120
S-Meter and signal modulation with noise blanker off: Certain noise
conditions can interact with the AGC pulse rejection feature. If you
see the S-meter or receive signal being modulated in an unusual way,
set MENU:AGC Pulse Reject to OFF or use the noise blanker at a low
setting.
Distorted signals or artifacts heard when noise blanker is used: High
(more aggressive) NB settings can cause intermodulation between
very strong signals and other signals on the band. Use the lowest
effective setting. If there are strong signals nearby (QRM), bring up
the NB LEVEL controls and try changing the NB FILTER setting to
"NARROW" or "WIDE" rather than "NONE" (the default). See Noise
Reduction Controls for tips on optimizing noise blanker performance.
Spurious signals (“birdies”): All high-dynamic range receivers exhibit
some persistent weak signals or noise at specific frequencies. Nearly
all of these signals will be inaudible with an antenna connected. Auto
Notch may be useful for removing birdies in voice modes.
Attenuation of received signals below 1 MHz: Signals below about 1
MHz will be attenuated when the receiver is using the transmit
antenna path (i.e., when the RX antenna is set to "=TX", or to the ATU
antenna being used by the transmitter). See Listening to Signals Below
1 MHz.
Panadapter noise floor shifts up and down: (1) There may be a
strong nearby impulse noise source. Try turning on the panadapter
noise blanker (<DISPLAY> <NB>). (2) If the display reference control is
set to AUTO mode, it may react to very strong signals. Try using
MANual mode. See <DISPLAY> REF LVL>.
TRANSMIT
Upper limit to PWR setting on some bands: Max power output is
normally 110 W, though the limit may be lower in some countries
on specific bands.
To Next Page
Loading...
