507 / Patriot Users Manual
Release 1.01
March 10, 2015
Part #74485
Printed in USA
Page
6
of 15
actual “tuned to” frequency. To do this, adjust
the following value in the code until you get the
desired effect: (be sure to check both bands)
const long Reference = 50.0e6;
2.5 Microphone Jack
This 8 pin connector allows a microphone wired
for a Ten-Tec Transceiver to be connected. Also
the connector allows audio data in and out to be
connected to the 507 for Digital
Communications.
The optional Model 712 with a user supplied
adapter to the 8 pin microphone connector
enables quick connection to a computer for these
other modes.
Refer to 507 – 712 Wiring Diagram later on this
page for correct wiring instructions.
2.6 CW Mode Operation
Set the tuning step to 10kHz and tune (as
described in section 2.4) to the CW portion of
the band. Set the RIT control to center (pointing
to the “I” in the RIT text on the front panel) so
that the receive offset will be about 800 Hz.
When the PTT button on the microphone is
depressed, the Patriot will transmit in the
appropriate CW mode for the band. Reduce the
tuning step as desired. Adjust the side-tone
volume level as desired.
2.7 SSB Mode Operation
The Patriot wakes up in the SSB portion of the
40m band and when switching to 20m tunes to
the SSB portion of that band. Set the tuning step
size and tune to the desired frequency (as
described in 2.4). Set the RIT to center (I in
RIT) for normal simplex operation. When the
PTT button on the microphone is depressed, the
Patriot will transmit in the appropriate SSB
mode for the band.
Note: While Reverse is not a function provided
by the Patriot, it can be added to the ChipKit
Uno32 code project by the user as desired.
2.8 Digital Mode Operation
The 8 pin microphone jack includes the normal
push-to-talk signal, audio in, etc., but it also has
additional pins to support line-level in and line-
level out. Since the Patriot is in LSB mode on
40m and USB mode on 20m, the digital mode
software will have to be adjusted accordingly.
RTTY is typically LSB so the reverse mode of
the software will have to be enabled for
operations on 20m. JT-65 software uses USB so
operation on 20m requires no adjustments.
Some JT-65 software does not allow reversal of
the tones to accommodate LSB and may not be
usable with the Patriot without modification of
the ChipKit code (see Rebel JT-65 code on the
Rebel Yahoogroup for details on how to do this).
PSK31 uses phase shift and doesn’t care which
sideband setting is used.
It is essential to adjust the RIT setting to exactly
0 for the digital modes unless operating split.
Because most digital mode software requires
selecting the transmit frequency by clicking on
the waterfall, it would be likely that transmitting
and receiving on slightly different frequencies
could result in 2 stations chasing each other up
or down the band.
8
1
6
5
4
3
2
7
507
712
5 pin DIN
8 pin MIC socket
507 – 712
Wiring
1 – Line Out To Sound Card
2 – +8.0 V series 100 ohm
3 – N.C
4 – Line In From Sound Card
5 – GND
6 – SSB PTT
7 – MIC GND
8 – MIC
507 MIC Connector Pinout
