- 5 -
relay to work without causing problems. Examples of how to de-tune an antenna can be found in
ON4UN's book "Low-Band DXing".
Protective Timing to Transverters
Stand-alone transverters/converters are used for VHF/UHF or EME communications. Some are
used for receive-only, and must be bypassed or turned off prior to transmitting. The
TVSU-1B
can
switch-off the power or provide an auxiliary timed delay to the equipment.
Panel Connectors and Controls
POWER
Operating voltage for the
TVSU-1B
. Requires 10-20 Vdc @ 250
mA. 2.1 mm jack with center positive. (included with the TVSU-1B)
TONE
Provides an audio sidetone that follows the CW IN port key closures. Pitch is
adjustable from 300-1000 Hz in approximately 50 Hz increments. 1/8" [3.5
mm] stereo plug. (Included with the TVSU-1B)
VOL
Sidetone volume adjustment. Maximum power output is 1/2 watt into 8 ohms
(2.1 volts RMS) or 7.5 volts peak-to-peak into an open circuit.
AUX
Auxiliary
OUT
with adjustable on delay after CW or PTT closure, no off
delay. RCA phono jack.
CW
Key or keyer
IN
with internally adjustable delay to
OUT
. Precisely repeats
input signal but with adjustable time lag up to 30 ms. RCA phono jack.
PRE AMP PWR
-
IN
- center positive, 9-30 Vdc. 2.1 mm female jack,
OUT
- center positive,
500 mA max load. 2.1 mm female jack. The
OUT
jack mirrors the voltage
supplied from the IN jack.
DO NOT
apply voltage to the
OUT
jack. Voltage
from the
OUT
jack drops immediately upon CW or PTT closure. The voltage
returns, after an adjustable delay, on release. Used to control the power to
active antennas, pre amps, etc. (included with the TVSU-1B)
Содержание DXE-TVSU-1B
Страница 8: ...8 Figure 1 Basic Connections to Typical Peripheral Equipment...
Страница 9: ...9 Refer to Figure 1 for additional TVSU 1B connections Figure 2...
Страница 13: ...13 Figure 4 TVSU 1B Timing Diagram...
Страница 16: ...16 Figure A 3 Yaesu FT 2000...
