[Heath] SB-110A

[Dave Edwards]

That's right....been so long I've had one of those in front of me.
I do remember it had to be flipped when operating the monobander SSB 
rigs vs. the Sugar Baker and Hot Water rigs...
....Dave


On 4/23/2013 3:10 PM, Glen Zook wrote:
> None of the HP-23- series of power supplies has a switch for "bias"! 
>  The HP-23 and HP-23A have fixed bias and a variable bias.  The 
> HP-23B, HP-23C, and the PS-23 have only fixed bias.  The HP-23A and 
> HP-23B have a toggle switch to switch between 250 VDC and 300 VDC. 
>  The HP-23, HP-23C, and PS-23 require an internal connection to 
> determine if the lower B+ is 250 VDC or 300 VDC.
> Glen, K9STH
>
> Website: http://k9sth.com
> ------------------------------------------------------------------------
> *From:* Dave Edwards <kd2e at comcast.net>
> *To:* heath at puck.nether.net
> *Sent:* Tuesday, April 23, 2013 10:18 AM
> *Subject:* Re: [Heath] SB-110A
>
> Some of the old Heathkit HP23's had a toggle switch on it to switch 
> bias voltage. ...Not sure if it was the 23 or 23A.
> Newer ones did not, and had to be hard wired.
> Just make sure you have the right setting for your rig.

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