| Vacuum Tube Voltmeter V2  | 
			1945 ?? | 
			Equipment | 
			3 - 6H6 | 
			4 | 
			  | 
			1S | 
			  | 
			  | 
		
	
		
		
			| HBR-5   | 
			1947 ? | 
			Commercial Re | 
			5 - 1T4 | 
			1 | 
			  | 
			4S | 
			  | 
			  | 
		
	
		
		
			| Signal Tracer T-1  | 
			1948  | 
			Equipment | 
			3 - 6SJ7 | 
			1 | 
			  | 
			1S | 
			  | 
			  | 
		
	
		
		
			| Vacuum Tube Voltmeter (VTVM) V-5A  | 
			1948  | 
			Equipment | 
			2 - 6H6 | 
			1 | 
			  | 
			18S | 
			  | 
			  | 
		
	
		
		
			| Condenser Checker C-1  | 
			1948 ? | 
			Equipment | 
			2 - 1629 | 
			5 | 
			  | 
			2S | 
			1F | 
			  | 
		
	
		
		
			| Belmont Raytheon - Television Receiver Kit   | 
			1949  | 
			Television | 
			18 - 7JP4 | 
			2 | 
			  | 
			  | 
			  | 
			  | 
		
	
		
		
			| Signal Generator G-5  | 
			1949  | 
			Equipment | 
			2 - 6SN7 | 
			1 | 
			  | 
			1S | 
			  | 
			  | 
		
	
		
		
			| FM Tuner FM-1  | 
			1949 ? | 
			Radio | 
			2 - 14F8 | 
			7 | 
			  | 
			4S | 
			  | 
			  | 
		
	
		
		
			| AR-1  | 
			1949–51  | 
			Radio | 
			5 - 12K8 | 
			3 | 
			  | 
			6S | 
			  | 
			  | 
		
	
		
		
			| FM Tuner Kit FM-2  | 
			1950  | 
			Radio | 
			8 - 6SH7 | 
			2 | 
			  | 
			1S | 
			  | 
			  | 
		
	
		
		
			| Battery Eliminator BE-2  | 
			1950 ? | 
			Equipment | 
			 | 
			2 | 
			  | 
			1S | 
			  | 
			  | 
		
	
		
		
			| Broadcast Receiver BR-1  | 
			1950 ? | 
			Radio | 
			5 - 12K8 | 
			2 | 
			  | 
			5S | 
			  | 
			  | 
		
	
		
		
			| Broadcast Receiver BR-1E [export] | 
			1950 ? | 
			Radio | 
			5 - 12K8 | 
			1 | 
			  | 
			1S | 
			  | 
			  | 
		
	
		
		
			| Impedance Bridge IB-1  | 
			1950 ? | 
			Equipment | 
			 | 
			2 | 
			  | 
			3S | 
			  | 
			  | 
		
	
		
		
			| Vacuum Tube Voltmeter (VTVM) V-4  | 
			1950 ? | 
			Equipment | 
			2 - 6SN7 | 
			2 | 
			  | 
			2S | 
			  | 
			  | 
		
	
		
		
			| Oscilloscope O-8  | 
			1950 ?? | 
			Equipment | 
			11 - 6J5 | 
			8 | 
			  | 
			1S | 
			  | 
			  | 
		
	
		
		
			| Signal Generator SG-6  | 
			1950 ?? | 
			Equipment | 
			 | 
			4 | 
			  | 
			1S | 
			  | 
			  | 
		
	
		
		
			| Condenser Checker C-2  | 
			1950–52 ? | 
			Equipment | 
			2 - 12A6 | 
			4 | 
			  | 
			2S | 
			  | 
			$ | 
		
	
		
		
			| Tube Checker TC-1  | 
			1950–53 ? | 
			Equipment | 
			 | 
			8 | 
			  | 
			2S | 
			  | 
			$ | 
		
	
		
		
			| TV Alignment Generator TS-2  | 
			1950–53 ? | 
			Equipment | 
			5 - 7193 | 
			4 | 
			  | 
			1S | 
			  | 
			  | 
		
