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ME4-T 4m LINEAR TRANSVERTER
TECHNICAL DATA:
TX SECTION:
Input frequency………………………………………….27.9-29MHz
Output frequency………………………………………. 69.9-71MHz
Drive power……………………………………………. –18..+37dBm/…0.dBm is factory set/
Output power……………………………………………25W min.
Spurious suppression…………………………………… > 60dB
LO accuracy @ 20C …………………………………… typ +/- 10ppm
RX SECTION:
Input frequency………………………………………… 69.9-71MHz
IF frequency……………………………………………. 27.9-29MHz
Noise figure……………………………………………. 1.5dB
Conversion Gain……………………………………….. 22dB typ
General Power requirements……………………………13.8V DC
Current drawn on receive/transmit…………………….. 0.2A/5A max.
LO frq stability (0- +30C)……………………………… typ. +/- 10ppm
Intercept point………………………………………….. +7dBm
ME4-T Connection and operating instructions
Front Panel controls:
Switch „ON” Provides power to the transverter, The „ON” LED indicator should light
PWR Output power control (approx 5-25W)
ON LED Indicates ON status of the equipment.
RX LED Indicates the receiving status of transverter.
TX LED Lights when the transverter is on transmit position (PTT input is on GND)
LED Bargraph Indicates the relative RF output power of transverter.
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Ant RF
-
out
Rear Panel connections:
ANT (UHF ) An UHF type connector is provided for 70MHz RF input & output.
PTT (RCA) This connector provides a connection to the TCVR PTT line. A ground
on this line places the transverter into transmit mode.(+13.8V/40mA)
IF in (BNC) Apply 28MHz drive to this connector. The input level is -18…+37dBm,
You can set the attenuator with jumpers. See:
http://www.ha1ya.hu/htmkepek/me4ttransv.htm
On case single IF cable mode connector is common IF TX/RX.
IF out (BNC) IF (receive) output is available at this connector. Do not apply RF
power to this connector!
On case single IF cable mode this connector is open.
SND out (RCA) Send open collector output to external PA’s( 50V/200mA max)
DC SUPPLY Conn DC connector, 20A type.
Cable connections:
Two IF cable connecting on case low or high power(max. 5W) out TCVR’s
70MHz ant
TCVR
TX-GND
ME-4T
PTT
IF-in IF-out + 13.8V -
15uW to 5W max.
Switch OFF the PA of your TCVR or set to max 5W out!
13.8V/5A SND
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Ant
Single cable connecting on case low or high power out TCVR’s
70MHz ant
TCVR
TX-GND
ME-4T
PTT
IF-in IF-out + 13.8V -
15uW to 5W max.
Switch OFF the PA of your TCVR or set to max 5W out!
13.8V/5A SND
Using transverter with high power radio(100w) is your own risk,
NEVER use higher power than 5W! Another case you will lost the warranty.
Setting of 28MHz input level:
1. Set the PWR knob to right full clockwise.
2. TX cw mode set the IF poti -over the top cover slots- up to full scale(25W) on the led
bargraph.
3. You can reduce the output power with the PWR poti from appr.5W to 25W output.
More technical info, attenuator jumper settings etc: www.ha1ya.hu/htmkepek/me4ttransv.htm
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Attenuator jumper settings:
Low PWR IF input (-18..+27dBm)
2x IF cable connection
J1 ON ON
J2 OFF ON
J3 OFF OFF
J4 OFF ON
J5 ON OFF
Low PWR IF input (-18..+27dBm)
1x IF cable connection
High PWR IF input (27..+37dBm)
2x IF cable connection
J1 OFF OFF
J2 ON ON
J3 ON ON
J4 OFF ON
J5 ON OFF
Factory set: Two IF cable, 0dBm IF input.( 1mW)
High PWR IF input (27..+37dBm)
1x IF cable connection
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