MODEL	TUBES	OUTPUT POWER	BANDS	TUNING	T / R SWITCHING	PRIMARY POWER	DIMENSIONS
87A	Eimac 3CX800 (x2)	Legal Limit	160m - 10m	Fully Automatic	QSK, PIN Diode (keying voltage = 12vdc,12ma)	240vac Hipersil Xfmr (3.5kVA)	7"h x 17.3"w x 16.5"d
99	Svetlana 4CX800 (x2)	Legal Limit	160m - 10m	Manual	QSK, Vacuum Relay (keying voltage = 25vdc,7ma)	120/240vac Unisil Xfmr (3+ kVA)	7.5"h x 17"w x 15.5"d
91B	Svetlana 4CX800 (x2)	Legal Limit	160m - 10m	Manual	QSK, Vacuum Relay (keying voltage = 25vdc,7ma)	120/240vac Unisil Xfmr (3+ kVA)	7.5"h x 17"w x 15.5"d
89	Eimac 3CX800 (x2)	Legal Limit	160m - 10m	Manual	QSK, PIN Diode (keying voltage = 12vdc,12ma)	240vac Hipersil Xfmr (3.5kVA)	7"h x 17.3"w x 16.5"d
86	Eimac 3CX800 (x2)	Legal Limit	160m - 10m	Manual	QSK, PIN Diode (keying voltage = 10vdc,1ma)	240vac Hipersil Xfmr (3.5kVA)	7.5"h x 17"w x 15"d
78	Eimac 8874 (x3)	Legal Limit * *	160m -10m (except 12m)	Manual and Pre-tuned (Bandpass)	QSK, Vacuum Relay (keying voltage = 23vdc,3ma)	120/240vac Hipersil Xfmr (2.4kVA)	7.5"h x 17"w x 14.75"d
77Sx	Eimac 8877 (3CX1500) (x2)	Legal Limit	160m - 10m (except 12m)	Manual	QSK, Vacuum Relay (keying voltage = 20vdc,2ma)	240vac Hipersil Xfmr	11"h x 19"w x 22"d
77Dx	Eimac 8877 (3CX1500) (x1)	Legal Limit	160m - 10m (except 12m)	Manual	QSK, Vacuum Relay (keying voltage = 20vdc,2ma)	240vac Hipersil Xfmr	11"h x 19"w x 22"d
77D	Eimac 8877 (3CX1500) (x1)	Legal Limit	80m - 10m (except 12m)	Manual	QSK, Vacuum Relay (keying voltage = 20vdc,2ma)	240vac Hipersil Xfmr	11"h x 19"w x 22"d
77	Eimac 8877 (3CX1500) (x1)	Legal Limit	80m - 10m (except 12m)	Manual	QSK, Vacuum Relay (keying voltage = 55vdc,85ma)	240vac	9.5"h x 17"w x 17"d
70-V	Eimac 3CV1500 (x1)	Legal Limit	80m - 10m (except 12m)	Manual	Vacuum Relay	240vac	9.5"h x 17"w x 17"d
70-A	Eimac 3CX1000 (x1)	Legal Limit	80m - 10m (except 12m)	Manual	Vacuum Relay	240vac	9.5"h x 17"w x 17"d
76CA *	Eimac 8874 (x3)	Legal Limit * *	160m - 10m (except 12m)	Manual	Open-frame Relay (keying voltage = 25vdc,75ma)	120/240vac Hipersil Xfmr (2.4kVA)	7.5"h x 17"w x 14.75"d
76PA *	Eimac 8874 (x3)	Legal Limit * *	160m - 10m (except 12m)	Manual	Open-frame Relay (keying voltage = 25vdc,75ma)	120/240vac (1.5kVA Xfmr)	7.5"h x 17"w x 14.75"d
76A *	Eimac 8874 (x2)	Legal Limit * *	160m - 10m (except 12m)	Manual	Open-frame Relay (keying voltage = 25vdc,75ma)	120/240vac (1.5kVA Xfmr)	7.5"h x 17"w x 14.75"d
76C	Eimac 8874 (x3)	Legal Limit * *	160m - 10m (except 12m)	Manual	Open-frame Relay (keying voltage = 25vdc,75ma)	120/240vac Hipersil Xfmr (2.4kVA)	7.5"h x 17"w x 14.95"d
76P	Eimac 8874 (x3)	Legal Limit * *	160m - 10m (except 12m)	Manual	Open-frame Relay (keying voltage = 25vdc,75ma)	120/240vac (1.5kVA Xfmr)	7.5"h x 17"w x 14.95"d
76	Eimac 8874 (x2)	Legal Limit * *	160m - 10m (except 12m)	Manual	Open-frame Relay (keying voltage = 25vdc,75ma)	120/240vac (1.5kVA Xfmr)	7.5"h x 17"w x 14.95"d
374A	Eimac 8874 (x2)	Legal Limit * *	160m - 10m (except 12m)	Manual and Pre-tuned (Bandpass)	Open-frame Relay (keying voltage = 25vdc,75ma)	120/240vac (1.5kVA Xfmr)	7.5"h x 17"w x 14.75"d
374	Eimac 8874 (x3)	Legal Limit * *	80m - 10m (except 12m)	Manual and Pre-tuned (Bandpass)	Open-frame Relay (keying voltage = 23vdc,95ma)	120/240vac	7.5"h x 17"w x 13"d
274	Eimac 8874 (x2)	Legal Limit * *	80m - 10m (except 12m)	Manual	Open-frame Relay	120/240vac	7.5"h x 17"w x 13"d

* NOTE: All 3 models in 76A family have 76A on front panel. Differences are as above. Hipersil transformers are black epoxy coated and have rounded corners.

** NOTE: "Legal Limit" as defined by the FCC when these amps were manufactured was 1 Kw DC INPUT (2 Kw PEP INPUT).