Receiver sensitivity of my new Icom FM mobile transceiver (such as IC-2710H, IC-207H, IC-2100H, IC-2350H) seems poor. What is wrong?
These newer Icom mobile FM transceivers have a receive attenuator function tied in with the squelch knob. This feature is useful in high RF environments as it helps in eliminating unwanted signals. The squelch knob operates normally until it reaches the 12 o’clock position. The level of attenuation is gradually increasing from the 12 o’clock knob position to full clockwise position. Operate the squelch knob in the 9 o’clock to 12 o’clock positions If you need maximum receiver sensitivity at all times.
