[Elecraft] [K1] Building a 60m band module for the K1

[DM5TU - sTef]

Don,

thanks a lot for your helpful advise.

So the smartest way to begin would be to order a KFL1-2 with the 30/40m option. Or should I go for 80/40?
I have the 4 band module built in now with 40/30/20/15.

The crystal will be custom ordered at www.krystaly.cz  Email: krystaly at krystaly.cz   KRYSTALY Hradec Kralove,a.s Ceska Republika.
They make perfect quality for a very good pricing.

Taking in account that my K1 VFO is 80 KHz wide and the allowed spectrum for 60m in DL  is 15KHz ( 5.351.5 - 5.366.5 MHz in DL) I could split the left over 65 KHz into 2 parts and add these to the lowest and the highest frequency.

5.351.5 - 32,5 KHZ = 5.319 KHz  -> This would be the lowest QRG. Adding 8 MHz on top we end up with 13.319 MHz.

Do you think these specs here are fine for ordering the rock?

Frequency:         13.319 MHz
Package:            HC-49, series resonance
Adjustment:        +/-5 ppm
Stability:             +/-10 ppm over OTR (-20/+70C)

Well I just ordered some 13.300 MHz crystals for my NorCal SIERRA which I moved to that band. So I can use these ones too.


Don, please let me know your thoughts?
What about the firmware of the K1 , band recognition etc?


72/73 de 
sTef

DM5TU / VY1QRP
DL-QRP-AG *GM*
GQRP #8769


So if I am looking at a crystal with (
Am 28.04.2017 um 13:56 schrieb Don Wilhelm <donwilh at embarqmail.com>:

Stef,

I have not done it, but I can explain how to do it.
Start with a crystal that is 8MHz above the lowest frequency you wish to tune.
Then tune the premixer bandpass filter to 3100kHz lower than your crystal frequency - I would start with the capacitor values from the RF bandpass filter for 30 meters.

You may have to experiment with the capacitors for the 60 meter RF Bandpass Filter.  If you have the 40 meter bandpass filter capacitors, you can add padder capacitors to them to bring the frequency down, or use filter design software to figure out what the capacitors should be.

73,
Don W3FPR

On 4/28/2017 7:33 AM, DM5TU / VY1QRP - sTef wrote:
> Dear Gang,
> did anybody of you ever managed to bring the K1 succesfully to 60m?
> As the band (15KHz from 5.351.5 - 5.366.5 MHz) is now legal in Germany I am
> in the need of a 60m rig.
> So please let your thoughts roll out to the group.
> Thanks for your help.
> 72/73 de
> sTef
> DM5TU / VY1QRP
> DL-QRP-AG *GM*
> GQRP #8769
> --
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