cell phone coverage from North site - Northern Colorado Rocketry

This topic has 15 replies, 6 voices, and was last updated 19 years, 3 months ago by denverdoc.

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May 30, 2006 at 12:51 pm #42336
Warren B. Musselman
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In High Power Rocketry I believe, I saw an article about radio controlled rocket recovery by chute steering… I’ll dig those out today and track down the article for you.

Warren
May 31, 2006 at 2:46 am #42337
k9tim
A newb question here- does anyone mess with APRS?
I don’t know much about APRS (Automatic Packet Reporting System) via Amateur (Ham) radio but some of my friends are really into it. GPS interfaced with 2 meter or 70 cm amateur radio repeaters…..

Just curious.
May 31, 2006 at 4:03 am #42338
denverdoc
Tim,

The GPS i bought uses packet encoding–ran into a last minute snag. the Yaesu uses this really weird 4 contact mini jack (both sp/mic share the same plug) so waiting on a 2 dollar part. I think the system is a little long in tooth but has much to recommend it still for rocketry. I will likely implement using a direct feed to the sound card on my laptop and forego the TNC entirely. Was hoping to test this upcoming w/e at Hartsel, but for want of a 2 $ part, will likely see first use at LDRS.
JS
May 31, 2006 at 4:33 am #42339
Warren B. Musselman
Moderator
I’m interested in APRS, but haven’t had a ham ticket since 1976 when my general lapsed and I sold all my radios (electric guitars and girls had a serious impact on my radio involvement at the time). Now I’m fooling around with a bunch of little projects in the 5-10 mW range in 433Mhz and a 900-912Mhz Spread Spectrum chipset that does auto-retry, packetization, etc. with guaranteed data delivery up to 150K baud up to 7 miles Line of Site. The prototype will be flying in July most likely.

APRS is the next step up – I’m going to take the test sometime in the next month or two and get up to speed on it.

Warren
May 31, 2006 at 11:08 pm #42340
k9tim
Well the licensing has changed radically..

No more Novice or Advanced. Tech, General, and Extra are it. The CW req is 5wpm straight across the board.

I haven’t been too active in the hast few years but a friend who is an ARES coordinator among other things tells me it looks to be changing again possibly.

I only hold Tech Plus (I have my 5wpm CW) and he claims I will be Grandfathered in as a General if this happens.

Warren, if you need the test hotline number let me know (test times and locations). I have it here somewhere and I think it’s still active.

@denverdoc- I know that connector very well! I have one on my VX-5r that I use all the time. I used to run packet way back when, but then the web got big and I couldnt deal with the slow speeds for what I was doing.
Started to play with Slow Scan TV at that point. It’s all fun stuff though!
June 1, 2006 at 1:30 am #42341
denverdoc
… with guaranteed data delivery up to 150K baud up to 7 miles Line of Site. The prototype will be flying in July most likely.

APRS is the next step up – I’m going to take the test sometime in the next month or two and get up to speed on it.

Warren

Hey thats flamin fast, as I understand it the APRS is pretty bandwidth starved–does maybe 9600baud–which is why I called it long in tooth. But given most of the current GPS consumer issue units lose lock at high speeds, it moot. If the July launch doesn’t conflict with LDRS, I’ll bring the Beeline out, we can fly it a couple of times,and compare notes.
JS
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