[Kenwood] Using TS870SAT with Collins 30L-1

[Clif Holland]

The 450 WILL key a 120v amp. The relay is rated 400ma @ 125VAC  or 3A @ 
30VDC. The 870 uses the same relay. The fly in the ointment is the bypass 
caps used on the 870, only rated 50v and will short with the 120v line. The 
570 has the same setup, 50v caps. The 450 doesn't have bypass caps but has a 
cap from Pin 2 to Pin 4 rated at 500v.

In short the 570/870 needs an interface for the 120v amps. The 450 doesn't.

Clif Holland KA5IPF
www.avvid.com




----- Original Message ----- 
From: "Tom Osborne" <w7why at verizon.net>
To: "Kenwood" <kenwood at mailman.qth.net>
Sent: Sunday, June 21, 2009 11:34 AM
Subject: Re: [Kenwood] Using TS870SAT with Collins 30L-1


> Hi Dave
>
> Did the 30L1 use a 110V antenna?  I know my '450 won't key a 110V relay. 
> I
> use a cable to key a 12V relay which keys the relay in my SB200.  I think
> 110 would fry the switching transistor in my '450.  Not sure about the 
> '850
> or '870.  73
> Tom W7WHY
>
>
>
>>I used my 30L1 with a Kenwood 850 for a while. Worked fine...nothing out 
>>of
>> the ordinary to hook it up.
>> ...Dave
>
>
>>> Has anyone ever used a 30L-1 with an TS-870? I need an amplifier cable 
>>> to
>>> get started but
>>> not sure if thats all there is to it
>>>
>>>
>>> thanks
>>> Nick
>
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