Icom IC-7851 User Manual (English)

Other manuals for Icom IC-7851

Servise Manual179 pages

Quick Start Guide8 pages

Questions and Answers:

J
Jeremy SmithAug 20, 2025
What to do if Icom Transceiver frequency display isn't changing?
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  Jessica YoungAug 20, 2025
  If the displayed frequency on your Icom Transceiver is not changing properly, it could be due to a few reasons. Check if the dial lock function is activated and, if so, push [LOCK] to turn the function OFF. Also, ensure that you are not on a Set mode screen; push [EXIT/SET] several times to exit the Set mode screen. In some cases, the internal CPU may have malfunctioned, requiring you to reset the CPU.
N
Natalie FranklinAug 22, 2025
What to do if no sound from Icom Transceiver speaker?
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  timothyhuntAug 22, 2025
  If you cannot hear any sound from the Icom Transceiver speaker, there are a few potential causes. First, the volume level might be too low, so rotate the [AF] control clockwise to increase the listening level. Second, the squelch might be closed; turn the [SQL] control to the 10 o’clock position to open it. Finally, the transceiver might be transmitting; push [TRANSMIT] to receive, or check the SEND line of an external unit if one is connected.
H
hudsonalexandriaAug 25, 2025
How to fix Icom Transceiver when power does not come on?
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  Erin CampbellAug 25, 2025
  If your Icom Transceiver does not power on when you push the power key, it could be due to a few reasons. Check that the AC power cable is correctly connected. Ensure that the internal power supply is turned ON. Also, verify that the circuit breaker hasn't tripped; if it has, identify the cause and reset it.
J
Joseph SmithAug 26, 2025
Why is the output power too low on my Icom Transceiver?
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  tinasmithAug 26, 2025
  If the output power of your Icom Transceiver is too low, several factors could be the cause. Make sure that the [RF PWR], [DRIVE], and [MIC] controls are not set too far counterclockwise; adjust them clockwise to increase the power. Also, ensure you have selected an antenna suitable for the operating frequency and that the antenna is properly tuned by holding down [TUNER] for 1 second to manually tune the antenna.
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matthewspaigeAug 28, 2025
How to improve sensitivity on Icom Transceiver?
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  Mark WilsonAug 28, 2025
  If the sensitivity of your Icom Transceiver is too low, and only strong signals are audible, there are a few things to check. Ensure the antenna is properly connected to the antenna connector and that you've selected an antenna suitable for the operating frequency. Also, try manually tuning the antenna by holding down [TUNER] for 1 second. Lastly, make sure the attenuator is turned off by pushing [ATT] several times until “ATT OFF” is displayed.
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Larry EverettAug 30, 2025
What causes unclear audio on Icom Transceiver?
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  William WrightAug 30, 2025
  If the received audio on your Icom Transceiver is unclear or distorted, several factors could be responsible. First, ensure that a suitable operating mode is selected. If the PBT function is activated, hold down [PBT CLR] for 1 second to reset it. If the noise blanker is on while receiving a strong signal, push [NB] to turn it OFF. Check if a preamp is activated and, if so, push [P.AMP] once or twice to turn the function OFF. Finally, adjust the [NR] control for maximum readability, especially if noise reduction is activated.
A
Andrew TaylorSep 1, 2025
Why can't I contact another station using my Icom Transceiver?
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  keithdaltonSep 1, 2025
  If you are unable to contact another station with your Icom Transceiver, check if the RIT or ?TX function is activated and, if so, push [RIT] or [?TX] to turn the function OFF. Also, verify whether the Split frequency function and/or Dualwatch are activated; push [SPLIT] and/or [DUALWATCH] to turn them OFF.
B
Brianna WhiteSep 2, 2025
How to resolve unclear transmit signal on Icom Transceiver?
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  gateslaurieSep 3, 2025
  If your transmit signal is unclear or distorted on your Icom Transceiver, it might be because the [MIC] is set too far clockwise. Adjust the [MIC] to a suitable position.
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Miss Becky GreenSep 4, 2025
Why can't I access a repeater with my Icom Transceiver?
- R
  ryan71Sep 4, 2025
  If you cannot access a repeater using your Icom Transceiver, it may be because the Split frequency function is not activated. Push [SPLIT] to turn the function ON. Alternatively, the selected subaudible tone frequency may be incorrect; reset the frequency in the Set mode.
C
cardenasharoldSep 6, 2025
What to do if programmed scan doesn't stop on Icom Transceiver?
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  ecoxSep 7, 2025
  If the programmed scan on your Icom Transceiver does not stop, it is likely that the squelch is open. Set [SQL] to the threshold point.