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  1. 73's de Edd

    Radio and boosting signal

    When we are on the scene talking to each other on our channel we can hear fine. I use the radio for the fire department, other volunteers seem to have the same problem as me. Light_Chaser . . . . . please confirm the above. He and the other guys are using portable radios !!!! the people in...
  2. 73's de Edd

    DIN type connector issue

    Right . . . on the ODD connector type now. If you are able to correctly relate the wire colors from the remote hand unit to the pin numbers marked on the foil pattern at the camera, It seems like modifying it into male and female PS2 type connectors might be permissible.
  3. 73's de Edd

    DIN type connector issue

    Sir Patrick Andrae . . . . . I find no FOR-FREE schematics or service manual for that old of a unit. Any chance that the mating plugs and jacks of the remote are being the generation one . . . old DIN 5 connectors, as are being shown on my supplement at the far right . OR for a...
  4. 73's de Edd

    Random Audio Playback project

    Stand by a moment while we page your dad . . . . . . But its tech info suggests of just being a one shot short message or repeat mode . . . . http://www.eimodule.com/download/EIM353_ISD1820_Module_Manual_V01.pdf
  5. 73's de Edd

    Linear Actuator Power Requirement

    Sires . . . . . . They are not being the " only phone company in town " on that 750N series of units. Plug in specs of : No-load current<1A Max load current=3A And those puny little batteries seem less feasible. 73s de Edd
  6. 73's de Edd

    Radio and boosting signal

    Sir Light_Chaser. . . . . . . . That unit is not being your magic panacea . . . . Your shown units are using rubber duckie antennas and if using a separate antenna at the house it actually might not be more than a slightly longer 5/8 wavelength whip, possibly with a loading coil. It possibly...
  7. 73's de Edd

    Anyone ever build a DC to AC inverter ? Needs to run on 32v DC

    The MOST important spec I have not seen yet is the WATTAGE that you are expecting on that 120V secondary. A table lamp or . . . . forbid . . . a refrigerator or microwave . . . . .dream on.
  8. 73's de Edd

    DIN type connector issue

    IMPERATIVE . . .that you should have posted the Brand and model number. Maybe only 2 of those wires are active while 3 are used in selecting points of a weighted resistive ladder. That was done on those old wired remotes long before digital sophistication and multiplexing came on the scene...
  9. 73's de Edd

    Repair JoeMeek Three Q Compressor

    Sir JonWanez . . . . . . . . One set of 10,000 words coming up . . .fresh off the press . . . . Here is the unit and the described pots location, with Alpha being a valid manufacturer, but not chiseled in stone for not using other brands as a replacement. Its specific function / use would...
  10. 73's de Edd

    Old silent chap

    Sir Richard . . . . . As far as the presence of the AM detector diode, and if you are finding R326 R 327 R 325 and C324, I feel sure that the a.m. detector diode is hidden within the housing of L310 and that all is well with it. As far as the wire to the dial scale lamp, I might...
  11. 73's de Edd

    Need help rigging Airconditioner thermistor to outwit the dimwits

    How about the brand and model of that brand new depicted unit ? And yes, running refrigerated air conditioners / heat pumps, really sniff up the power.
  12. 73's de Edd

    Amplifier burned, please help to ID parts

    Sir Keks . . . . . . I now see that the principal power transistotrs* / or / FETS * are merely those two transistors per channel, that are mounted on the bottom of the heat sink . . . . with a couple of ancillary heat sensors also being thermally tied in. Pass us the numbers on them* so that...
  13. 73's de Edd

    Need help rigging Airconditioner thermistor to outwit the dimwits

    If all of those are window units , I would certainly not expect the degree of sophistication that you are implying. Probably there is a high chance of a temp sensing capillary line and a linking into an expansion valve . If actually using a thermal strip, modification of the limit of movement...
  14. 73's de Edd

    Old silent chap

    Sir Richard9025 . . . . . Once you find your " floating connection " that you have created within the power supply and have it then supplying power. If no sound is then present, you might reverse yout signal tracing technique with the RCA connector and then place the TV end of the RCA jack...
  15. 73's de Edd

    TDA 7000 FM radio can't tune in any station

    Sir berkekrkn . . . . . . . . Read up on the 7000 chip utilization in this writeup and expect to use the its PCB construction they employed in order to get proper RF operation. As AG mentioned, being built on a breadboard and all spaced out and poorly RF bypassed just will not even start to...
  16. 73's de Edd

    Amplifier burned, please help to ID parts

    Sir Keks . . . . . . . . As Davenn said . . . . that FULL WAVE RECTIFIER BLOCK should be bad. that set of ceramic capacitors are as badly burnt as I have seen. The way they vaporized I would be wanting to use a much higher rating than 100V . . . . .more likely some X2 or Y2 ceramic...
  17. 73's de Edd

    Cheap Motion sensors , chinese I think

    AprilSteel . . . . . . . . Your closeup photo of your unit, precluded picking out fine foil path detail / routing. Refer to this closeup and the app note at the side. Since you have minumized the R factor of the R-C time constant already, just work with halving the C value and make a test...
  18. 73's de Edd

    Car Radio

    Sir ipbr21054a. . . . . . . . On your main connector block / plug at the rear of the radio . . . its a given that BLACK is the ground reference and RED is the main DC power input . CONNECTOR: That reflects continuity by your being able to activate power action to the player. Plus all...
  19. 73's de Edd

    Dryer's heat fluctuates?

    I was in No way involved . . . . You are oh-fish-ully pre warned to beware the wrath of Sir Chris . . . .hee . . .hee
  20. 73's de Edd

    Thurlby PL310 power supply fault

    Sir Paul Ramsbottom . . . . . . . . With my mentioned placement of a load on the output terminals, that should bleed down any static leakage through of voltage fron the Q2-3 darlington pair. If there is still any voltage presence, lift the base drive voltage that comes in from the BLUE dotted...
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