StratologgerCF, RRC2, RRC3, bigredbee just to name a few.
Check out the updated Marsa54L, and the associated MarsaNet products. Good stuff.
Wow, that Eggtimer Quark looks like a good deal. And I thought the Adept 22 was cheap. How's the performance on the Quark? and how long has Eggtimer been around?
The integration of MarsaNet modules, wireless pyro functionality, etc. My explanations won't do it justice. Check it out.
You have to build the Quark. Outside of that, good Rf resistance at least with testing on the ground. A 2 watt dog tracker took out two Adept 22's and resulted in this:
https://tripolipeoria95.com/uploads/OMG5.jpg
Eggtimer has been around I believe more than two years. Kurt
Ouch!
So, by "RF resistance" I assume you mean resistant to RF interference? There's another term in radio, "Radiation Resistance" that comes up in antenna performance, and your wording struck me as ambiguous.
I like that all their products are kits, I like working with electronics. I'll have to order a few...
That MarsaNet system is interesting, it would be nice to see a telemetry module for the 70cm band though. I've never been particularly enamored by the use of the ISM and other license free bands. Too many limitations, and not enough room for experimenting.
Yes,
Touching the opto-isolator chip with a handi-talkie antenna and blasting it with 5 watts of Rf energy. Only succeeded in changing the tone of the beeping. Putting the H/T next to the Quark in ready mode did nothing to it.
Specifically, no resets or spurious popping of the ematches. Resistance to stray Rf interference is the term I guess I should have used.
If one encloses their tracking device entirely in their rocket, antenna included, is a different issue. Can be done but the bay needs to be radio-lucent. Kurt
Kurt
All kinds of things. Homebrewed transmitters, Amateur television, transmission at power levels greater than what part 15 allows, the chance to use radio spectrum that isn't used by everyone and their brother, the list goes on and on...
Also, since I hold the highest level of Ham license, I might as well use it...
900 Mhz is shared spectrum with Amateur radio. You can do all those things there, and antenna's are smaller....
N2AFU (also Extra Class.....)
So, do you do any radio for its own sake?
I've only been at launches here in MN, mostly with MASA, where most folks aren't very electronically inclined, and almost no one is using electronics of any kind. When you say 70cm is more crowded, are you talking about crowded with rocketry users in that immediate area, or is that a general statement on the band's usage?
What frequencies did you conduct that test at? Did you take note of the wire lengths in that setup?
70cm, 150mhz (MURS dog tracker frequencies) and 2 meters. Wire length? Heck I had the antenna right next to Quark right out in the open.
It was a down and dirty test to assess any gross incompatibility. I'd still recommend using contained bare ematches in the rocket and testing by turning everything on and letting the rocket sit outside for 30 to 60 minutes...........
Unless one already "knows" the devices being used play well together. For instance, the Raven flies fine with a low powered 70cm Beeline GPS sitting next to it. I and others have done that a lot. Ask Greg Clark (he makes and sells them)
Johns Marsa 54 (in its various iterations) I hear is a very robust device.
Kurt
Thanks for sharing. I asked about wire length because wires that are any multiple of 1/4L are likely to start acting as an antenna. I've got a pair of Adept 22s, but I've never done such a test with either of them.
The BRB standard is something around 15mW. There is a 150mW RDF tracker and a 70cm GPS tracker that is 100mW if the HP option is ordered.
Also has a 2M 5 watt tracker that I believe has adjustable output. Kurt
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