Lafayette HE-30 - Installation

UNPACKING INSTRUCTIONS
After unpacking the receiver, carefully check for possible damage which may have occurred in transit.
Should any signs of damage be apparent (tubes broken, case dented, etc.), notify the store from which
it was purchased. If the unit was shipped to you, also file a claim with the carrier,
The following accessories should be included in the carton:
1 Standard Phone Plug
1 Jumper Plug (for the auxiliary control socket)
INSTALLATION
POWER SOURCE
The receiver is designed to operate from a 90-125 volt, 50-60 cycle AC power source, DO NOT OPER-
ATE FROM A DC SOURCE, The receiver is equipped with a voltage selector switch (located within
the unit), This switch should normally be left in the 117V position.
SPEAKER CONNECTION
A three-terminal strip marked OUTPUT is provided at the rear of the receiver for speaker connections.
Any PM speaker with either 4 or 8 ohm impedance can be used, Simply connect one lead to the ground
terminal "0" and the other lead to the terminal that corresponds to the speaker impedance, ‘The output
power of the receiver is sufficient to drive a 4-12 inch PM speaker adequately.
HEADPHONES
A standard phone jack is provided on the front panel of the receiver for headphone reception, Low im-
pedance (8-16 ohms) headphones are recommended for optimum results. Insertion of a phone plug into
the jack automatically disconnects any speaker attached to the 8 ohm output terminal, ; .
ANTENNAS
The terminals marked "Al", "A2", and "E" at the rear of the receiver are for antenna and ground con-
nections, Either of the following two types of connections can be used to obtain satisfactory results,
INVERTED L ANTENNA
The inverted L type of antenna will provide satisfactory performance over the entire tuning range.
Simply short Ae and E with a jumper wire, and connect one end of the antenna wire to Al, For good
reception, the antenna wire should be placed as high as possible and 50-100 feet long (see Fig. 1). In
some instances, a wire connected from terminal ''E'' to a water pipe may improve reception,
DOUBLET ANTENNA
A doublet antenna will give excellent results, especially on amateur bands. A 75 ohms balanced trans- . :
mission line should be used (as shown in Fig.2). Since the doublet antenna provides optimum perform- i 4
ance only at a given frequency, it should be cut to the length for the most often used band of frequencies.
The overall length of a doublet antenna can be determined by using the following formula: j
‘i
}
468
Frequency in megacycles
L (Length in feet) =