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Discussion in 'Amplifiers' started by apmr0911, Aug 19, 2011.
btw sorry for my bad english =)
Are you driving it with the right amount of RF power to the amp input?
Too much RF power input has been known to cause these amps to fail; be careful not to over-drive the input.
See the specs below:
From H&Y Electronics:
* MODES: AM/FM/SSB/CW
*FREQUENCY RANGE: 20-30mhz
*POWER SUPPLY/voltage: 12-14Vcc
*IN/OUT ENERGY/amperage: 12-30A
*RF INPUT POWER: 1-6W AM/FM - 1-12W SSB/CW
*OUTPUT POWER: 60-250W AM/FM - 120-450W SSB/CW
* FUSES: 3x10AMP
Since this amp will draw no more than 30 amps under full load, I would have to say that I wouldn't expect more than 250 watts on AM mode and no more than 320 watts on SSB mode when driven with the proper RF input power.
I don't know what kind of devices they use in this amp - 2290's, 1446's, 2879's (doubtful), or MOSFET's (most likely for that price); but I wouldn't over-drive it.
He's using 8 guage wire.
Sent from my phone.
Saw that; thanks m42 . . .
First thing I would do, is make sure that none of the power connections from the battery or at the fuses are getting hot or warm. That would indicate resistance to current flow. If so; then corrections would need to be made first.
If all of the connections and connectors are correct; then I would have to say that some of the output devices might have failed. If the output devices are MOSFETs; then that wouldn't surprise me too much either.
and is that part what I dont undertand fine because y english sux I dont know if is 6mm2 of the cable or the core of the cable if u can see here it say the cable 8 is 3mm2 the core American Wire Gauge table and AWG Electrical Current Load Limits with skin depth frequencies but if is not the core and is the cable then is ok because is as 6mm2 =)
So how do you figure it's "built better" ? Did they fire the 8 year olds and now have ten year olds doing all the soldering? Just wondering how you decided it was built better.