Subreceiver Installation Suggestions

[Elecraft mailing list]

I recently purchased the subreceiver for the K3S.  Before I install it, it there anything I should know or think about?  I think there is a choice of antennas. Is there anything else I should do now that would be harder to do after the installation?

Lee, KV5M
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[Grant Youngman-2]

Unless you have a specific application, I’d just use the default antenna routing configuration.

And be careful when you drop it in. I’ve had my sub-receiver box in and out quite a few times over the years for one reason or another.  Not long ago I discovered it wasn’t working (?).  Dead as a doorknob.  Discovered that when I put it in the connector block on the side nearest the front of the radio I had pinched a coax cable, and pulled it out of its socket.  Never saw it … dumb as a brick ;-)

It’s also not a bad idea (not sure if it’s in the instructions or not) to remove the left side panel (looking at the radio from the front) so you can see the rear connector.  It makes it a bit easier to see the pins and get them properly lined up and seated.

Grant NQ5T
K3 #2091, KX3 #8342

> On Jul 5, 2018, at 12:21 PM, Lee Murrah via Elecraft <[hidden email]> wrote:
>
> I recently purchased the subreceiver for the K3S.  Before I install it, it there anything I should know or think about?  I think there is a choice of antennas. Is there anything else I should do now that would be harder to do after the installation?
>

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[Jim Miller]

Take a run at what u want in main and sub for filters as the sub will need to be removed for any changes afterwards.

73
Jim ab3cv

On Jul 5, 2018, at 12:56 PM, Grant Youngman <[hidden email]> wrote:

Unless you have a specific application, I’d just use the default antenna routing configuration.

And be careful when you drop it in. I’ve had my sub-receiver box in and out quite a few times over the years for one reason or another.  Not long ago I discovered it wasn’t working (?).  Dead as a doorknob.  Discovered that when I put it in the connector block on the side nearest the front of the radio I had pinched a coax cable, and pulled it out of its socket.  Never saw it … dumb as a brick ;-)

It’s also not a bad idea (not sure if it’s in the instructions or not) to remove the left side panel (looking at the radio from the front) so you can see the rear connector.  It makes it a bit easier to see the pins and get them properly lined up and seated.

Grant NQ5T
K3 #2091, KX3 #8342

> On Jul 5, 2018, at 12:21 PM, Lee Murrah via Elecraft <[hidden email]> wrote:
>
> I recently purchased the subreceiver for the K3S.  Before I install it, it there anything I should know or think about?  I think there is a choice of antennas. Is there anything else I should do now that would be harder to do after the installation?
>

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[Don Wilhelm]

Lee,

As was mentioned, think about the roofing filters in the main and sub
receivers.  If you wish to change the filters later, you must remove the
subRX (which is not as difficult as some would make it).

As far as the AUX antenna, I would recommend that you install the BNC
jack the the AUX antenna.  If you want to later change it to operate
with the SUB AUX input using the non-transmit antenna, that is easy to
accomplish (just keep the TNC cable).

Unless you select the AUX antenna for the SubRX, it will use the same
antenna as the main RX through the 3dB splitter - so no confusion until
you select the AUX antenna.

73,
Don W3FPR

On 7/5/2018 12:21 PM, Lee Murrah via Elecraft wrote:
> I recently purchased the subreceiver for the K3S.  Before I install it, it there anything I should know or think about?  I think there is a choice of antennas. Is there anything else I should do now that would be harder to do after the installation?
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