[Elecraft] zero-beating a KX1

[Don Wilhelm]

Sorry, but I did not look at your link until after I sent my response.
While that DIP version may work in a K2, I doubt that it can be squeezed 
into a KX1.
73,
Don W3FPR
----------------------------------------------------------------------------------------------
Scott,

 From what source?  The latest was that WA3AAL is also SK.

73,
Don W3FPR

On 6/9/2020 9:38 PM, SCOTT MCDONALD wrote:
> http://www.wb9kzy.com/gzb.htm
>
> This Zerobeat kit looks like it’s still available, might be worth a 
> look.  If anyone does please report back, I’m still banging away on my 
> KX1 as well
>
> Scott ka9p
>
> Make something good happen!
>
>> On Jun 9, 2020, at 4:30 PM, Don Wilhelm <donwilh at embarqmail.com> wrote:
>>
>> Tom Hammond N0SS's (SK) website is mostly intact thanks to the Mid 
>> Missouri Amateur Radio Club.  It is a valuable resource.
>>
>> You can find the files for the K1 and KX1 CW Tuning Indicator (SMD 
>> version) at http://www.mmccs.com/mmarc/n0ss/index_k1.html.
>>
>> If you have capability to etch your own boards, Tom recorded full 
>> size images.  You might also try emailing Fred at FAR Circuits to see 
>> if he can create the boards.  I believe Tom may have used him as his 
>> board supplier.
>>
>> 73,
>> Don W3FPR
>>
>> On 6/8/2020 7:33 PM, Frederick Dwight wrote:
>>> If you do a google search on KX1 zero beat indicator or cw zero beat 
>>> indicator you will see several circuits demonstrated.  Some like the 
>>> one which uses the LM567 (non SMT) part and had
>>> a white LED seemed to be good, much less than 100 Hz BW and had the 
>>> schematic, but some others seemed to be much too broad, perhaps 
>>> hundreds of Hz wide. My circuit
>>> needed quite a bit of audio drive, so rigged up a small 500-500 CT 
>>> audio transformer and used the primary as a autotransformer to 
>>> double the audio voltage
>>> to the circuit which did not change the earphone volume but enabled 
>>> the detector to operate without opening up the audio gain too much 
>>> on any of my rigs.
>>>           Good Luck   Rick  KL7CW
>>> Sent from Mail for Windows 10
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