<<Hello all, wondering if anyone has any experience with portable=C2=A0
power. The
'battery' that you can buy in a hardware store that gives both ac/dc=C2=A0=
power. I
purchased one last week and want to use it for all night recording=C2=A0
with my
Fostex Fr2le and 2 X AT4022 mics. It's a powerpack 300 by Xantrex.=C2=A0
When i plug
the gear into it, there is a very (hardly audible) hum from it, >>
Does this unit provide 120 volts via an inverter? If so the hum is=C2=A0
caused by distortion in the 60Hz waveform which the Fostex power=C2=A0
supply is unable to effectively filter out. Almost no available power=C2=A0=
inverters provide a true clean sine wave output due to the expense &=C2=A0=
the fact that clean power is almost never an issue for the intended=C2=A0
application. The solution would be to find a battery source which can=C2=A0=
directly power the DC circuits of the Fostex, bypassing the 120VAC to=C2=A0=
12VDC (or whatever it takes) Fostex power supply.
Scott Fraser
------------------------------------
"While a picture is worth a thousand words, a
sound is worth a thousand pictures." R. Murray Schafer via Bernie Krause.
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