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Zenith Radio Corp , Chicago, IL

Trans Oceanic Royal D7000

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überarbeitet am 3.11.2010

In 1969, Zenith brought out the Royal D7000, this travel receiver had not only FM band coverage but also a BFO to receive CW and single sideband transmissions.

Single conversion,

Analog dial , LW, MW, SW1 1,6-3,5 MHz, SW2 3,5-9 MHz, 31, 25, 19, 16, 13 m band, FM broadcast band, VHF Weather 160 MHz

AM, FM (VHF)

Sensitivity

Selectivity

batteries 8 x UM-1 or mains 115/220 Volt

The Royal 7000D is the last model of the solid state "Trans Oceanic" receivers it is equipped with a FM tuner and covers also the U.S. waether band around 160 MHz in the VHF band. The size of the receiver is 35 x 26 x 15,7 cm and it's weight 2 kg.
The radio is powered from eight 1,5V batteries, a nineth battery is used to power the dial illumination. Alternatively, the set can be powered from 115 or 230 V mains.

The Royal 700D comes with a rugged carrying handle, in contrast to the earlier models, the telescopic antenna can be pulled at the back of the top face, behind the world time converter.

In the upper part of the front panel, You find the frequency dials, the Trans Oceanic Royal 7000D has a turret tuner arrangement operated from a band switch at the right small face of the receiver, a similar arrangement is found with Sony's CRF-5090 "Earth Orbiter" or the Braun T1000.
The tuning knob is located in the speaker grille area. In a rectangular area at it's left, You find in a vertical row at the left hand the tiny analog signal strength meter, the headphones jack, the switches for AM/FM and the I.F. bandwidths NORM (wide) and SHARP (narrow) and the meter switch, in the vertical row at the right the rotary controls for the BFO, the manual R.F. gain control, the tone and volume control.
At the inside of the front panel cover, You find a movable compass rose and a frequency list - You can get sentimental feelings when You study the list of all stations active in the sixties. The world time zone calculator is of a special design and located at the top face of the radio: it can be moved with two thumbwheels like a film dial.

Operating the receiver is uncomplicated: the volume control is combined with the main switch. Turn the set on, select the desired band (BC / broadcast band stands for mediumwaves, the shortwave broadcast bands are marked in red in the 2-4 and 4-9 MHz bands, only the 31, 25, 19 and 16 m shortwave bands have their own dials with useful dial markings. In contrast to the earlier and simpler models, the Royal 7000D is equipped with a BFO for the reception of CW and single sideband transmissions in the amateur bands. Of course, the Royal 7000D comes without a digital frequency readout - this kind of luxury, a mechanical digital frequency readout, could be found only on commercial high end shortwave receivers like the Collins R-390A in those years... The receiver has another "goodie" useful only for the one living in the U.S.A., it covers the NOAA weather alert frequencies in the VHF band.
The receiver has a similar sensitivity as found in Grundig Satellit receivers made in the same years, there is only one AM bandwidth, the dial calibration is acceptable only in the 31 - 16 meter bands, bandspread in the 49 m band important in Europe is not available. The value of the BFO and manual gain control is reduced through the fact, that there is no bandspread dial for the popular 80 and 40 m amateur bands, they are all found in one single very crowded 4 - 9 MHz frequency range.

Summary: The Zenith Trans Oceanic Royal 7000D is a nice collector's item and can still be used as a simple travel radio, as long as You have no high expectations from it's performance on shortwaves, it performs well on mediumwaves and in the FM band to listen to Your favourite local stations. There are some improvements in comparison to older radios with the BFO, two bandwidth filters and manual R.F. gain control, but You cannot make much use of these features as the receiver's bandspread is poor in many important shortwave broadcast and amateur radio bands.
The Royal 7000 is a classic in shortwave travel radio design, it's concept has been adopted in several later receivers, like the Sony Earth Orbiter CRF-5090 and several other radios produced in the Far East.

weitere Lektüre:
d: Zenith Trans-Oceanic Royal D7000 im www.radiomuseum.org
e: The Zenith Trans-Oceanic - the Royalty of Radios, Bryant and Cones, Schiffer Publishing Ltd.

© Martin Bösch 4.2.2009