	
		
		
			| LF-Generator G-2  | 
			1950–53 ?? | 
			Equipment | 
			5 - 6SL7GT | 
			6 | 
			  | 
			1S | 
			  | 
			  | 
		
	
		
		
			| Audio Preamp WA-P1 (WAP1)  | 
			1951  | 
			Ampl/Mixer | 
			2 - 12AY7 | 
			5 | 
			  | 
			1S | 
			  | 
			  | 
		
	
		
		
			| Electronic Switch S-2  | 
			1951 ? | 
			Equipment | 
			5 - 6SN7 | 
			7 | 
			  | 
			1S | 
			  | 
			  | 
		
	
		
		
			| Handitester M-1  | 
			1951 ? | 
			Equipment | 
			 | 
			11 | 
			  | 
			3S | 
			  | 
			  | 
		
	
		
		
			| Impedance Bridge IB-1B  | 
			1951 ? | 
			Equipment | 
			 | 
			8 | 
			  | 
			2S | 
			  | 
			  | 
		
	
		
		
			| Oscilloscope O-6  | 
			1951 ? | 
			Equipment | 
			10 | 
			1 | 
			  | 
			  | 
			  | 
			  | 
		
	
		
		
			| Vacuum tube voltmeter V-4A  | 
			1951 ? | 
			Equipment | 
			2 - 6H6 | 
			3 | 
			  | 
			17S | 
			  | 
			  | 
		
	
		
		
			| Vacuum Tube Voltmeter (VTVM) V-5  | 
			1951 ? | 
			Equipment | 
			2 - 7A6 | 
			4 | 
			  | 
			1S | 
			  | 
			  | 
		
	
		
		
			| Main Amplifier WA-1  | 
			1951 ?? | 
			Ampl/Mixer | 
			5 - 6SN7 | 
			7 | 
			  | 
			  | 
			  | 
			  | 
		
	
		
		
			| Square Wave Generator SQ-1  | 
			1951–57  | 
			Equipment | 
			4 - 6SL7 | 
			4 | 
			  | 
			1S | 
			  | 
			  | 
		
	
		
		
			| Audio Frequency Meter AF-1  | 
			1951–59 ? | 
			Equipment | 
			4 - 6SJ7 | 
			6 | 
			  | 
			2S | 
			  | 
			  | 
		
	
		
		
			| Audio Generator AG-7  | 
			1952  | 
			Equipment | 
			6 - 6J7 | 
			1 | 
			  | 
			6S | 
			  | 
			  | 
		
	
		
		
			| Grid Dip Meter GD-1  | 
			1952  | 
			Equipment | 
			1 - 6AF4 | 
			1 | 
			  | 
			  | 
			  | 
			  | 
		
	
		
		
			| Pre-Amplifier, Williamson-type Amplifier, and Power Supply WA-P1, WA-A1  | 
			1952  | 
			Kit | 
			7 - 12AX7 | 
			2 | 
			  | 
			1S | 
			  | 
			  | 
		
	
		
		
			| Voltage Calibrator VC-1  | 
			1952  | 
			Equipment | 
			1 - 6AL5 | 
			5 | 
			  | 
			  | 
			  | 
			  | 
		
	
		
		
			| 5" Oscilloscope Kit O-7 (0-7)  | 
			1952  | 
			Equipment | 
			10 - 6J5 | 
			3 | 
			  | 
			1S | 
			  | 
			  | 
		
	
		
		
			| Battery Tester BT-1  | 
			1952 ? | 
			Equipment | 
			 | 
			3 | 
			  | 
			4S | 
			  | 
			  | 
		
	
		
		
			| Broadcast Receiver BR-2  | 
			1952 ? | 
			Radio | 
			5 - 12BE6 | 
			12 | 
			  | 
			1S | 
			  | 
			  | 
		
	
		
		
			| High Voltage Probe IMA-100-11  | 
			1952 ? | 
			Equipment | 
			 | 
			2 | 
			  | 
			3S | 
			  | 
			  | 
		
	
		
		
			| Signal Generator SG-7  | 
			1952 ? | 
			Equipment | 
			2 - 6C4 | 
			5 | 
			  | 
			1S | 
			  | 
			$ | 
		
