LPA1
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17
PROBLEM: The amplified signal is distorted.
SOLUTION: Make sure that all of the component leads are as short as
possible. Leaving the leads longer than necessary leaves you open for
noise. You should also check the gain. You may be overdriving the
amplifier. Try lowering the input power or installing the feedback circuit. The
amplifier will only be able to deliver a watt of power, so any more will cause
your signal to distort. If the gain is still too high, you can install an
attenuating circuit like shown. The circuit is installed in series between the
transmitter and the amplifier. Tables of resistor values can be found in
various sources including the ARRL Handbook, an annual publication of the
ARRL.
Due to the fact that there are so many combinations of resistors in the above
circuit, we regret that we cannot provide either resistor values or technical
support. The ARRL handbook can be obtained by ordering direct from the
ARRL, or may be found at your local Radio Shack.
Ordering Amplifier Parts:
For convenience, we offer the following parts
by mail request only.
Please
do not call - complete and mail the order form. This saves you the small
order fee and normal handling charge.
16dB attenuator (Source: ARRL Handbook)
Component
Qty
Price (ea)
SubTotal
MAR 3 RF AMP
$8.10
MRF 581 NPN
$8.85
221334 PNP
$.95
Postage & Handling
$ 1 . 0 0
TOTAL
Summary of Contents for LPA1
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