[Elecraft] Upgrading K3

[Fred Jensen]

OK Don, I'll bite:  What does a "220uF Solid Polymer Electrolytic 
Capacitor on the output of the 8 volt regulator" have to do with an 
"extension of the K3 tuning range to 100 KHz?"  Voltage regulators are 
usually found at the far end of the circuit from frequency determining 
components.  Enquiring minds would like to know. [:-)

73,

Fred ("Skip") K6DGW
Sparks NV USA
Washoe County DM09dn

On 6/23/2017 3:21 PM, Don Wilhelm wrote:
> Mike,
>
> The KRX3A includes the 220uF Solid Polymer Electrolytic Capacitor on 
> the output of the 8 volt regulator.
> As far as I know, there is no other difference.  This capacitor allows 
> extension of the K3 tuning range (with the modified KBPF3 option) to 
> 100kHz.  See 
> http://www.elecraft.com/manual/E740264%20KBPF3%20Modification%20Kit%20Instructions%20Rev%20A2.pdf
> If you have a KRX3 and KBPF3 to modify.
>
> 73,
> Don W3FPR