[K3] Receiver overload point?

[g0afh]

Hi

What is the largest signal that I can reasonably expect the K3 to handle
before overload?

I am using my K3 with an external transverter for 2m and have a very
large in band signal to deal with.

If it makes any difference, I am transverting from 14MHz.

73
Ian.
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[riese-k3djc]

I generally dont chime in on issues but I believe the bigger problem may
be how
well your converter handles the strong signal
unless someone is tx a bad signal ( distortation ) I have never had "
overload ' issues on 75 meter
the DEM stuff is pretty good,, not sure what else is outthere

Bob K3DJC





On Wed, 13 Jun 2012 21:42:58 +0100 G0AFH <[hidden email]> writes:

> Hi
>
> What is the largest signal that I can reasonably expect the K3 to
> handle
> before overload?
>
> I am using my K3 with an external transverter for 2m and have a very
>
> large in band signal to deal with.
>
> If it makes any difference, I am transverting from 14MHz.
>
> 73
> Ian.
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>

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[g0afh]

Hi Bob

thanks.

The receive converter has an input 1dB compression point of about -5dBm,
and a conversion gain of around 22dB. So before it overloads it will be
delivering +17dBm to the K3, which is a seriously big signal.

I already run with the K3 attenuator in, next move is to add attenuation
between the transverter and K3 so that I only hear a slight increase in
noise when the transverter is switched on.

At this stage, it would be useful to know when the K3 overloads. At
least I will then know where the limitations of my system are.

73
Ian

On 14/06/2012 00:21, [hidden email] wrote:

> I generally dont chime in on issues but I believe the bigger problem may
> be how
> well your converter handles the strong signal
> unless someone is tx a bad signal ( distortation ) I have never had "
> overload ' issues on 75 meter
> the DEM stuff is pretty good,, not sure what else is outthere
>
> Bob K3DJC
>
>
>
>
>
> On Wed, 13 Jun 2012 21:42:58 +0100 G0AFH<[hidden email]>  writes:
>> Hi
>>
>> What is the largest signal that I can reasonably expect the K3 to
>> handle
>> before overload?
>>
>> I am using my K3 with an external transverter for 2m and have a very
>>
>> large in band signal to deal with.
>>
>> If it makes any difference, I am transverting from 14MHz.
>>
>> 73
>> Ian.
>> ______________________________________________________________
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:[hidden email]
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>>

______________________________________________________________
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