[TenTec] Pegasus DC Input Issue

[d.e.warnick at comcast.net]

If you're making th e power connections to the same place on the Pegasus (I assume you are), then you need to get the ol' voltmeter out & see where you do & do not have 12 volts. I'd start at the spot you make the connection & trace toward the switch if that spot is OK. Yep, it does sound weird. 

Dave 

WA3F 



----- Original Message -----


From: "John Huffman" <hjohnc at gmail.com> 
To: rmcgraw at blomand.net, "Discussion of Ten-Tec Equipment" <tentec at contesting.com> 
Sent: Saturday, April 28, 2012 9:19:01 AM 
Subject: Re: [TenTec] Pegasus DC Input Issue 

Bob - 

The Pegasus does not switch the power supply.  The power supply is on at 
all times.  The ON/OFF switch on the front of the Pegasus is a two wire 
connector labeled "1" that goes to the DC input board that holds the relay. 

I tried the Pegasus with two different power supplies, one switcher and 
one linear.  It does not work on them, but does work off a battery.  I'm 
confused. 

Thanks for the suggestion. 

73 de K1ESE 
John 

On 4/28/2012 8:55 AM, Robert Mcgraw wrote: 
> By chance is the AC supply switched by the power switch on the Pegasus? 
> If so there 4 wires on the power cable, 2 for DC and 2 for the AC 
> switching line.  If the switch in the radio that controls the AC line is 
> defective then the power supply will not turn on, therefore the radio 
> will not turn on.  Clue is that it works on the 12V battery says the 
> relay and circuit in the radio is OK. 
> 
> 73 
> Bob, K4TAX 
> 
>> Through various misadventures, the DC input relay on my Pegasus will not 
>> engage when power is applied, mostly. 
>> 
>> I suspect the two transistors or the one diode near the relay coil. 
>> Perhaps this symptom would give one of you a clue to the component(s) I 
>> should replace. 
>> 
>> The DC input relay will not trip and power up the Pegasus using a 
>> regular station 12v power supply.  It will trip and power the Pegasus if 
>> I use a battery for the 12v.  I am guessing a grounding issue here, 
>> somehow. 
>> 
>> Any suggestions greatly appreciated. 
>> 
>> 73 de K1ESE 
>> John 
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