In article ,
says...

www.qfxusa.com/Pdf/R-18US.pdf

I was at a local Salvation Army store and found this radio.
QuantumFX
Model: R-18US. AM/FM/SW1-SW7 RADIO WITH USB/SD BUILT-IN

The USB flash drive and SD card ports play MP3 music.

Everything works except the telescoping antenna is broken off (that's
easy to fix, as soon as I find one).

But I'm a little confused. In the battery compartment it says to use UM1
1.5v. The PDF file (above) says rechargable batteries. And there is a
plug for a wall wart listed at 6V on the radio.

In the PDF file it also says D cells.

I dont do much with rechargable batteries. Are these UM1 the D cell
equivalant rechargables?
Just curious, I only intend to run it from the built in AC cord.

This radio was made in 2012 (sticker inside battery compartment).

This is the first portable radio I have ever seen that has a USB and SD
card for MP3 music, and with 7 shortwave bands plus AM and FM it does a
lot. Well worth the $5 I paid.

One other thing, there is a sticker on it that says it has 1000 watts
P.M.P.O HQ sound system.

YEA RIGHT..... 1000W from a 5" mono speaker powered by 4 D cells. Talk
about bull**** advertising....

Has anyone ever heard of a P.M.P.O power rating?

Either way, for mono, it has decent sound, which may output 5 watts
maximum....

I bet this was a fairly costly radio when it was new....

Back to looking for a schematic for it. I dont really need one, I just
like to have them for everything I own. So far no luck finding one.


Peak momentary power out. I think, but not sure I have heard it as peak
music power. Somekind of advertising bull. I have seen lots of
computer speakers rated for 100 watts or more and inside the box is a 2
watt or less speaker.

It is sort of like a radar pulse where for a microsecond you pulse out
thousands of watts, but the average on the tube is about 5 watts.

Think of it as a capacitor discharging. It will dump almost the whole
load in a microsecond. Same as some newer batteries like in the
emergency car starters that fit in a glove compartment. They will dump
out a few hundred amps for about 3 seconds to get the car engine to
rotate once or twice to get you started.