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FS: Tepco J-340 / Robert A Jones FM Translator -- Works -- 91.7 -> 88.1MHz
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Mark & Mary Ann Weiss
Apr 10, 2012, 5:20:38 PM4/10/12
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FS: Tepco J-340 / Robert A Jones FM Translator --
Works -- 91.7 -> 88.1MHz
This Translator is set up to receive on 91.7MHz and re broadcast on 88.1MHz. It has been tested and found to work. Puts out 10-40 watts (tested into dummy load) and mutes output when input signal is not present. It needs a new meter, but otherwise seems to be completely functional.
SPECIFICATIONS
RECEIVER
Frequency
Any frequency from 88 to 108 MHz
RF Output Impedance
50 or 75 ohms
Sensitivity (For 30db of quieting)
(For 50db of quieting)
2uV across 50 ohms
10 uV across 50 ohms
Noise Figure
4db
Automatic Gain Control Range
120dB
Bandwidth
240KHz
Image Rejection
100dB
RF Input Impedance
UHF connector standard (other connectors available)
50 or 75 ohms
TRANSMITTER
Frequency
Any frequency from 88 to 108 MHz
Type of Emission
180F3
Rated Output Power
10 to 40 watts
Power Output Regulation
Within 1% for any change In signal Input level or AC line variation of 10%
RF Output Impedance. UHF connector standard (other connectors available)
50 or 75 Ohms
Harmonics
-80db or better
Spurious Output (600 kHz removed)
-80db or better
FM Signal To Noise Ratio
-70db or better
AM Noise (Referred to carrier) Ratio
-65db or better
OTHER
Overall Frequency Stability
+/-1800 Hz from -30 to +50 deg C
Intermediate Frequency
10.7 MHz
Power Requirements: For 40 Watts RF
AC: l00VA or DC: 2.8 Amps at 28 Volts
Optional Audio Modulator
As per 74.123
Dimensions
19" by 13" x 3 1/2"
Weight
25 lbs (Approx. 30 lbs. shipping)
RECEIVER
Frequency
Any frequency from 88 to 108 MHz
RF Output Impedance
50 or 75 ohms
Sensitivity (For 30db of quieting)
(For 50db of quieting)
2uV across 50 ohms
10 uV across 50 ohms
Noise Figure
4db
Automatic Gain Control Range
120dB
Bandwidth
240KHz
Image Rejection
100dB
RF Input Impedance
UHF connector standard (other connectors available)
50 or 75 ohms
TRANSMITTER
Frequency
Any frequency from 88 to 108 MHz
Type of Emission
180F3
Rated Output Power
10 to 40 watts
Power Output Regulation
Within 1% for any change In signal Input level or AC line variation of 10%
RF Output Impedance. UHF connector standard (other connectors available)
50 or 75 Ohms
Harmonics
-80db or better
Spurious Output (600 kHz removed)
-80db or better
FM Signal To Noise Ratio
-70db or better
AM Noise (Referred to carrier) Ratio
-65db or better
OTHER
Overall Frequency Stability
+/-1800 Hz from -30 to +50 deg C
Intermediate Frequency
10.7 MHz
Power Requirements: For 40 Watts RF
AC: l00VA or DC: 2.8 Amps at 28 Volts
Optional Audio Modulator
As per 74.123
Dimensions
19" by 13" x 3 1/2"
Weight
25 lbs (Approx. 30 lbs. shipping)
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