With -120 volts applied to the Eagle keying line there will be nothing left to
repair…
Gary
W0DVN
> On Feb 25, 2020, at 4:47 PM, Rodney Dewald via TenTec <tentec@contesting.com>
> wrote:
>
> I have used a 12vdc relay and use the contacts to switch the 120v
>
> Sent from Mail for Windows 10
>
> From: Rick@dj0ip.de
> Sent: Tuesday, February 25, 2020 5:41 PM
> To: 'Discussion of Ten-Tec Equipment'
> Subject: Re: [TenTec] Eagle & Heath SB-200 Amp
>
> Actually there are various kits for installing inside of the SB-200 that
> present a 12v keying circuit.
> That's why I said he needs to tell us exactly how the amp has been modified,
> with circuit drawing.
>
> I don't recall all of the names and sources; one was called a soft key, and
> used solid state keying that could handle the 120 volts, yet presents 12v to
> the transceiver.
>
> That's why I also said STOP, DON'T DO ANYTHING . . . until we find out.
> Otherwise there will be an expensive repair to the Eagle.
>
> 73,
> Rick, DJ0IP
> (Nr. Frankfurt, Germany)
> May the Sunspots be with us!
>
> -----Original Message-----
> From: TenTec <tentec-bounces+rick=dj0ip.de@contesting.com> On Behalf Of Bob
> McGraw K4TAX
> Sent: 25 February 2020 17:40
> To: tentec@contesting.com
> Subject: Re: [TenTec] Eagle & Heath SB-200 Amp
>
> WOAH! STOP! If the amp has not been modified for the KEY circuit, it
> has 120 volts on the center pin of the RCA connector. If this is connected
> to the Eagle it will immediately destroy the Eagle PTT Amp control circuit.
>
> The amp relay must be changed to a 12 volt relay and other circuit
> modifications done, OR you must use an Amp Interface between the radio and
> the amp.
>
> Who ever gave you the information DOES NOT know what they are talking about.
> This is normal for most hams unless they have actually interfaced the SB-200
> to the Eagle. MFJ did make an interface suitable for the application.
>
> As Will Rogers said: "it's not what people know that concerns me, it is what
> they know that is not correct that gives me concerns".
>
> If you need additional information, I'll be glad to assist.
>
> 73
>
> Bob, K4TAX
>
>
> On 2/25/2020 8:13 AM, Richard Wagner via TenTec wrote:
>> I’ve never dealt with an Amplifier before. A friend gave me a Heath SB-200.
>> It appears I have to make a connection between the AMP KEY terminal of the
>> ACC-1 accessory connector and the AMP KEY Socket of the amp. A plug for the
>> socket and short jumper wire were included with my Eagle. This appears to be
>> all that is needed. I’ll connect from the Eagle to the Amp then through my
>> Antenna Tuner to the Antenna. Does this seem OK?
>>
>> Rich Wagner
>> K4MZE
>> _______________________________________________
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>> http://lists.contesting.com/mailman/listinfo/tentec
>
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