[ARC5] 1ST QSO with my BC-454-B and T-19
Mike Hanz
aaf-radio-1 at aafradio.org
Mon Dec 31 09:54:43 EST 2012
Very nice, Mark - a clean implementation, to be sure. But I'm still a
little fuzzy on how your matching mystery was solved. Was it cured by
providing a solid ground, or did magic just happen when you added the
jacks and relay?
Or shouldn't I ask...heh, heh... :-)
Happy New Year,
- Mike
On 12/31/2012 9:30 AM, 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
>
>
> On Mon, Dec 31, 2012 at 8:14 AM, Mike Hanz <aaf-radio-1 at aafradio.org> wrote:
>> ----- Original Message ----- From: "Mark K3MSB" <mark.k3msb at gmail.com>
>>
>>>> It works!!!!
>>>> http://www.k3msb.com/arc5/**K3MSB_BC454B_T19.jpg<http://www.k3msb.com/arc5/K3MSB_BC454B_T19.jpg>
>>> On 12/31/2012 8:01 AM, David Stinson wrote:
>>> A thing of beauty, indeed ;-)
>> Agreed! How'd you solve the antenna matching problem, Mark?
>>
>> - KC4TOS
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