I have a yaesu radio in my boat since early 1995 hook to the battery line 12 volts 700 amps, now i want to install a second radio similar to the one in the boat in a shack where i have normal 110 ACvolts 60 h , my q is can i use a power adaptor input 110ACv output DC12 v 200mA original from sony for sony telephones, to operate this radio, thanks
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To run an HF transceiver (100 W), the radios normally want to see up to 20 - 35 watts of power available at 12 volts. You earlier referenced the FT-990 HF transmitter, which takes a normal AC voltage input from a line cord. Normally a 20 amp circuit would suffice. Since you did not specify if the radio has the internal heavy duty internal AC switching power supply. For an 110 V connection, the unit requires an 8 amp fuse, and 4 amp for 220. I have included a link where you can download the manual for reference: http://www.download.n7tgb.net/yaesu/FT990/FT-990_Manual.pdf
Red wire w/purple tracer is 12 volt (+) supply to ignition switch. Purple wire is switched 12 volts that supplies 12 volts (+) to the circuits that are turned on by the ignition switch. If they are getting hot something in one of those circuits is drawing excessive power. This should cause the engine fuse to open the circuit to protect any damage. These early direct injected engines are very sensitive to voltage deficiencies. I would begin with the battery: make sure it has sufficient cranking amps, more is better. 800 - 1000 Cold Cranking Amps is a little more than minimum spec but that is what I would recommend. Make sure the battery connections are clean and secure, NO WING NUTS! Battery connections should be secured with an external tooth lock washer at the bottom of the stud followed by the engine cable so the washer bites into the lead and the cable lug. The cables should be marine quality tinned copper with a secure connection to a tinned copper lug. The cable must be sufficient size for the distance run. These engines and the electronics they are equipped with require good clean 12 volts. They can sound like they are cranking fast enough, like the battery is strong enough and not have enough to power the ECU/EMM and injectors. The major benefit of the newer E-Tecs over these early Direct Injected and Ficht outboards is the stator output and its ability to power the electronics without the dependency on the battery. The battery cranks the engine and the more advanced stator and flywheel magnets supply the voltage for the electronics.
Hope this helps. Make sure the correct fuse is installed in this engine. There are multiple fuses in the power distribution panel on the starboard side of the engine. They are all 10 amp ATM fuses.
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That is about the nominal full-charge voltage on that battery pack. If the radio works, use it, let the battery run mostly down and recharge it. The FT-60 is a great radio, and mine shows between 7.4 and 7.8V with a fully charged battery, so yours is probably OK.
That may be a decent nominal voltage for the first charge. Use the radio until the battery is low and then recharge for another 12-hour cycle. That battery pack is notorious for not taking a full charge first time it's charged up.
It sounds like perhaps you have CTCSS turned on so it's blocking received signals that aren't using sub-audible tones. Make sure the "TSQ" indicator is not showing. Most Yaesu radios have the SQU or "T.SQ" option easily found in their menu structure..
Cut the battery wires where they hook up to the machine. When cut they might need some more wire spliced to them. Get some alligator clips to put on your red and black wires to hook right to your boat battery. When not in use on the boat get a small 12 volt battery, cheaper then two 6 volt disposables.
If a boat is anything like a car, the amp's negative post should not be connected to the battery, but to the ground of the boat. In a car, the entire chassis is grounded to the negative terminal, so when you run a line from the positive terminal of the battery to the positive post on the amp, and a line from the negative post on the amp to the chassis it is a complete circuit. I highly recommend placing a fuse on the positive line from the battery to the amp. Wiring this way prevents the amp from blowing up your battery, as well as prevents the battery from blowing your amp. Hope it works.