Those old cell phones. Anyone turn one into a transmitter? 
:lol:
:lol:
"Bagphone" mods...
- Thread starter poltergeisty
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I was musing while half asleep one night if there would be a way to make two way radios from them. Could you bypass the dialing and just talk?
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N_Jay
Guest
Those old cell phones. Anyone turn one into a transmitter?
No need, it's already a trasnmitter. :twisted::twisted:
N
N_Jay
Guest
Except you probably can't get the TX and RX on the same frequency.
Best luck hacking would be an old one.
As the electrics get more integrated, hacking gets harder.
Kind a unless project with a low likelihood of success.
And would likely cause some havoc on the freqs even if you could.
Maybe the antennas could be converted over for 800MHz scanning use.
Want to get real vintage:
THE MOBILE TELEPHONE IN BELL SYSTEM SERVICE,
Want to get real vintage:
THE MOBILE TELEPHONE IN BELL SYSTEM SERVICE,
I have detailed plans on doing it with I think old bag phones or its the brick phone. Powerful little suckers. I have 5 bag phones here.
Definitely not a legal thing to do, but wondering if anyone has known someone to have done it.
http://usera.imagecave.com/Poltergeist/bagphone.JPG
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N_Jay
Guest
If you have detailed plans, then you should know what model (and sub-model) they apply to.:roll:
I would guess the one you have (the thin type) is way to far down the integration curve to be worth playing with.
Best luck would be with the early "thick" units with multiple boards inside, or better yet an only "DynaTAC unit.
That's a cool page. The first ones used a selective calling system, not unlike the principle behind the "SELCAL" system used in VHF Aircraft radios so a controller or whatever can call a specific aircraft.
Check out the antenna pictured with the GE DTD/DTO unit. Looks like the base that I installed on the Santa Fe a month or two back. Somebody noticed it in the pics in my install thread and recognized it for how old it was.
That doesn't mean I know if they will work or not... and what caveats apply, etc.
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N_Jay
Guest
No way!!
You meant two systems developed to do about the same thing, by the same company around the same time use the same technology??
Who would have thought?:twisted:
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N_Jay
Guest
Well, why don't you post the plans and let some people give it a guess?
Hack, I might have the right model sitting in the basement.
(Large MiniTAC unit, non diversity, 666 Channels)
Holy Crap! I nearly fell out of my chair laughing at that one. Our neighbor only does her's about every 6 weeks. Iv'e got and old 6XX something, nearly identical to the 918 that I also have, and my Mother has and old 918 too. I could have three bits of "Hacking" fun this summer!:evil::twisted:
:lol:
:lol:
N
N_Jay
Guest
You don't want to know what I paid for it!
rfradioconsult
Member
The most common conversion involving cellular bag phones was to gently place the transceiver and accessories gently in the trash can and re-use the bag for something useful.
Thanks for the link to mobile phone history; a real walk down memory lane for this old two-way guy. I had several of those units including a TLD-1100 IMTS until I went to work in the cellular business in 1986 for a predecessor to Verizon. In the early days of IMTS you were charged a flat 25 cents per call then once the developed per-minute billing it was 25 cents per minute. FYI the mobile id that was programmed into the mobile was the area code 3 digits and the last 4 digits of the subscriber.
Mobile telephone "hacking" was a problem; mobile subscribers could have their mobile number published in the phone book so someone could just look and come up with a valid subscriber's number and they just had to program the jumpers on the supervisory board and start making calls. Some even routed a cable to the front and installed four 0-9 selector switches and just dialed in the number you wanted to send as your mobile identity.
Thanks for the link to mobile phone history; a real walk down memory lane for this old two-way guy. I had several of those units including a TLD-1100 IMTS until I went to work in the cellular business in 1986 for a predecessor to Verizon. In the early days of IMTS you were charged a flat 25 cents per call then once the developed per-minute billing it was 25 cents per minute. FYI the mobile id that was programmed into the mobile was the area code 3 digits and the last 4 digits of the subscriber.
Mobile telephone "hacking" was a problem; mobile subscribers could have their mobile number published in the phone book so someone could just look and come up with a valid subscriber's number and they just had to program the jumpers on the supervisory board and start making calls. Some even routed a cable to the front and installed four 0-9 selector switches and just dialed in the number you wanted to send as your mobile identity.
N1GJB
Member
I hit an "everything you can carry for $1" sale at a local outdoor flea market and picked up a bag phone. The guts of the bag phone are still in my parents basement about 10 years later. The bag saw new use as a protective case for my strobe dashlight. Its still around somewhere...
jparks29
John McClane
Older Novatel models could have the ESN changed via the keypad, and you could manually enter a freq and tx/rx on that freq. through a service mode.
The /\/\ bag phones are useful for their FA, which is 3W, and works great in a sweeping jammer circuit that covers/jams the entire 800 Mhz spectrum.... A traxar 30W 800Mhz FA works wonders too..
The /\/\ bag phones are useful for their FA, which is 3W, and works great in a sweeping jammer circuit that covers/jams the entire 800 Mhz spectrum.... A traxar 30W 800Mhz FA works wonders too..
It was simply a matter of jumping a couple of pins on the programming connector. Once you got into test mode you could enter whatever channel you wanted then monitor or transmit.
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