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VE6AQO: MB103 based portable radio

The picture below shows Semco MB103 based VHF portable AM/FM (SSB receive only) transmitter and receiver. A DL6SW 2m to 10m converter and a home made 220MHZ to 10m converter are used to receive signals in these bands on 10m. An IC based FM demodulator with the SO-41 is used at 455Khz. An TBA621 based audio Amplifier furnishes speaker operation. The transmitter uses a PLL with the MC145152 at either 2m or 220MHz followed by multi stage amplifiers to produce about 1-2W of carrier power. This is still a work in progress. (Bild1)

The next picture shows a 2m synthesized handheld transceiver, built in 1982. Without using a micro computer it has 32 memories, two independent VFOs, programmable channel spacing and repeater shifts. The heart of the frequency control system is an Intersil 7217 LSI. A battery backed 4-bit CMOS RAM stores all data. RF power output is 3W or 300mW. (Bild2)

MB103_portable.jpg (58394 bytes)
MB103 144/220MHz
AM/FM Portable Gerät
(2001)		 2m_Handheld_1982.jpg (22803 bytes)

2m Handfunkgerät
(1982)


 VE6AQO_2mTRCV_1979.jpg (40651 bytes)
2m
Transceiver
TX: FM, 25W
RX:AM/FM/SSB
ca. 1979		 VE6AQO_Station_1979.jpg (53578 bytes)

VE6AQO
Station - 1980		 VE6AQO_HF_millivolts_1979.jpg (38530 bytes)

HF Millivoltmeter (10KHz-1500MHz)
nach UKW Berichten		 VE6AQO_Netzgeraet_1979.jpg (40703 bytes)

0-30V, 5/10A
Labornetzgerät
(1987)		 MB10RX.jpg (26651 bytes)

MB103 RX mit DL6SW 2-m- Konverter,
AM/FM/SSB
(Bayern 1974)
2m Handfunkgeraet_1982.jpg (110452 bytes) 2m Transceiver_1978.jpg (106004 bytes) slide03.jpg (43205 bytes)
Home Made 2-m Multi-Mode
Transceiver, ca. 1985		 Skalenantrieb
für
220MHz MB103 Transceiver		 skalen01mod.jpg (24348 bytes) skalen02mod.jpg (23820 bytes)
CNC1M2.JPG (86896 bytes)
Selbstbau Platinenfräsmaschine		 0-300 Volt Selbstbau
Labornetzgerät		 300V Netzgeraet1.jpg (93216 bytes) 300V Netzgeraet3.jpg (130072 bytes) 300V Netzgeraet2.jpg (93548 bytes)
10GHZ Empfaenger.jpg (102680 bytes)
10 GHZ Breitband FM RX und TX		 Auswahl einiger 220MHz Platinen und Bausteinen 220MHZ_Platinen.jpg (94232 bytes) 220MHZ auf 28Mhz Empfangskonverter mit J-FET Eingangsstufe 220MHZ Converter.jpg (89808 bytes) 220MHZ PLL Synthesizer
im 25KHz Raster		 220MHZ_Synthesizer.jpg (104932 bytes)

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