	
		
		
			| Signal tracer T2  | 
			1952 ? | 
			Equipment | 
			3 - 6SH7 | 
			10 | 
			  | 
			1S | 
			  | 
			  | 
		
	
		
		
			| Amplifier A-9  | 
			1952 ?? | 
			Ampl/Mixer | 
			6 - unknown_Tube | 
			12 | 
			  | 
			  | 
			  | 
			  | 
		
	
		
		
			| Battery Eliminator BE-3  | 
			1952 ?? | 
			Power-S | 
			 | 
			3 | 
			  | 
			  | 
			  | 
			  | 
		
	
		
		
			| Laboratory Power Supply PS-1  | 
			1952 ?? | 
			Power-S | 
			3 - 1619 | 
			1 | 
			  | 
			1S | 
			  | 
			  | 
		
	
		
		
			| Communications Receiver AR-2  | 
			1952–55  | 
			Amateur-R | 
			6 - 12BE6 | 
			7 | 
			  | 
			1S | 
			  | 
			  | 
		
	
		
		
			| Audio Wattmeter AW-1  | 
			1952–59 ? | 
			Equipment | 
			1 - 12AU7 | 
			3 | 
			  | 
			3S | 
			  | 
			$ | 
		
	
		
		
			| Antenna Impedance Meter AM-1  | 
			1952–60  | 
			Equipment | 
			 | 
			5 | 
			  | 
			11S | 
			  | 
			$ | 
		
	
		
		
			| VFO VF-1  | 
			1952–61 ? | 
			Amateur-D | 
			1 - 6AU6 | 
			13 | 
			  | 
			1S | 
			  | 
			  | 
		
	
		
		
			| Grid Dip Meter GD-1A  | 
			1953  | 
			Equipment | 
			1 - 6AF4 | 
			6 | 
			  | 
			1S | 
			  | 
			$ | 
		
	
		
		
			| Signal Generator SG-8  | 
			1953  | 
			Equipment | 
			2 - 12AU7 | 
			28 | 
			  | 
			8S | 
			1F | 
			$ | 
		
	
		
		
			| AC Voltmeter AV-2  | 
			1953 ? | 
			Equipment | 
			2 - 6AU6 | 
			6 | 
			  | 
			1S | 
			  | 
			$ | 
		
	
		
		
			| Amplifier A-7B  | 
			1953 ? | 
			Ampl/Mixer | 
			5 - 12J5 | 
			5 | 
			  | 
			1S | 
			  | 
			  | 
		
	
		
		
			| Amplifier A-7C  | 
			1953 ? | 
			Ampl/Mixer | 
			6 - 12SH7 | 
			4 | 
			  | 
			1S | 
			  | 
			  | 
		
	
		
		
			| Amplifier A-7E  | 
			1953 ? | 
			Ampl/Mixer | 
			6 - 12SL7 | 
			8 | 
			  | 
			1S | 
			  | 
			  | 
		
	
		
		
			| Antenna Coupler AC-1  | 
			1953 ? | 
			Amateur-D | 
			 | 
			2 | 
			  | 
			1S | 
			  | 
			$ | 
		
	
		
		
			| Audio Amplifier A-9A  | 
			1953 ? | 
			Ampl/Mixer | 
			6 - 12AX7 | 
			2 | 
			  | 
			1S | 
			  | 
			  | 
		
	
		
		
			| Audio Generator AG-8  | 
			1953 ? | 
			Equipment | 
			4 - 6SJ7 | 
			6 | 
			  | 
			2S | 
			  | 
			$ | 
		
	
		
		
			| Audio Oscillator AO-1  | 
			1953 ? | 
			Equipment | 
			3 - 6SN7 | 
			1 | 
			  | 
			1S | 
			  | 
			$ | 
		
	
		
		
			| Bar Generator BG-1  | 
			1953 ? | 
			Equipment | 
			1 - 12AT7 | 
			2 | 
			  | 
			1S | 
			  | 
			  | 
		
	
		
		
			| Intermodulation Analyzer IM-1  | 
			1953 ? | 
			Equipment | 
			4 - 12AX7 | 
			5 | 
			  | 
			1S | 
			  | 
			  | 
		
