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.
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.
Why doesn't auto memory write scan work on my Icom IC-R8500 Receiver?
If auto memory write scan does not function on your Icom Receiver, it's likely that all channels in the auto memory bank have been programmed. Erase some or all of the channels in the auto write bank.
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.
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 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 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.
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 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.
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.
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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