[TenTec] Herc II power supply question; Corsair I AGC

[n4lq@iglou.com]

Allan:
I have a Herc II here with the matching power supply. The supply has a 
sensor across the output which detects when you kick the power switch of 
your Herc to the on position. As I recall, there is a low "phantom" 
voltage across the output and when a load is detected, current begins to 
flow in the sensor circuit which in turn, activates the supply. Turning 
the Herc's power switch to the off position disconnects the amps dc 
input. Current drain ceases and the power supply shuts down. All of this 
eliminated the need for extra control wires.

I could be all wet about this but if I were you, I would look into this 
matter before connecting a battery across that supply. It sounds like a 
prescription for trouble to me.

As for AGC mods. About all you can do is play around with decay times by 
changing capacitors in the timing circuit. Using an external DSP unit 
with it's own agc system is a big bonus. MFJ makes an affordable unit 
with internal agc. The DSP will not only protect your ears but clean up 
the sidetone.
Steve N4LQ

-----Original Message-----
From: k7gt@attbi.com
To: tentec@contesting.com
Date: Tue, 30 Apr 2002 16:27:28 +0000
Subject: [TenTec] Herc II power supply question; Corsair I AGC

> Greetings Tentec fans!
> 
> I am in the process of a complete relocation and rebuild
> of my station console and associated wiring. That means
> the d.c. wiring will be reworked also. The station
> has a fairly hefty battery backup system (500Ah of
> deep cycle) that I would like to coordinate with
> a FUTURE acquisition of a TT Herc II and associated
> power supply. The question I have is basically this:
> can I hardwire the battery connections in parallel
> with the TT 100 A power supply or will the p.s. need
> to be switched out when I am running on straight battery
> (of course the p.s. will be turned off). If the guts of
> the p.s. can take being across the d.c. bus when turned
> off it will greatly simplify my wiring and control
> switching. 
> 
> The acquisition of a Herc II and p.s. is likely a full
> year away so I have time to work out these kinks...
> 
> The Corsair I that I recently acquired in a trade is
> working out very well. It won't replace the OmniVI but
> it seems to have a very responsive QSK reminiscent of
> my OmniD. A known AF AGC mod was alluded to recently in
> a post regarding the OmniC. Does anyone know where I 
> might find the original reference or some other 
> useful and straightforward mod to the C-I's AGC?
> 
> 73  Allan  K7GT
> 
> --
> Allan  K7GT
> 
> Pleasanton CA
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