Question about Radio Communications
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
Posted on Apr 02, 2015
According to the manual, IF you have the DC power option installed you need to connect to a source capable of 20A at 13.8VDC. If you're going to run it off an inverter in a vehicle (not recommended - you'll have all kinds of noise), you'll need an inverter capable of probably at least 300W (maybe more for the radio to be stable).
Posted on Apr 07, 2015
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Posted on Jan 02, 2017
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