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Recent content by MadisonMod

  1. MadisonMod

    Receive loss

    The radio does receive properly without the amp. I will see about ordering a new relay for the amp. Thanks much
  2. MadisonMod

    Receive loss

    Hello. Can someone explain why my receive goes quiet after transmitting on my radio? If I click the microphone button on and off, then the receive comes back. I have an amplifier in line, maybe something is going out on the amp ?
  3. MadisonMod

    Am hum in receive

    Hello everyone. So I had to move 2 capacitors to read the uf and voltage to complete schematic with board # and values. c111 .1uf 16v and c93 .1uf 16v capacitors. I plugged the radio back in and turned unit on, the hum is gone. I will start the process of replacing each cap and checking...
  4. MadisonMod

    Mobile radio power voltage

    Thanks. I'm checking them out. I appreciate it
  5. MadisonMod

    Mobile radio power voltage

    Sorry connected
  6. MadisonMod

    Mobile radio power voltage

    No problem with regular charging system. I contacted my radio straight to the battery and the voltage is 12.6 .the radio would perform better at 14.5 to 15 volts.
  7. MadisonMod

    Mobile radio power voltage

    Hello everyone. Does anyone know if it's possible to up the voltage in a vehicle for a mobile radio? I know vehicles are considered 12 volt and amp hr depends on size of battery, but I would like to up the voltage similar to using a power supply. Maybe its possible to design something with...
  8. MadisonMod

    Transmit pattern

    Hello everyone. Is it possible to Calculate the DB gain of you're signal from an antenna, or how much gain an antenna is producing?
  9. MadisonMod

    SWR/RF power meter calibration

    Hello. I have a Delta PSM1000W. What is the process for calibrating this meter? How do I check and see the accuracy?
  10. MadisonMod

    K30 magnet mobile antenna

    Thank you sir. I will try and let you know.
  11. MadisonMod

    K30 magnet mobile antenna

    Any idea what size? The antenna specs say Thank you for the information. What capacitor would you recommend that I put back to make antenna work properly?
  12. MadisonMod

    Transmit pattern

    Okay. So I used mfj antenna analyzer today and the antenna was reading 80 ohms . I changed the horizontal angle of antenna a few degrees and rechecked. I ended up moving it about 1/4 " and now the analyzer is reading 50 ohms. It also changed the 1.35 swr down to 1.2. Now channels 1 & 40 are...
  13. MadisonMod

    Transmit pattern

    Do you know what I can put back on it ?