	
		
		
			| Isolation Transformer IT-1  | 
			1953 ? | 
			Equipment | 
			 | 
			10 | 
			  | 
			1S | 
			  | 
			$ | 
		
	
		
		
			| Record Player RP-1  | 
			1953 ? | 
			R-Player | 
			4 - 12AX7 | 
			2 | 
			  | 
			1S | 
			  | 
			  | 
		
	
		
		
			| Tube Checker TC-2  | 
			1953 ? | 
			Equipment | 
			 | 
			27 | 
			  | 
			1S | 
			1F | 
			$ | 
		
	
		
		
			| TV Alignment Generator TS-3  | 
			1953 ? | 
			Equipment | 
			6 - 12AT7 | 
			4 | 
			  | 
			1S | 
			  | 
			  | 
		
	
		
		
			| Vibrator Tester VT-1  | 
			1953 ? | 
			Equipment | 
			 | 
			4 | 
			  | 
			1S | 
			1F | 
			  | 
		
	
		
		
			| Voltage Calibrator VC-2  | 
			1953 ? | 
			Equipment | 
			1 - 6AL5 | 
			3 | 
			  | 
			1S | 
			  | 
			  | 
		
	
		
		
			| AR-1E  | 
			1953 ?? | 
			Radio | 
			6 - 1626 | 
			1 | 
			  | 
			  | 
			  | 
			  | 
		
	
		
		
			| Williamson Type Amplifier W-2M  | 
			1953 ?? | 
			Ampl/Mixer | 
			5 - 6SN7 | 
			5 | 
			  | 
			  | 
			  | 
			  | 
		
	
		
		
			| Amateur-Transmitter AT-1  | 
			1953–56  | 
			Amateur-T | 
			3 - 6AG7 | 
			11 | 
			  | 
			1S | 
			  | 
			$ | 
		
	
		
		
			| Battery Eliminator BE-4  | 
			1953–60  | 
			Equipment | 
			 | 
			8 | 
			  | 
			1S | 
			  | 
			  | 
		
	
		
		
			| Grid Dip Meter GD-1B  | 
			1953–61  | 
			Equipment | 
			1 - 6AF4 | 
			7 | 
			  | 
			2S | 
			  | 
			$ | 
		
	
		
		
			| Condenser Substitution Box CS-1  | 
			1953–62 ? | 
			Equipment | 
			 | 
			5 | 
			  | 
			2S | 
			  | 
			  | 
		
	
		
		
			| Resistance Substitution Box RS-1  | 
			1953–62 ?? | 
			Equipment | 
			 | 
			1 | 
			  | 
			  | 
			  | 
			  | 
		
	
		
		
			| Audio Amplifier A-9B  | 
			1954  | 
			Ampl/Mixer | 
			6 - 12AX7 | 
			11 | 
			  | 
			  | 
			  | 
			  | 
		
	
		
		
			| Preamplifier WA-P2  (WAP2)  | 
			1954  | 
			Ampl/Mixer | 
			3 - 12AU7 | 
			13 | 
			  | 
			12S | 
			  | 
			  | 
		
	
		
		
			| Vacuum Tube Voltmeter (VTVM) V-6  | 
			1954  | 
			Equipment | 
			2 - 6H6 | 
			14 | 
			  | 
			1S | 
			  | 
			  | 
		
	
		
		
			| Amplifier Williamson Type W-2  | 
			1954 ? | 
			Ampl/Mixer | 
			7 - 12AY7 | 
			1 | 
			  | 
			  | 
			  | 
			  | 
		
	
		
		
			| Decade Resistance Box DR-1  | 
			1954 ? | 
			Equipment | 
			 | 
			1 | 
			  | 
			1S | 
			  | 
			  | 
		
	
		
		
			| Demodulator Probe 337-B  | 
			1954 ? | 
			Equipment | 
			 | 
			1 | 
			  | 
			  | 
			  | 
			  | 
		
	
		
		
			| Dual Record Player Kit RP-2  | 
			1954 ? | 
			R-Player | 
			4 | 
			2 | 
			  | 
			  | 
			  | 
			  | 
		
