It’s not broken so much as it just has no real use for its original function anymore, like wolf said, far as I know everything is digitized now, so when I turn this on I won’t pick up anything as it uses the old scanner crystals tuned to a specific frequency. So I figured why not try and anything off it to make something actually functional again?scotty101 wrote: ↑Thu Aug 16, 2018 10:47 amIf this device is totally broken and beyond repair, I'd consider turning this in to a Software Defined Radio "scanner".
Strip out the contents and replace with a Pi and a USB SDR module (many TV modules can be used) and install some software to pick up and decode radio frequencies.
I think I might try this. I do have a few more questions...LTolledo wrote: ↑Sat Aug 18, 2018 11:28 amNice pics of the "relic" you have there!
If it were me, I'd take everything out of the case, carefully, I'd save the speaker, the LEDs and some knob, the case of course!
I'd probably save the crystals as well.
Turn the unit to an RPi powered music streamer with LED VU meter display (thus the LEDs)
for that you might need the following
1. Raspberry Pi 3 model B (an alternate will be a Raspberry Pi Zero W)
2. USB sound card (cheapo ones will do fine). An alternate will be a Pimoroni pHAT DAC
3. 5V mono amplifier board (probably around 3W, using PAM8403 chips)
4. DIY VU meter using LM3914/3915 (to connect to LEDs on the panel)
5. 5v 2.5 PSU
6. microSD card 8GB minimum
7. audio app like Volumio (or Rune or moOde, etc)
8. a couple of wires
9. some soldering skills perhaps....(actually definitely!)
its just one suggestion, others might give you more exciting ideas....
Yes this is possible, but you will have to install in an FM Tuner module which will act as a second audio source.Link500 wrote: is there anyway to set it up as not only a music streaming device, but able to switch to a normal radio using an antenna with say a button press?
That is if it were me.... I'd keep the crystals, maybe I might have use for those in future projects...Link500 wrote: ..outta curiosity why keep the crystals? What else could I use them for?
LTolledo definitely lit the fire: "Add more if you like". Throw away my latest post concerning police communication. Why not add a software defined radio (SDR) toolkit after having added the fm tuner module? Like GNU radio or better more user-ready SDR apps? With this, a higly single-band focused scanner from the 70s might get the physical basis for the scanner idea of this millenium? There is not only solutions for FM reception existing. Thre are solutions for even very special radio services including aviation, marine, scientific, amateur radio,LTolledo wrote: ↑Fri Aug 24, 2018 9:59 am...you will have to install in an FM Tuner module which will act as a second audio source.
while you're at it better add a third sound source called "AUX"
c. AUX input (from RCA jack at the back)
you may add one more if you like.
Looking forward to your progress in your build....have fun!
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