Ameritron ARB-704, Flex 6500 and Ameritron AL-80B Amplifier

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  • Updated 3 years ago
Hi Guys,

I need help hooking up my Ameritron ARB-704 to my Flex 6500 and my Ameritron Al-80b Amplifier.

Thanks

Tim Hill - KI6LSB
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Tim Hill - KI6LSB

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Posted 3 years ago

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Larry - W8LLL

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RCA cable from TX1, TX2 or TX3 on back of flex 6500 to the  radio jack on ARB-704 then another rca cable from the AMP jack on the arb-704 to the RLY jack on the back of the AL-80b. Then in radio setup transmit tab make sure you enable the correct TX relay.






(Edited)
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Tim - W4TME, Customer Experience Manager

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A most excellent post!
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Tim Hill - KI6LSB

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This is the way all the post should be, made it easy for me to understand, I am new and have only had the Radio for one week and I am still trying to understand how everything works.

Tim Hill - KI6LSB 
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Bill -VA3WTB

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Nice Larry, even I could follow that..lol
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Bob K4RLC

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Thanks. I've been waiting to connect the ALS-600 and ARB-700. Now I'll go ahead.

73 de K4RLC Bob

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Lee, Elmer

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I'm not sure why you need a arb 704 for either the al 80b or the als 600. The relay is 12v 100ma back current protected
(Edited)
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James - K4JK

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Does the relay in the AL-80b require a delay to be set? The lower-end Ameritrons do because the relays are slow.
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Larry - W8LLL

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I do not use any delay with my AL-80b.
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James - K4JK

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I was curious so I I had a look at the AL-80b manual. The manual states that the internal relay takes 15ms to switch states, which is the same time that the relay in the 811/811H, etc. take. I run my 3-bottle 811 with 25ms delay for this reason.

Chances are if you're not using TX delay with an AL-80b you're hot switching the relay. To be safe I'd use at least 20ms TX delay.
(Edited)
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Larry - W8LLL

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I added delay, thanks.
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Bill / VA3QB

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Larry  W8LLL

Do you or would you even consider using the ALC from the Flex 6xxx through the ARB to the Amp?

Bill
VA3QB
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Larry - W8LLL

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I have not tried the flex alc, I use ddutil3 and it works well for my needs.