[1000mp] ARB-704 and Yaesu Mark V

[Tom Childers]

Been running driving an Alpha 87A with a MK-V for four years with no
problems.  I guess I have it hooked up correctly ;o)

N5GE


-----Original Message-----
From: 1000mp-bounces at mailman.qth.net [mailto:1000mp-bounces at mailman.qth.net]
On Behalf Of Pete Smith
Sent: Tuesday, November 28, 2006 12:37
To: All about Yaesu 1000mp
Subject: Re: [1000mp] ARB-704 and Yaesu Mark V


Well, you could always RTFM, but why spoil your fun?  The info on this is on
page 12 of the Mk5 manual, but the short answer is that you can indeed
damage the radio - though perhaps not with the AL-80B.  

73, Pete N4ZR

At 12:41 PM 11/28/2006, you wrote:
>Why you need the ARB-704
>
> 
>
>Amplifiers can damage radios if the amplifier has too much relay 
>control voltage, voltage spikes, or excessive current on the relay 
>control line. Such damage often appears as "stuck" or "sticky" transmit 
>relays in exciters or shorted transistors on transmit control lines. In 
>most cases where the radio is damaged, the system transmits normally 
>but the external amplifier stays locked in a "transmit" mode. This 
>prevents receive signals from coming through the amplifier with normal 
>levels whenever the amplifier is in the "ON" or "OPERATE" position.
>
> 
>
>Above is the reason I have placed the ARB-704 between my Yaesu Mark V 
>and my AL-80B.  However I was told that the Yaesu Mark V will not allow 
>this type of damage to occur and my having the buffer between the rig 
>and the amp is overkill.  What is the real true?
>
> 
>
> 
>
> 
>
> 
>
>
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