[ARC5] Input impedance - BC-453-B - un-un

[AKLDGUY .]

Even that's not quite correct, Mike.
Only the transmitter that has been *selected* is connected to its
antenna terminal by the internal relay contacts, which are closed
(just like that transmitter's 1625 cathode relay contacts) even while
receiving.
This selected transmitter's output is not connected to the antenna
until the remotely mounted antenna relay changes over.

The so-called 'antenna relay' in the transmitter front panel only
prepares the path.
When the selected transmitter is transmitting, all the commoned
antenna terminals are live with RF.

73 de Neil ZL1ANM


On Fri, Feb 6, 2015 at 1:02 PM, Mike Feher <n4fs at eozinc.com> wrote:

> Not exactly correct. Antenna terminals on multiple transmitters are indeed
> connected together. However, only the transmitter actually transmitting is
> really connected to the antenna through a relay. - 73 - Mike
>
> Mike B. Feher, N4FS
> 89 Arnold Blvd.
> Howell, NJ, 07731
> 732-886-5960
>
>
> -----Original Message-----
> From: ARC5 [mailto:arc5-bounces at mailman.qth.net] On Behalf Of Kenneth G.
> Gordon
> Sent: Thursday, February 05, 2015 4:55 PM
> To: ARC-5 List
> Subject: Re: [ARC5] Input impedance - BC-453-B - un-un
>
> On 6 Feb 2015 at 8:42, AKLDGUY . wrote:
>
> > Correct me if I'm wrong, but when multiple receivers are fitted,
> > aren't all the antenna terminals connected together with short wires?
> > So effectively all receiver inputs are in parallel?
>
> Correct.
>
> The same thing is true for the transmitters...
>
> Ken W7EKB
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