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[aprssig] Prius Power for Field Day

Robert Bruninga bruninga at usna.edu
Fri Oct 12 22:09:40 UTC 2007


Rusty,
I don't run HF, but suspect I have noise problems. I think  I
even see reduced receive range on APRS on 2 meters!  But then I
have hacks goiing into and out of the HV battery compartment
which is notoriouis for EMI.  SO much of this coiuld be my own
doing.  Ill have to clean it up someday and see if it improves.
When I first got the prius I did a quick test with a dusty old
CB set sitting in the garage.  Only 2 S units of noise.  Not
much...

Bob
 

> -----Original Message-----
> From: Rusty Hemenway [mailto:nnn0fjk at gmail.com] 
> Sent: Friday, October 12, 2007 3:39 PM
> To: bruninga at usna.edu; 'TAPR APRS Mailing List'
> Subject: RE: [aprssig] Prius Power for Field Day
> 
> Bob
> 
> Is there much/any electrical (RF NOISE) generated by your
mobile power
> supply?  I have a Ford Escape Hybrid (2006) that below 30 MHz 
> wipes all but
> S9+ signals out. One of these days I'll have to replace it, 
> and am just
> wondering if you have similar issues
> 
> Rusty K1GGS
> 
> -----Original Message-----
> From: aprssig-bounces at lists.tapr.org 
> [mailto:aprssig-bounces at lists.tapr.org]
> On Behalf Of Robert Bruninga
> Sent: Friday, October 12, 2007 12:31 PM
> To: 'TAPR APRS Mailing List'
> Subject: [aprssig] Prius Power for Field Day
> 
> Now that I see that the 12 volt power supply works on 240 VDC
> input, I can bring along a few of these to field day, and
power
> every tent's 12 VDC systems from the 220 VDC battery in my
> Prius.  And if the battery runs down to 40% depth of
discharge,
> then the Prius engine automatically starts re-charging it with
> its 10 kW generator. 
> 
> A whole lot quieter than those 120 dB generators that drone on
> all weekend!
> 
> Oh, and if the load is under 200 watts continuous and the sun
is
> shining, then my Prius internal combustion engine will not
even
> crank up.  Till the sun goes down...  See:
> 
> http://www.ew.usna.edu/~bruninga/APRS-SPHEV.html
> 
> Now I am working on 240 VDC connectors so that there is no
> possible way for anyone to plug in the wrong thing to the
DC...
> Oh, and lots of fuses everywhere...
> 
> Bob, WB4APR
> 
> > -----Original Message-----
> > From: aprssig-bounces at lists.tapr.org 
> > [mailto:aprssig-bounces at lists.tapr.org] On Behalf Of Robert
> Bruninga
> > Sent: Friday, October 12, 2007 2:58 PM
> > To: 'TAPR APRS Mailing List'
> > Subject: RE: [aprssig] Kenwood KPS-15 switching Power supply

> > in Europe?
> > 
> > Thanks,
> > I tried it on a low currrent bench supply and with the
jumper
> > removed, it started producing 13.8VDC with 160 volts on the
> > input.  I raised it to 240 VDC input and it was still doing
> > fine.  My smallest load was 1 amp on the output, but even
that
> > shut down the supply due to the 100 mA limit of my 240 VDC
> power
> > supply.
> > 
> > But I think you are right.  I even see now that the catalog
> > shows that supply is good for 120 or 240 even though there
is
> no
> > mention of that on the nameplate.
> > 
> > Oh and I load tested it at 120VAC input and at 21 amps it
was
> > down to under 10 volts.  So it does not produce the 23 amps
at
> > 13.8 that the nameplate suggests.
> > 
> > Thanks!
> > 
> > > -----Original Message-----
> > > From: aprssig-bounces at lists.tapr.org 
> > > [mailto:aprssig-bounces at lists.tapr.org] On Behalf Of Keith
> > VE7GDH
> > > Sent: Friday, October 12, 2007 2:44 PM
> > > To: aprssig at lists.tapr.org
> > > Subject: Re: [aprssig] Kenwood KPS-15 switching Power
supply
> 
> > > in Europe?
> > > 
> > > Bob WB4APR wrote...
> > > 
> > > > Does anyone in Europe with 220 mains use the Kenwood
> KPS-15
> > > > switching power supply? It is good for 23 amps at 120
VAC.
> > But
> > > > I see no nameplate indication that it can run from
220-240
> 
> > > and it does
> > > > not have the little voltage switch to select... I see
also
> 
> > > a yellow jumper
> > > > wire near the input caps that would seem to possibly be
> the 
> > > "switch"...
> > > 
> > > I don't have one, but I did a search and found a page at
> > > www.universal-radio.com/CATALOG/hamps/4273.html
> > > that indicates that "this power supply input may be
> converted
> > to
> > > 220 VAC input via an internal jumper cable." You might
want
> to
> > wait
> > > for a confirmation from somewhere else, but at a glance,
it 
> > > sounds like
> > > you have found the jumper.
> > > 
> > > 73 es cul - Keith VE7GDH
> > > --
> > > "I may be lost, but I know exactly where I am!"
> > > 
> > > 
> > > _______________________________________________
> > > aprssig mailing list
> > > aprssig at lists.tapr.org
> > > https://lists.tapr.org/cgi-bin/mailman/listinfo/aprssig
> > > 
> > 
> > 
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> > 
> 
> 
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