[Amps] Vacuum relays in Dentron MLA-2500

[R.Measures]

>This link shows the QSK conversion of my solid state ICOM IC2KL HF amp.
>It includes some pictures of the relay bracket and suspension.
>The execution is done in accordance to the recommendations of Rich Measures.
>Since no 110 VDC was available I have modified the hot shot circuit a bit.
>
**  The requsite 100 - 160 VDC to operate the high-speed switching 
speedup  circuit may be obtained via a halfwave rectifier/C-filter from 
either one of the L wires in a 240V circuit, or from the L wire in a 120V 
circuit.   The resultant current of c. 85mA in the N wire may be of 
concern to Dudley Doright types, but #12 Cu seems to be able to carry 
this current with no ill effects.  (see Figure 7 on Web site)

>http://www.qsl.net/pa3duv/2klmain.html
>
>The amp is uded for my Winlink pactor PMBO and is 24 H 7 days per week 
>opertional.
>So far the QSK relays have performed in 37887 pactor links. No signs of 
>wear yet.
>
>Regards, Dick PA3DUV
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