[AMPS] L4B Soft-Start SS-400

[Will K6NDV]

Isn't the reason to install the SS-400 to save the ON/OFF switch in the L4B?
I have heard some failure stories and also that the switch in not available
any more.

Thanks Will,  K6NDV

-----Original Message-----
From: km1h@juno.com <km1h@juno.com>
To: amps@contesting.com <amps@contesting.com>
Date: Tuesday, February 09, 1999 11:01 PM
Subject: Re: [AMPS] L4B Soft-Start SS-400


>
>
>
>On Tue, 09 Feb 1999 21:42:01 -0500 David Humbertson
><daveh@hereintown.net> writes:
>>
>>Hi All,
>>I recently installed the Harbach SS-400 soft-start module
>>in my L4B and would be interested in hearing from others
>>who have done the same. Looks like my tubes may not be
>>fully cutoff as I am seeing a bit of plate current and a small
>>amount of neg grid current in standby - works fine otherwise.
>>My 120 volt line reads 100.3 in SSB with the module in and
>>125 with it out. No one else that I know of has experienced
>>this.
>
>Sounds like a defective module Dave.  Besides, why bother using one
>anyway? The L4B PS has sufficient inrush lag as designed, plate and
>filament. If you are using an external heavier duty replacement xfmr then
>switching to 1N5408 diodes in the HV will more than enough handle any
>inrush. Costs less than a failure prone add-on.
>
>73  Carl  KM1H
>
>.
>
>
>>--
>>73, Dave - W3NP
>>Ft. Ashby, WV
>>
>>
>>
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>>
>
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