[Milsurplus] [ARC5] 1625 and Key Clicks.

[Dennis Monticelli]

I used an LC key click filter back in my novice days. It works, but the
problem with it in this case is the size of the L.  You have to pass the DC
cathode currents with saturation or excess voltage drop and you will need
several henrys for the time constant.  Essentially it's a power supply
filter choke and so would need to be mounted externally.  If that's OK then
it's an effective solution.

Dennis AE6C

On Tue, Jul 11, 2017 at 12:26 PM, <w8au at sssnet.com> wrote:

> At 12:26 PM 7/11/2017, arc5 at ix.netcom.com wrote:
>
> Has anyone here figured the correct R and C for a Key Click Filter at the
>> keyed cathode of 1625s?
>>
>
> If you're keying just the 1625 amp, then use series L for the "make" and
> some C for the break.
> This won't work for the oscillator as it would add chirp.
>
> Been years since I used to do that empirically with L & C values I had on
> hand, but
> check the older ARRL handbooks for the info they have on this subject.
>
> Perry   w8au
>
>
>
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