20 Most Recent
Questions & Answers
My new ICOM ID-5100 VHF/UHF/D-Star radio reboot when keying down at high power only. It will work at low and medium. I checked all the power connections and the voltage is reading a steady 13.9 v.
Sure sounds like a "low volts" reboot due to high current draw.
Are you measuring voltage at the radio itself, after any connector, fuse or circuit breaker? The voltage (at the set) should be slightly different between low and medium power tx. Use a good meter to confirm this.
Is the power supply able to supply the current required at high tx power? Is a current limiter operating? A lead-acid battery in parallel with the PSU might be needed at high power.
At high power setting the radio will probably reset faster than a low power input voltage can be measured with a normal meter, so an oscilloscope might be needed to see the power input voltage as it happens (might be very brief).
Could RF be getting back into the power supply? Does it happen on both bands? Is the SWR good? Is the earth good? How long and how thick are the power wires? Is there any filter on the power supply wires (close to the radio)?
If it's new there will be a warranty if it's a fault in the unit.
Good luck :)
on Apr 28, 2019
Icom ic-756 pro 3.dead spots in TX and RX ,maybe pll ?
If the dial actually shows the 40M frequency, then the likely hood of the PLL not functioning is slim. My guess is that the band pass filter for 40M has a bad relay or steering diode in it. This happens more often than not and is a rather inexpensive repair. I have the same problem in my IC-706, except 20M is affected.
on Jan 12, 2019
Not finding what you are looking for?