K2 on 60m (K60XV)

[Heinz Baertschi]

Based on the fact that the K2 has 5 BPF and LPF only to cover 9 bands I wonder

1) if/to what extent the RX performance on the existing bands is influenced by the addition of the 60m band (K60XV)?

2) what RX performance can be expected on 60m (compared to the K2 standard bands)?

73, Heinz HB9BCB

[Don Wilhelm]

Heinz,

Not true - the bandpass filters are extended when the K60XV option is
added.  Note that there are two trimmer capacitors on the K60XV board
for exactly that purpose.
These additional capacitors are switched in so the bandpass filter can
be peaked on 60 meters.

The cutoff for the 40 meter Low Pass filter is well below the 2nd
harmonic of 60 meters, and can be used on 60 meters without signal
attenuation.

In other words, the K2 on 60 meters has the same RX sensitivity as the
other bands.

73,
Don W3FPR

On 1/18/2017 3:13 PM, Heinz Baertschi wrote:
> Based on the fact that the K2 has 5 BPF and LPF only to cover 9 bands I
> wonder
>
> 1) if/to what extent the RX performance on the existing bands is influenced
> by the addition of the 60m band (K60XV)?
>
> 2) what RX performance can be expected on 60m (compared to the K2 standard
> bands)?
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[Heinz Baertschi]

Don Wilhelm wrote

Heinz,
...
In other words, the K2 on 60 meters has the same RX sensitivity as the
other bands.

73,
Don W3FPR

Hi Don and Leif@LA3ZH,

Thanks for clarification!

The question arised since I had not considered this matter before 01.01.2017 (no allocation in HB9) and now by reading this: http://www.elecraft.com/Apps/k2on60.htm
The technical imperfections explicitly mentioned by this document are no longer explicitly addressed by the actual K60XV manual - so, was not sure if still valid or obsolete.

So there seems to be no reason not to add 60m to my very proven band monitoring station (K2/P3/7.5m active loop).

73, Heinz HB9BCB

[Don Wilhelm]

Heinz,

Note that the date on that application note was before the K60XV was
available.
Also not the first paragraph which states that this is only for
experimental use.
The release of the K60XV took away the need to do any of the
modifications stated in that application note.

73,
Don W3FPR

On 1/19/2017 4:17 AM, Heinz Baertschi wrote:

> Don Wilhelm wrote
>> Heinz,
>> ...
>> In other words, the K2 on 60 meters has the same RX sensitivity as the
>> other bands.
>>
>> 73,
>> Don W3FPR
>
> Hi Don and Leif@LA3ZH,
>
> Thanks for clarification!
>
> The question arised since I had not considered this matter before 01.01.2017
> (no allocation in HB9) and now by reading this:
> http://www.elecraft.com/Apps/k2on60.htm
> The technical imperfections explicitly mentioned by this document are no
> longer explicitly addressed by the actual K60XV manual - so, was not sure if
> still valid or obsolete.
>
> So there seems to be no reason not to add 60m to my very proven band
> monitoring station (K2/P3/7.5m active loop).
>
> 73, Heinz HB9BCB
>
>
>
>
> --
> View this message in context: http://elecraft.365791.n2.nabble.com/K2-on-60m-K60XV-tp7625872p7625879.html
> Sent from the Elecraft mailing list archive at Nabble.com.
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