[Boatanchors] REDUCED: Drake TR3 Transceiver
bcarling at cfl.rr.com
Sat Mar 5 09:14:43 EST 2011
FOR SALE: Drake TR3 Transceiver
The R. L. Drake model TR-3 is an SSB-CW-AM transceiver designed for the
transmission and reception of upper and lower sideband signals on the 80
through 10 meter amateur bands. AM and CW capabilities are included.
Ideal for both fixed station use in conjunction with the model AC-3 or AC4
120 volt AC Power Supply, or for mobile installations using the DC-3 or DC4
12 volt DC Power Supply.
The 300 watt PEP input on SSB enables the TR-3 to give an excellent
account of itself barefoot and it will drive the highest powered ham linear
Upper and lower sideband selection is accomplished by switching between
two Drake designed and manufactured 9 MC crystal lattice filters with 2.1 kc
pass-bands. Among the other features included on the TR-3 are VOX and
PTT, shifted carrier CW, separate RF and AF gain controls, linear
permeability tuned VFO with vernier scale, transmitting and receiving AGC,
and separate receiver S-meter and transmitter plate ammeter. The addition
of the accessory RV- 3 remote VFO speaker combination enables the
operator to receive, transmit or transceive throughout the band being used
without disturbing the setting of the TR-3 tuning dial. This is useful for
working DX stations operating outside the United States Phone Bands, or
for working near your own frequency in search of a clear spot under
crowded band conditions.
FREQUENCY COVERAGE: Full coverage on all amateur bands 10 thru 80
meters, in seven 600 k c ranges ; 3.5-4.1 mc, 7.0 to 7.6 mc, 13.9 to 14.5
mc, 21 to 21.6 mc, 28 to 28.6 mc, 28.5 to 29.1 mc, 29.1 to 29.7 mc.
bullet LINEAR PERMEABILITY TUNED VFO: Tunes 4.9 to 5.5 mc for all
ranges, 9 mc I.F. minus VFO range overs 80 meters, 9 mc I. F. plus VFO
range covers 20 meters. VFO and crystal oscillator heterodyned in premixer
for 40, 15, and three 10 meter ranges.
DIAL CALIBRATION: 10 kc divisions on main tuning dial and interpolation to
1 kc on tuning knob skirt . Effective length of circular dial scale is over 14
FREQUENCY STABILITY: High stability permeability tuned VFO tunes
same range on all bands . Drift is less than 100 cycles after warm-up, and
less than 100 cycles for plus or minus 10% line voltage change.
FRONT PANEL CONTROLS:
bullet Main Tuning has fluted knob with adjustable 25 division skirt. Tunes
VFO and rotates main dial.
bullet RF Tune tunes the RF circuit common to receiver RF amplifier and
transmitter driver stages. 0-10 scale.
bullet Plate and Load tuning adjust pi-network capacitors in transmitter for
proper resonance and loading on each band.
bullet Band switch selects desired ham band (see frequency coverage).
bullet Function switch has four positions CAL, SSB, X-CW, X-AM. CAL
operates built-in 100 kc crystal calibrator for accurate setting of main tuning
hair line indicator and knob skirt SSB provides SSB operation, either VOX or
PTT, and is receive position for SSB, CW, and AM. X-CW (transmit CW)
inserts carrier , converts `Xmtr Gain´ control to carrier injection for tuning and
CW transmitting. X-AM (transmit AM) inserts carrier and screen modulator
for AM transmitting.
bullet XMTR GAIN functions as mike audio gain on SSB and AM, and as
carrier injection control on X-CW for tune and CW.
bullet RCVR GAIN knob controls receiver AF gain and power ON-OFF
switch. Lever behind knob controls setting of RF gain.
bullet Sideband switch in conjunction with indicator lights marked Upper
and lower selects desired sideband by connecting into the circuit either the
upper or lower sideband filter.
There is no power supply with this radio.
Pictures and details here:
Available for $115.00 plus shipping
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