Just a reminder that this beacon will fly tomorrow (Saturday) morning starting around 7:30 AM CDT. We expect it to be in the air for 2-3 hours. Two modes...
We had a problem with the APRS system so it didn't show up on the internet. Due to a last minute change to the capsule that held my beacon, the flight...
We were never more than a few miles away from it during the chase so we had line-of-site and were able to hear it well. I was hoping some folks here would...
I'm still running a bunch of ideas through my head. I managed to obtain service manuals for Radio Shack 49 MHz walkie talkies, TRC-501, 503, 505, 509 and 512. ...
Welcome to the group Hi everyone! I stumbled across this group while doing a google search in preparation for experimenting with those old Radio Shack 49 Mhz ...
i have a 49 mhz remote control jeep from new brite. my son lost the remote too it and they dont sell parts. i have a 27 mhz remote and a 75 mhz remote. can i...
You would probably have to adjust the coils that are present, too, as they are frequency dependent. Couldn't tell you which ones as I don't have a schematic....
You can change the crystal to anything you want. Unless the encoding and modulation is precisely the same, you will need the original remote that came with...
Interesting ...... Â Now how do you do that and how do you stay within part 15 ? ... From: Adam E. <gccengineering@...> Subject: [49MHz] The Hobby Of 49...
Don't know the exact year, mid-70's, I think. 49 MHz equipment is AM, FM, FSK, PWM and so forth, there are radio modems, remote control, voice, telemetry, you...
I forgot to mention that both digital an analog encryption has been used on Part 15 49 MHz voice devices for about twenty years too, check out many of the old...
Well, I see that many hams tried to go digital with their home made transceivers, as long as you do not over modulate the signal you should be fine. Digital...
Bypass the input filter and go straight to the modulator, you should be able to get 50 - 100 KHz bandwidth. Kurt ... From: "Adam E." <gccengineering@...>...
... The problem, though, is that digital transmission media require a much better signal to noise ratio than an analog signal. A bit of noise in an analog...
49 mhz has been around for at least 40 years ..... To be leagal you would have to design a system that put out under 10,000 uv per meter  at 3 meters and i...
This is fine but how do you comply with part 15 ? ... From: Facility 406 DM09 <facility_406@...> Subject: Re: [49MHz] The Hobby Of 49 MHz is getting...
Yes, I used to have a beacon in the 90's that transmitted Commodore and similar tapes. My first transmission used the boot cassette from an old Wang at work...
I too still have my retro computers, mainly Commodore 64 (& C16), Atari 8bits, even a TI99/4a and TS1000. I too would be interested in trying this out with...
From what I recall, cordless phones have their own set of rules with references to Part 15. Use Part 15 direct, everything applying to walkie-talkies-baby...
Glad to see I'm not the only crazy one. My oldest computer is a Magnavox from 1969. It's built into a suitcase, the "programs" are some sort of chip on a...
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