Walston, Marshall and RocketHunter. The ultimate performance comes from the receiver and receive antenna, not the beacon. Chris SignatureChris Eilbeck MARS Flight Crew http://www.mars.org.uk/ UKRA #1108 Level 2 UYB Tripoli UK Member #9527 LSMR I agree! If you want the "ultimate" performance, then get a Walston. The size of the transmitter coupled with the sensitivity of the receiver make it the ultimate performer. But that "ultimate" performance comes at a cost. The TX costs are roughly 2-3x that of the BeeLine transmitters, and a 16 channel recevier costs $499 compared to a very capable dual band ham transceiver (that you can use for other things!) at around $230. So, like most things, it's a tradeoff of price v. performance. In this case, the BeeLine tx has been proven by hundreds of users to be 'good enough'. Why throw away $$$s on performance that isn't necessary? -- Greg, BigRedBee LLC > ultimate performance comes from the receiver > and receive antenna, not the beacon. > > Chris > -- bigredbee wrote: >I agree! If you want the "ultimate" performance, then get a Walston. >The size of the transmitter coupled with the sensitivity of the [quoted text clipped - 3 lines] >compared to a very capable dual band ham transceiver (that you can use >for other things!) at around $230. How much does your RX distance (particularly on the ground) improve when using a sideband / cw receiver instead of FM? Out of curiosity, what power output are your devices running? Glen, kc0iyt That's an interesting question -- I've never tried with a sideband / cw receiver -- I'll put it on the list of things to do this summer. power output? +12 dBm. -- Greg, K7RKT > How much does your RX distance (particularly on the ground) improve when using > a sideband / cw receiver instead of FM? > > Out of curiosity, what power output are your devices running? > > Glen, kc0iyt > I agree! If you want the "ultimate" performance, then get a Walston. > The size of the transmitter coupled with the sensitivity of the [quoted text clipped - 8 lines] > 'good enough'. Why throw away $$$s on performance that isn't > necessary? For a given range, better pathloss capability gives a better certainty of recovery. Don't get me wrong, your stuff looks good but for me, only selling to licensed hams is a big put-off and would need to be factored into the cost of ownership. I have used Walston, RocketHunter and Marshall to find rockets I'd never have found with a 10mW beacon and a FM receiver. So I'm using a hybrid system, pulsed FM beacon with a good but not the best CW receiver and a good antenna. Chris SignatureChris Eilbeck MARS Flight Crew http://www.mars.org.uk/ UKRA #1108 Level 2 UYB Tripoli UK Member #9527 LSMR > I have access to LUNARS RocketHunter reciever which is tuned to various > 219Mhz frequncies.I tried to buy a transmiters with no luck. [quoted text clipped - 4 lines] > > Rocketreer in Rodeo Like a Walston or something? What's a Rocketreer doing in a Rodeo? ;-) It appears that manufacturers match their recievers to their transmitters, so a Walston won't work terribly well with a RocketHunter and vise versa.....it *may* work, but not as well. So if you want to buy a tranmitter you will be prompted to buy the accompanying receiver. Chuck >> I have access to LUNARS RocketHunter reciever which is tuned to various >> 219Mhz frequncies.I tried to buy a transmiters with no luck. [quoted text clipped - 15 lines] > > Chuck Not totally correct In that one could buy an Amateur Radio receiver that will listen to anything. Only problem is that they are over $500.00 with the proper frequencies and filters. A simple scanner won't work with the above and I think they do that on purpose. The RH and Walston receivers are still cheaper than a full featured Amateur one though. I believe that Rocket Hunter and Walston uses a CW filter and some oddball frequencies. I'm planning on getting a ham license and my ICOM T-90A won't receive the RH or Walston but it will work with the Beeline. The tech license is a piece of cake to get and the Beeline will actually work with a simple handheld scanner. >>> I have access to LUNARS RocketHunter reciever which is tuned to various >>> 219Mhz frequncies.I tried to buy a transmiters with no luck. [quoted text clipped - 29 lines] > is a piece of cake to get and the Beeline will actually work with a > simple handheld scanner. My bad, I thought he was looking to buy a transmitter to work with a receiver..... Chuck > I have access to LUNARS RocketHunter reciever which is tuned to various > 219Mhz frequncies.I tried to buy a transmiters with no luck. [quoted text clipped - 4 lines] > > Rocketreer in Rodeo L.L. Electronics Electronics http://www.radiotracking.com/ http://www.radiotracking.com/xlf.html |
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