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Vintage Tape (Audio), Cassette, Wire and Magnetic Disc Recorders and Players Open-reel tape recorders, cassette recorders, 8-track players etc. |
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Thread Tools |
19th May 2020, 12:41 pm | #21 |
Nonode
Join Date: Jan 2016
Location: Stafford, Staffs. UK.
Posts: 2,532
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Re: Computer Cassette Recorders
Regarding the auto stop issue. This may be related to the tape counter not running. I have seen one design where there was a magnet mounted on the wheel that drove the tape counter such that as it rotated it operated a reed switch. The control system would detect the lack of pulses from the reed switch and stop the player. When in use, you could actually hear the reed switch ticking.
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19th May 2020, 4:32 pm | #22 |
Dekatron
Join Date: Jun 2015
Location: Biggin Hill, London, UK.
Posts: 5,208
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Re: Computer Cassette Recorders
TRS-80 was a name used for all sorts of Tandy computer products (it came from 'Tandy/Radio Shack (Z)80', the Z80 being the processor in many of their computers). Yes, they badged some cassette recoders 'TRS-80' too, they were suitable for use with their computers.
But there should be another model number on it, either CTRnn (Cassette Tape Recorder) or CCRnn (Computer Cassette Recorder). I can see if I have any information (like a circuit diagram) for it if you post the model number Bit of trivia... The TRS-80 machines had a 5 pin DIN socket for the cassette interface. Ground on pin 2, the signals on 4 and 5 (I forget which is input and which is output) and motor control on 1 and 3. The same pinout was used on the UK Dragon computers (not too surprising, they were similar to the TRS-80 Color Computer, both being based on the same Motorola application note for the 6883 SAM chip). And on a very well-known machine. The IBM5150 (original IBM PC). |
20th May 2020, 4:12 pm | #23 |
Hexode
Join Date: Dec 2012
Location: Worcester, Worcs, UK.
Posts: 257
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Re: Computer Cassette Recorders
Radio Shack TRS-80 / CCR-81 Model 26-1208A written on the bottom of the deck
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20th May 2020, 4:23 pm | #24 |
Dekatron
Join Date: Jun 2015
Location: Biggin Hill, London, UK.
Posts: 5,208
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Re: Computer Cassette Recorders
Right... I know that unit, I think I have one somewhere.
I found the user manual on-line somewhere. It includes the circuit diagram but no other service information. If you want it, I can send you a copy (just PM me with your e-mail address). |