Note
QST, Feb 1969, p. 107.
QST, Aug 1971, p. 116. (RV-550A after Galaxy's merger with Hy-Gain)
The Galaxy RV-550 is a remote variable frequency oscillator (VFO) designed as a companion unit to the Galaxy GT-550 and GT-550A transceivers.
Overview & Design
– Companion Styling: Matches the aesthetics of the GT-550 transceiver, featuring the same 500 kHz tuning dial and large spinner knob.
– Circuitry: Uses a four-transistor VFO circuit for frequency stability.
– Automatic Band Tracking: Does not require a separate bandswitch control. It automatically follows whichever band the GT-550 transceiver is switched to.
– Power & Hookup: Powered by regulated 12 V DC directly from the GT-550 via two interconnecting cables.
The unit features a single four-position FUNCTION switch that controls split-frequency and transceive operations:
– OFF: The RV-550 is inactive (indicated by its dial light turning off), leaving the transceiver to operate in its standard mode.
– REC: The RV-550 controls receiver tuning, while the GT-550 dial sets the transmit frequency.
– XMIT-REC: The RV-550 controls both receive and transmit tuning in transceive mode, bypassing the transceiver's internal VFO.
– XMIT: The RV-550 sets the transmit frequency, while receiver tuning is controlled by the GT-550 dial.
