Why does my Icom IC-R8500 Receiver turn off by itself?
If your Icom Receiver turns off by itself, the sleep timer may be activated. To deactivate it, turn the power back on, then push the [SLEEP] button one or more times to turn the sleep timer function off.
Why does the main dial not function on my Icom Receiver?
If the main dial on your Icom Receiver does not function, it's possible that the lock function is activated. To deactivate it, push the [LOCK] button for 1 second.
How to select memory channels in another bank on Icom IC-R8500?
If you can't select memory channels in another bank on your Icom Receiver, the bank limit function may be activated, indicated by “BANK” on the display. Push [BANK] to turn OFF the bank limit function, or use [BANK] or [BANK] to select the bank.
Why won't any scan function on my Icom Receiver?
If no scan will function on your Icom Receiver, it might be because [SQUELCH] is open and [?] is selected. Turn [SQUELCH] CW until noise disappears.
Why doesn't programmed scan work on my Icom IC-R8500 Receiver?
If programmed scan and auto memory write scan do not function on your Icom Receiver, it's possible that the same frequencies are programmed into the selected scanning group. Reprogram different frequencies into scan edge channels or select a different programmed scan group.
Why doesn't memory scan work on my Icom IC-R8500?
If memory scan does not function on your Icom Receiver, it could be because all channels are specified as “SKIP” channels in the selected bank. Turn OFF the automatic skip function or release the “SKIP” setting for 2 or more channels in the selected bank. It could also be that no memory channels have been programmed in the selected bank, so program 2 or more channels.
Why doesn't select memory scan work on my Icom Receiver?
If select memory scan does not function on your Icom Receiver, it's because two or more “SEL-CH” are not specified in the selected bank. Set 2 or more channels as “SEL-CH” in the selected bank.
How to fix Icom IC-R8500 if power does not turn on?
If your Icom Receiver power doesn't turn on when you push the power button, there might be a few reasons. First, check that the DC power cable is securely connected. If it is, a fuse might be blown; check for the cause and replace the fuse. When using an AC adapter, ensure the jumper connector is connected to the [DC13.8V] jack on the receiver's rear panel. Also, make sure that if you're using an external 12 V DC, it is connected to the [DC13.8V] jack, as the [DC IN] jack is only for an AC adapter (AD-55/A/S/V).
How to improve the sensitivity of my Icom Receiver?
If the sensitivity of your Icom Receiver is low, check the following: 1. Ensure the coaxial cable isn't cut and fix it if it is. 2. Verify an antenna is connected. 3. Make sure the connected antenna is matched to the receiving frequency. 4. Check that you're using the correct antenna connector for V/UHF and HF antennas. 5. In set mode, confirm the proper antenna connector (SO-239 or phono (RCA)) is selected for the HF antenna. 6. Ensure an RF attenuator isn't activated by pushing [ATT 10 dB] or [ATT 20 dB] to cancel the function.
What to do if Icom IC-R8500 Receiver signal is unclear?
If the receive signal on your Icom Receiver is unclear or distorted, try the following: * Set [IF SHIFT] to the center position if it's rotated too far CCW or CW. * Adjust the [APF] control to the center position or turn it OFF if it's rotated too far CCW or CW. * Ensure you're pushing the correct mode switch.
General| Antenna Impedance | 50 Ω |
|---|---|
| Power Supply | 13.8 V DC ±15% |
| Mode | AM, FM, WFM, CW |
| Channels | 1000 |
| Tuning Steps | 10 kHz |
| Dynamic Range | 100 dB |
| IF Output | 10.7 MHz |
| Antenna Input | SO-239 |
Critical safety warnings for receiver operation and power connection.
Procedures for removing the top and bottom covers of the receiver.
Steps for installing optional filters and synthesizer units.
Adjustments for receiver sensitivity and bias voltages across different modes.
Tuning procedure for the RF-B unit's bandpass filters.
Adjustment of noise squelch, S-meter, and center indicator functions.
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