Please pardon the time warp - I guess that last one has been sitting in
my "Unsent Messages" folder for a while.
-Larry/NE1S
Larry Szendrei wrote:
John,
I've run the Ranger PA of the LV B+, as indicated in a previous post,
with no overstressing of the supply. Then again, the power supply in my
Ranger is non-original - different XFMR, and solid-state rectifiers in
the "economy" hookup for low and high B+. The rig was a bsket case when
I got it, and I've never laid eyes on the original power xfmr. That
said, the xfmr in there appears no beefier than the original, perhaps
less so.
I know for a fact Timtron (WA1HLR) also has had experience running the
Ranger PA off the LV B+, and he advocates this method to anyone wishing
to drive an amplifier with the Ranger.
One thing - The PA plate current meter won't read when doing this -
unless you change the wiring in the radio, as I did, so that it reads
when either the HV B+ and LV B+ supplies are employed. Alternatively,
you can add an external meter without taking the Ranger out of the
cabinet (in series with the appropriate pins on the accessory plug).
73/GL,
-Larry/NE1S
John Lawson wrote:
On Wed, 16 Nov 2005, John Coleman ARS WA5BXO wrote:
I don't know if the power supply come from the same XFMR or not but what
does "10 on the knob" mean?
In the Ranger, the LV feed to it's rectifier is from two equidistant
taps between CT and the 'ends' of the HV secondary, the which ends
feed the HV rectifier. I'm a bit worried that if I run the whole
radio on the LV winding, it will stress it. If anyone has any concrete
"real-world" actual experience with doing this, I'd love to hear how
it worked out.
Guitar (and other musical) amplifiers traditionally have their volume
knobs marked 0 - 10, thus '10' is 'loudest'. From whence derives the
joke
in Spinal Tap - "This amp was custom made for me - see? the knobs all go
to *11*!!!"
Cheers
John KB6SCO
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