[TenTec] Hooking up an Amplifier for the first time...

[CATFISHTWO at aol.com]

Again I use an mfj 704 amp interface with all my rigs and amps.  I  that way 
never have to think about it, it is always protected..   this  stuff is too 
expensive not to use a little protection.
 
tom N6AJR
 
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In a message dated 3/26/2006 3:08:31 P.M. Pacific Standard Time,  
prosolar at sssnet.com writes:

the  relay is rated at 250 volts at 1000ma or 2000 ma at 125 volts
the relay is  used for negative line keying

the mosfet will only handle positive key  lines, but will do so at 6 
amps and 250 volts.

the newer mosfets I  am using will do 10 amps at 250 volts.

btw... ten tec makes the cases  for me and they are painted the same 
color as the Jupiter, so it is as  perfect match to the jupiter as you 
can get


Mike,  WB8VGE
SunLight Energy Systems
The Heathkit  Shop

http://www.seslogic.com
http://www.theheathkitshop.com/

On  Mar 26, 2006, at 3:25 PM, Ken Brown wrote:

> Hi  Mike,
>
> That looks like a nice product. I have a couple of  questions. The
> specifications list says the relay contacts are good  for 2000 mA at 125
> volts. Many older amplifiers have around -150 to  -180 VDC that needs to
> be grounded to key them. Later in the text it  says you can key the
> Heathkit's -130 Volts. Is this unit using a 125  volt rated relay to do
> that? What about the MOSFET output rated at 250  volts? Can that output
> be used to pull a negative DC voltage to  ground? Or will that only work
> with positive voltages?
>
>  Thanks,
>
> Ken N6KB
>
>
> Mike Bryce  wrote:
>> dave...
>>
>> check out my ampkeyer,  here's the link:
>>
>>  http://www.theheathkitshop.com/ampkeyer.html
>>
>> notice at  the bottom of the page, there's a photo with the ampkeyer 
>>  and
>> the jupiter.
>>
>> the ampkeyer is simple to  use, and so simple to hook up even a caveman
>> can do  it.
>>
>> mike
>>
>> Mike,  WB8VGE
>> SunLight Energy Systems
>> The Heathkit  Shop
>>