[ARC5] 1ST QSO with my BC-454-B and T-19
Bill Cromwell
wrcromwell at gmail.com
Mon Dec 31 12:34:04 EST 2012
On Mon, 2012-12-31 at 09:30 -0500, Mark K3MSB wrote:
> Hi Mike --
>
> Take a look at the PS. It's composed of the commercial 28V 15A supply atop
> the main chassis, and the big HB chassis for B+, screen, and OSC voltages.
>
> On the very right of the HB chassis are 3 jacks, ANT, TX and RX; the ANT
> is the top jack which feeds the 200pf capacitor. The jacks go to an
> internal 28V DPST relay. The relay is activated by the toggle switch on
> the front panel.
>
> The DPST relay controls the 200V OSC voltage as well as antenna switching.
> I wasn't too sure how this was going to work (RF so close to the OSC), but
> it seems to work OK.
>
> I have a T-22 and a BC-455-B sitting on the shelf which I plan on starting
> in January.
>
> Ultimately, I plan to house the antenna switching relay in a separate box
> with a switch for 80/40 meters that will select the 2 series capacitors,
> and also house the 4:1 UNUN.
>
> 73 Mark K3MSB
Hi Mark...
...Everybody,
It's encouraging to see this kind of project and a couple of the
"gotchas" that some have pointed out. I am taking notes. I have a
project going here at a more relaxed pace that will end up with four of
the receivers on a homebrew rack of some kind to give me coverage of the
the new 600 meter band down through 40 meters. For 160 coverage I will
just use one of the BC-453s or R-23 and a xtal converter to get 160
meters into it. The homebrew control box I am planning will do the T-R
function and the "bandswitch" will select which receiver and it's
homebrew transmitter gets B+. Mark's project is demonstrating some of
that same approach that I am planning to use.
I have the receivers here already and a couple of them are completed
(grin). The 80 meter receiver only needs the heater string rewired back
to original. The 40 meter radio and one R-23 are already plug-n-play.
Another R-23 and two 453s waiting for TLC. One of my inventories showed
me a set of four dressed in black. Two of the six are bare aluminum.
Happy New Year to everybody.
73,
Bill KU8H
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