Diamond Antenna HV7A Instruction Manual page 3

Typical VSWR Charts
6M/50 MHz
2.0
1.5
1.1
f
-2 MHz
o
<40m> HVC7
f
-14 KHz
o
<20m> HVC14
f
-30 KHz
o
<15m> HVC21
f
-90 KHz
o
<17m> HVC18
f
-70 KHz
o
+2 MHz
+14 KHz
(1)
loosen from vehicle and road vibration. Be sure to check periodi-
cally to ensure they are fastened securely.
(2)
impact with these obstacles will cause antenna damage.
+30 KHz
(3)
or installation on large GVW vehicles.
(4)
(5)
sections.
(6)
+90 KHz
+70 KHz
3
— 40m
Tuning element
—20m
—17m
Tuning
Tuning
WARNINGS:
Bolts and set screws on antenna and mounting bracket may
Avoid obstacles such as tree branches or low overpasses;
The HV7A is not recommended for either magnet type mounts
Avoid touching antenna while transmitting.
Do not scratch or remove rubber covering on loading coil
Avoid driving with antenna in folded position.
<10m> HVC28
f
-195 KHz
o
HVC Loading Coils
—15m
—10m
Tuning
Tuning
+195 KHz