STANDARD C-1208

STANDARD C-1208

The "Black-Box"-radio. This STANDARD mobile-radio for 145Mc was a very comfortable radio with a full-remote-control microphone. Additional it is able to receive on 430Mc amateur-radio. After a small modding transmission and reception-range could be expanded a lot. Its sister for 70cm was called STANDARD C-4208 and transmits on 430Mc amateur radio band.

Every STANDARD radio had specials. This radio's special is the small size and the remote-mike. So users are able to place the "black-box" in the trunk and control the radio completely by mike. The C-1208 and C-4208 series have been one of the first radios that were able to be connected to 1k2 or 9k6 packet-radio modems without modding because those radios had a special plug for packet already on board.

Reparatur und Service zum STANDARD C-1208

On many STANDARD C-1208 after some years display starts blinking. Sometimes blinking will stop again and the radio will work as it should. During the blinking receiver and transmitter don't work. What has happend? The anser has took me some hours to find and is not satisfying: A blinking display mostly means that PLL doesn't lock. Because of the small size many stages of this radio had to be built in a very small size or even to be integrated in other stages. This was done on the PLL-unit. PLL, modulation and base-signal all are being generated in one unit. This unit is a high-integrated circuit called KH036Y. You can see this circuit in the picture under this text. And now here comes the sad answer for this blinking problem: The integrated circuit ( IC ) KH036Y runs under pretty much current that leads to a high temparature inside circuit. After some years high temparature leads to damage of the PLL-circuit. All signals are ok - except the PLL-signal. Even if you try to get the parts out of the metal-case you won't be able to repair the broken circuit because it is impossible to get spare-parts. And this is the sad problem of all C-1208 with blinking display.

Broken unit KH036Y6010. not repairable.

technische Daten

TX-range144 – 146MHz
Receiver range118 – 142MHz; 250 – 328MHz; 430 – 440MHz
ModeFM mit maximal +-5kHz Hub, Empfang auch in AM
Crossband oparationno
rf-outputmax. 50W, mid 10W, low 2W
power-steps3 ( high, mid, low )
Empfindlichkeit 12dB SINADca. 0,18µV
Voltage range input13,8V DC
Current consumption RXweniger als 0,5A im Energiesparmodus
current consumption TXmax. 11A auf hoher Leistungsstufe
audio-output3W an 4 Ohm
steps5, 10, 12,5, 15, 20, 25, 50, 100kHz und 1MHz
tone-call1750Hz
DTMFja, Option CTD1200 notwendig
Display illiminationja, orange
CTCSSja, Option CTN1200 notwendig
Measurement WxHxD140 x 30 x 147mm
backsidemetall
FrontKunststoff
antenna connectorPL = UHF
connector external mikeja, Mikrofonbuchse, 600 Ohm Impedanz
  
weightca. 750g
Overview technical details

Zubehör zum STANDARD C-1208

MikrofonverlängerungskabelCAW-56x, und CAW-57x
CTCSS-unitCTD-1200
DTMF-unitCTN-1200

Technical documents

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