-23-
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
S.W.R.
0
50 100 150 200 250 300 350 400 450 500 550 600 650
kHz
TROUBLESHOOTING
Look for: Operation at high power levels in areas where salt or pollution deposits
have built up on the insulators. The cure is to keep insulators clean
through routine maintenance.
Symptom: Intermittent operation. SWR jumps up and down suddenly, and
reception is also intermittent.
Look for: Loose connections in the feedline or matching line (if used). Bad relay
in rig. Bad antenna switch or connecting cable. Broken or corroded
connections at the feedpoint. Bad radial/ground connection. Radial or
antenna contacting metal when wind blows. Loose hardware on the
antenna. Check and secure all connections.
Symptom: Antenna displays generally degraded performance after long period of
time.
Look for: Lack of routine maintenance. Coax may be waterlogged or damaged.
Build up of salt or pollution deposits on insulators and capacitors.
Radial system corroded or rotted away. Owner must do routine
maintenance at intervals, according to local conditions.
Symptom: SWR is OK on 75
meter, but goes up
gradually when
high power is
applied. This is
accompanied by
heating of 200pF
capacitor.
Look for: Bad ceramic
capacitor. Replace.
Symptom: Antenna doesn't
tune 80 meter or
160 meter, even
though radials are in place and of proper length.
Look for: Antenna far out of tune; operator has not followed systematic tuning
procedure. Start with suggested settings in instructions. Make an
SWR chart to determine point of resonance. Adjust coils
carefully!
Remember, tuning, is
sharp
on these bands, so it is easy to pass the
resonant point, then assume erroneously that the antenna isn't tuning.
BEFORE you call the manufacturer for help, please double check your installation,
including all connections and dimensions. Tune carefully and systematically.
Have SWR curves available. Be prepared to describe your installation in detail.
Summary of Contents for HF9V
Page 14: ...14 Feedline Detail PICTORIAL...
