Be a good listener and search out and answer CQs, or call stations that have just completed QSOs (a
practice called tailgating).
Never hesitate to call a weak station because it may be QRP or using a marginal antenna. You may be
much louder than you think!
Be realistic about diving into huge 20 meter pileups. Once a
choice DX station hits the packet clusters and the big guns move
in, calling may be a waste of time until the smoke clears.
Tune slowly and listen carefully. If one exotic station is
coming through, there may be others you can work nearby.
Pay attention to DX forecasts and gray line propagation. When
the band is hot, power differences become much less significant.
Operating just before the band goes out at night may yield strong
signal reports from exotic locations with little QRM.
Don't be shy about calling. The MFJ 9420 has very potent audio
and on air tests indicate its signal is competitive with higher powered radios. If your antenna is good, most
stations won't
even know you are running low power!
US AT
800 647 TECH (800 647 8324): Your MFJ 9420 is fully backed for 1
year by MFJ's "NO MATTER WHAT GUARANTEE". After that, MFJ
Customer Service Technicians will be there to help you keep your
rig in top shape for as long as you own it. However, before you
call us, please check through this list just to make sure the
problem isn't something simple you can fix yourself!
1. RADIO DOES NOT POWER UP
Is power plug okay, broken supply wire?
Is supply or battery functional?
Is reverse polarity fuse open?
2. NO SIGNALS RECEIVED
Is antenna disconnected or broken?
Is TUNE switch stuck on?
Is the band dead?
3. RADIO DOES NOT TRANSMIT OR KEYS ERRATICALLY
Is microphone and connector okay?
4. ERRATIC TRANSMIT
Is SWR high (above 3:1)?
Is power source voltage low or "soft" under load?
5. AGC IS INEFFECTIVE OR S METER IS NOT ZEROED
Is Regulator okay (10.0 V on TP1)?
Is AGC okay (4.3 on TP2?)
If TP1, TP2 okay and AGC works, rezero meter via R51.
6. RADIO DRIFTS IN FREQUENCY
Is radio sitting in Sun, on hot surface, in cold draft?
Was radio moved from extreme cold to warm (condensation)?
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