HW-101 Balanced Modulator Diodes

[Stu Lyon]

Yes.  Not in a HW-101 but in several SB-401s and a SB-101. You should also
replace the 200 balance pot with a multi-turn trimpot and the "end"
resistors with modern resistors. Doing all this will give at least a -40 db
carrier null.  The diodes I used were matched quads p/n hp5082-2805. which I
bought from a subscriber of this reflector. (Don't remember his name.)

73, Stu W6CUX
Winnetka, CA
slyon at pacificnet.net


----- Original Message -----
From: "Richard H. Arland" <rarland at EARTHLINK.NET>
To: <HEATH at LISTSERV.TEMPE.GOV>
Sent: Tuesday, May 21, 2002 2:13 PM
Subject: HW-101 Balanced Modulator Diodes


> Has anyone ever tried substituting Schottkey diodes for the 1N191 diodes
> in the balanced modulator for the HW-101?
>
> Currently I am rebuilding one and figured that now might be the time to
> replace the diodes rather than after I reassembled the entire unit. I
> plan on pulling the diodes and checking them out-of-circuit and replace
> the entire diode ring should one be bad.
>
> 73 Rich K7SZ
>

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