Note
QST, May 1978, pp.120–122.
QST, Sep 1979, pp. 202–205. (full specs)
QST, Jan 1980 p. 109.
QST, Apr 1981, p. 103.
QST, Jan 1982, p, 101.
The R.L. Drake Company introduced the TR-7 transceiver and 7 -Line equipment in the spring of 1978. The TR-7 used a combination of synthesizer and PTO frequency control. All circuits were solid-state and broad-banded. It covered the 160-10 meter amateur bands and, with the addition of accessories such as the DR-7 and Aux-7, provided continuous receiver coverage from 0 to 30 MHz. The basic TR-7 had an analog dial and the DR-7 General Coverage/Digital Readout board was necessary for the digital dial and continuous 1.5-30 MHz tuning. The TR-7 used up-conversion and a 48 MHz first IF. The transmitter was rated at 250 watts input on CW and SSB. It also transmitted AM using the upper sideband and 80 watts carrier power; basic TR-7.
The TR-7 was Drake's most ambitious project to date, but could not compete with the rigs of Icom and Yaesu.
Lots of optional add-ons.
References
Adding WARC and LF bands. QST, Jul 1982, p. 20.
