A review of the LNR Precision version of the MTR, Mountain Topper Radio a three band, CW only, QRP trail friendly transceiver.
Mountain Topper Tri-Bander
Developed by Steve Weber KD1JV Designs
FULLY ASSEMBLED – Manufactured by LNR Precision, Inc.
A very small, very efficient three band QRP CW rig.
Specifications:
Three bands, 40M, 30M, 20M
Receiver:
MDS: ~0.2 uV
Small signal band width ~ 500 Hz
Audio output limited to ~ 1200 mv p-p
Headphone output, 16 ohms min recommended.
Transmitter:
2.5 watts @ 9 volt supply typical
Spurs -50 dBc or better
Size:
3.8” x 2.7” x 1” (LWH)
Weight:
4.4 ounces.
Power requirements:
6 volts minimum, 12 volts maximum.
Power jack: 1.7 mm center hole, 4 mm diameter, 10 mm (or longer) length.
Receive current:
~ 35 ma, no signal.
Transmit current:
~ 400 ma @ 9V, 20M
~ 550 ma @12V, 20M
(transmit current is slightly less on 40 and 30 meters)
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