	
		
		
			| Impedance Bridge IB-2  | 
			1954 ? | 
			Equipment | 
			4 - 1U4 | 
			1 | 
			  | 
			  | 
			  | 
			  | 
		
	
		
		
			| Low Capacity Probe 342  | 
			1954 ? | 
			Equipment | 
			 | 
			2 | 
			  | 
			  | 
			  | 
			  | 
		
	
		
		
			| Multimeter MM-1  | 
			1954 ? | 
			Equipment | 
			 | 
			6 | 
			  | 
			1S | 
			  | 
			$ | 
		
	
		
		
			| Oscilloscope O-9  | 
			1954 ? | 
			Equipment | 
			11 - 6AB4 | 
			1 | 
			  | 
			  | 
			  | 
			  | 
		
	
		
		
			| Peak to Peak Probe 338-B  | 
			1954 ? | 
			Equipment | 
			 | 
			2 | 
			  | 
			  | 
			  | 
			  | 
		
	
		
		
			| Radio Frequency Probe 309-B  | 
			1954 ? | 
			Equipment | 
			 | 
			1 | 
			  | 
			  | 
			  | 
			  | 
		
	
		
		
			| Variable Voltage Regulated Power supply PS-2  | 
			1954 ? | 
			Power-S | 
			4 - 6SJ7 | 
			1 | 
			  | 
			  | 
			  | 
			  | 
		
	
		
		
			| Visual-Aural Signal Tracer T-3  | 
			1954 ? | 
			Equipment | 
			5 - 12C8 | 
			9 | 
			  | 
			2S | 
			  | 
			$ | 
		
	
		
		
			| Williamson Type Amplifier W-3M  | 
			1954 ? | 
			Ampl/Mixer | 
			5 - 6SN7GT | 
			12 | 
			  | 
			1S | 
			  | 
			  | 
		
	
		
		
			| Laboratory Oscilloscope O-10  | 
			1955  | 
			Equipment | 
			11 - 6AB4 | 
			14 | 
			  | 
			3S | 
			  | 
			$ | 
		
	
		
		
			| Oscilloscope OM-1  | 
			1955  | 
			Equipment | 
			8 - 12AU7 | 
			1 | 
			  | 
			  | 
			  | 
			  | 
		
	
		
		
			| Q-Meter QM1  | 
			1955  | 
			Equipment | 
			4 - 12AT7 | 
			19 | 
			  | 
			19S | 
			2F | 
			$ | 
		
	
		
		
			| LP-1 Linearity Pattern Generator   | 
			1955 ? | 
			Equipment | 
			5 - 6J6 | 
			5 | 
			  | 
			  | 
			  | 
			  | 
		
	
		
		
			| Peak-to-Peak Voltage Probe 338-C  | 
			1955 ? | 
			Equipment | 
			 | 
			 | 
			 | 
			4S | 
			  | 
			  | 
		
	
		
		
			| Audio Generator AG-8/D  | 
			1955 ?? | 
			Equipment | 
			4 - 6SJ7 | 
			3 | 
			  | 
			  | 
			  | 
			$ | 
		
	
		
		
			| Monaural Tape Electronics TE-1  | 
			1955 ?? | 
			R-Player | 
			 | 
			15 | 
			  | 
			  | 
			  | 
			  | 
		
	
		
		
			| 309C  | 
			1955 ?? | 
			Equipment | 
			 | 
			2 | 
			  | 
			  | 
			  | 
			  | 
		
	
		
		
			| Vacuum Tube Voltmeter V-7  | 
			1955/55  | 
			Equipment | 
			2 - 6AL5 | 
			2 | 
			  | 
			  | 
			  | 
			$ | 
		
	
		
		
			| DX-100  | 
			1955–57  | 
			Amateur-T | 
			14 - 6AU6 | 
			10 | 
			  | 
			4S | 
			  | 
			  | 
		
	
		
		
			| Laboratory Generator LG-1  | 
			1955–60 ? | 
			Equipment | 
			3 - 6AF4 | 
			12 | 
			  | 
			1S | 
			  | 
			$ |