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For rural areas, it is recommended that a local
dealer be consulted about antenna installation
and lightning arrestor protection. Master antenna
systems are not recommended for use with your
Model 2235B; such systems are usually designed
expressly for television reception and frequently
suppress FM signals before distribution. In addi-
tion, master antenna systems often severely re-
duce the quality of the FM signal. When outdoor
antennas are prohibited or inconvenient, place the
antenna in vacant attic space or-use a simple 300
ohm TV "rabbit ear" antenna or the ribbon-type
folded dipole antenna supplied with the Model
22358. Both are practical and will give satis-
factory results in primary signal areas.
Your Model 2235B Receiver will accept either a
75 or 300 ohm antenna (see diagram, Figure 2).
The 300 ohm antenna cable should be connected
to the two terminals marked FM on the ANTEN-
NA terminal. When using 75 ohm coaxial antenna
cable, connect its shield to the G (G ROUND)
terminal, and its inner or center conductor to
either of the FM terminals.
AM ANTENNA
Your Tuner is equipped with an AM ferrite-rod
a n te nn a . BE FORE U S ING TH E M O DE L 2 2 3 5 8 ,
S WI NG THE ANT E NN A OUT A S SH OWN I N
F I GU RE 3 .
The ferrite-rod antenna will give you satisfactory
results in primary signal areas. However, an
outdoor antenna will provide better reception in
weaker signal areas. Two single wires are required
to make an AM outdoor antenna. First. connect
Figure 2. AM/FM Antenna Connection
one end of a single wire to the AM ANTENNA
terminal on the rear panel, and the other end to a
very high horizontal antenna wire of 25 to 75 feet
in length suspended between insulators in an
outdoor location (the higher the better). Next,
connect the other single wire between the "G"
terminal of your Model 22358 and an authenti-
cated earth ground (such as a metal water pipe).
FM OUADRADIAL OUTPUT JACK
In anticipation of future four channel quadra-
phonic broadcasting,
your Model 22358 is equip-
ped with an FM oUADRADIAL OUTPUT jack.
The signal available at this jack is the unequalized,
buffered outDut of the FM discriminator. lts
level, frequency response characteristics,
and out-
put impedance are ideal to drive a four channel
adaptor. This.iack can also be used as a simple
"white noise" generator for checking the response
characteristics of loudspeakers or amplifiers. For
this application, place the Model 22358 in FM
mode with the muting off, and tune between FM
stations to receive interstation noise.
PRE OUT AND MAIN IN JACKS
The PRE OUT jacks deliver the output of the
Model 22358 preamplifier circuits to the rear
panel. The MAIN lN lacks are the input terminals
of the power amplifier section of the Model
22358. fhe PRE OUT and MAIN lN jacks are
bridged internally by special contacts within the
jack assembly. When you wish to use such
equipment as a graphic equalizer, compressor/
limiter, or expander, you may connect these
instruments to your Model 22358 with appropri-
ate lengths of shielded audio cables. When the
Figure 3. AM Ferrite-rod
Antenna
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