Figure 2.17 Identifying The Circuitry On The Rf Board - K And L Bands - Tait TB8100 Service Manual

Figure 2.17 Identifying the circuitry on the RF board - K and L bands
b
external reference input
c mixer and post-mixer buffer
d receiver VCO
e receiver VCO trimmer
f IF tuning elements
g receiver synthesizer
h TCXO
i external reference switch/internal VCXO reference
j audio buffers
1) exciter VCO 1 trimmer
1! exciter VCO 1
1@ exciter VCO 2 trimmer
1# exciter VCO 2
1$ exciter RF output
1%
exciter synthesizer
1^ FCL buffers
1& power supply
1* FCL
1( IF
2) front end
2! SAW filter (L band only)
2@ front end first helicals (K band only)
2# SAW filter (L band only)
2$ front end second helicals (K band only)
2% receiver RF input
Note:
In order to show as much of the circuitry as possible in the
photograph, the SMD shields have been removed. The
photograph shows an L-band reciter. The layout of the K-band
reciter circuitry is identical except where noted.
TB8100 Service Manual
© Tait Electronics Limited September 2006
2%
2$
2#
2@
2!
2)
1(
1*
1&
1^
1%
b
c
d
e
f
g
h
i
j
1)
1!
1@
1#
1$
Reciter Circuit Description 67