The "Black-Box"-radio. This STANDARD mobile-radio for VHF and UHF was a very comfortable radio with a full-remote-control microphone. In combination with the option CRC-5700 this black-box becomes a compact radio with direct control, better known as C-5700. STANDARD has released two single-band radios in the same look at the same time: The C-1208 for VHF and the C-4208 for UHF.

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-5708 had been one of the first radios that was 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.

On many STANDARD C-5708 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 ) 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. As well as the C-5708 the C-1208 and the C-4208 have the same problem. And this is the sad problem of all C-5708 with blinking display.

Broken unit. Not repairable.

technische Daten

TX-range144-146MHz und 430-440MHz, erweiterbar
Receiver range144-146MHz und 430-440MHz, erweiterbar
ModeFM, Hub max. +-5kHz
Crossband oparationja, Gerät als Crossband-Relais einsetzbar
Sendeleistung max.auf 2m 50W, auf 70cm 40W bei 13,8V
power-steps3; low = 3W; mid = 10W, high = max
Empfindlchkeitca. 0,2µV
Voltage range input13,8V +-15% DC
Current consumption RXweniger als 1A
Stromaufnahme Sendenmaximal 12A bei voller Sendeleistung
audio-output3W an 4Ohm
Frequenzschritte5; 10; 12,5; 15; 20; 25; 50; 100kHz
tone-call1750Hz in EU-Version, US-Version benötigt Modifikation
DTMFja, Zusatzmodul notwendig
Display illiminationja, orange
CTCSSja, Zusatzmodul notwendig
antenna connectorGemeinsamer N-Anschluss für VHF und UHF
Anschluss für ext. Lautsprecheran Geräterückseite
external supply connectableja, 13,8V; kein Netzteil eingebaut
weightca. 1kg
Overview technical details

Zubehör und Ersatzteile zum STANDARD C-5718

STANDARD ArtikelBeschreibungVerfügbarkeit
CRC-5700Frontpanel für Direktbedienungno longer available
CMP-842einfaches Mikeno longer available
CMP-843Multifunktions-Mikrofonno longer available
CAW-57xSeparations-kitno longer available
CMU-181Speichermodul für 20 Zusatzspeicherno longer available
CMU-182Speichermodul für 200 Zusatzspeicherno longer available
CTD-5700DTMF-Zusatzmodulno longer available
CTN-5700CTCSS-Zusatzmodulno longer available

häufige Fragen zum STANDARD C-5718

Some C-5708 are labeled as C-5700. Difference is, that the C-5700 has a frontpanel ( option CRC-5700 ). The C-5708 has no frontpanel ( black-box ) and will only be controlled by the multi-mike.

Maximum lengt of separation-cable between C-5708 and microphone or frontpanel CRC-5700: 8m

Yes, it is normal that plastic cover on mike will get loose.

Reason for low audio mostly is caused by broken caps in the af-unit.

If your C-5708 won't switch on again most reasen is the switching-transistor.

Origin spare parts are no longer available by STANDARD, YAESU or STABO, radio is out of service.

We no longer provide service and repair for STANDARD radio.

Technical documents

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