[ARC5] Spotting

[Dennis Monticelli]

Tom,

The freq will pull lower when the PA is engaged with the antenna so in
order to spot accurately enough for modern transceiver with CW filter to
hear you, one must spot under full output. On my T-22 the pulling is about
2.5KHz.   If your antenna is tuned for a given impedance, then a dummy load
of the same impedance will pull the freq by the same amount.  If your
transmitter came to you already modified and you don't mind keeping it that
way, a 50 ohm resistor plus switch could be installed internally for
spotting purposes.  The resistor could be under-rated because spotting is
brief.

Dennis AE6C


On Thu, Nov 7, 2013 at 11:39 AM, <tom at telmore.com> wrote:

>
>
> I am new to operating the command sets and have some questions for the
> list. I am building an authentic setup using dynamotors in both receivers
> and transmitters and have the shelving desgin to hold it all just about
> complete thanks to Mike (you know who you are) How did they back in the day
> spot the receive and transmit frequencies to each other? Did they do it
> live on air or was there a way
> to do it without transmitting? I am also looking for a BC348 and ART13 to
> go with my setup and will be in Phoenix, Az. during the week of November
> 19th through the 22nd in case anyone has Command sets they are looking to
> unload.
>
>
>
>
>
>
> Thank You
> Tom ElmoreKA1NVZ
> Anchorage, Ak
> ______________________________________________________________
> ARC5 mailing list
> Home: http://mailman.qth.net/mailman/listinfo/arc5
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:ARC5 at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>