Signal Path - Subreceiver; Signal Path - Transmitter - Ten-Tec Orion 565 Manual

sensitivity despite unavoidable filter losses.
The amplified and band-limited signal feeds
the IF converter board (A5) via cable 16.
A5 provides conversion to the 2
amplification, filtering, and conversion to the
rd
3 IF for processing in the A7 logic board.
Cable 18 carries the 14 kHz third IF to the
DSP in A7.
After digital signal processing in A7, the
recovered audio travels through the
motherboard to the headphone jack on A8
and to the EXT SPKR and AUX I/O jacks on
A12. From A12 wire cable 36 runs to the
internal speaker.
The synthesizer board (A10) supplies 1
local oscillator signal to A3 via cable 12, and
nd
2 LO to A5 via cable 19.
Signal Path – Subreceiver
For the subreceiver, the signal path starts at
an antenna jack selected by the I/O board
(A0) and proceeds to A6, the subreceiver
board. This board comprises the entire
analog circuitry of the subreceiver,
accomplishing conversion of HF signals
successively to 45 MHz, 450 kHz, and 14
kHz intermediate frequencies. 3
travels to the DSP via cable 20. Audio from
A7 goes through the motherboard (A11) to
the headphone jack on A8. The audio signal
also reaches the EXT SPKR and AUX I/O
jacks via A11 and A12. From A12 it runs
through wire cable 36 to the internal speaker.
The synthesizer board (A10) supplies a 2
local oscillator signal and a frequency
reference for the subreceiver's 1
oscillator to A6. Cables 23 and 21 carry
these signals.
Signal Path – Transmitter
The TX signal path has the MIC and CW
(key/keyer) jacks on A8 as sources. Other
sources are the KEY and AUX I/O jacks on
A12. The audio signals from MIC and AUX
I/O travel via cables 25 and 24 respectively.
Keying lines get to A7 via A11.
From the DSP, cable 17 carries keyed or
rd
modulated 3 IF to A5. The 9 MHz output
from the IFCNV feeds A3 via cable 13. The
resulting HF signal can go to the XVRTR RF
565 manual
Part # 74279
Printed in USA
jack on the I/O board through cable 3, or to
the PA (A2) via cable 8.
From A2 the path to the LPF board is via
nd
IF, cable 7. Cable 27 brings the high level
amateur band HF to AO, the I/O board. On
the I/O board, the signal is routed to the
selected ANT1 or ANT2 RF output
connector.
If it is installed, the optional internal
automatic antenna tuner (A14) is connected
in the ANT1 path only. Cable 26 provides
the A14 input path, and cable 27 is the
output path. If the transceiver has no A14,
cable 28 replaces the autotuner.
st
rd
IF signal
nd
st
local
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