TRANSMISSION LINE
To connect an antenna to the transceiver, a' 52-ohm coaxial transmission
line is required.
[ See Figure 1 for assembling connector to RG-58/U coaxial cable.]
INSTALLATION ADJUSTMENTS
The output circuit of the PANTHER SSBtransmitter has been factory adjusted
to operate into any good 52-ohm antenna. No attempt should be made
to tune the transmitter to the antenna. Instead, the antenna should be ad-
justed to present the lowest possible SWR (Standing Wave Ratio). A very
low SWR means that the antenna is operating at maximum efficiency and
will also mean that it is adjusted to 52 ohms. An improperly adjusted an-
tenna causes standing waves to appear on the feed line. Since this feed
line is a fixed 52 ohms, cincl cannot be adjusted, this mismatch appears
at the transmitter. If the transmitter is adjusted to compensate for this mis-
match, both it and the antenna will no longer be operating at peak effi-
ciency. Since the transmitter has already been adjusted for 52 ohms output
and the coaxial feed line has a fixed 52-ohm value, the only remaining
element to be adjusted to this value is the antenna itself. When receiverd,
the antenna is probably cut as near as is possible to this value. The mount-
ing location on the vehicle or building and surrounding objects affect the
antenna however, and requires that it be adjusted to compensate for them.
Many of the newer Citizens Band antennas provide means of adjusting
them for lowest SWR. Instructions for doing so are included with the an-
tenna. For such antennas as the full quarter wave length whip, it is nec-
essary to carefully vary the length until the lowest SWR is obtained.
The built-in SWR bridge is ideal for this type of adjustment.
The PANTHER SSB will work into an antenna system having an SWR as
high as 3: 1. For best communications, you will want this figure as near
1:1 as possible so that the antenna will be operating at its best efficiency.
NOISE SUPPRESSION
The PANTHER SSB contains automatic noise limiter on AM and noise
blanker on AM and SSB, and input power filtering. In most vehicular in-
stallations, the noise suppression for the entertainment radio will be suf-
ficient. Vehicles and boats not having this suppression may require that
it be installed. In most cases, installation of distributor suppressors and
generator condensers will be sufficient. In severe cases, the service of a
qualified technician may be required. See your PEARCE-SIMPSON dealer
for advice.
