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Re: [linrad] IC706MKIIG

Hi Leif

The 706 series is very picky about low power supply voltage.
I had to run #4 welding wire from my battery so I could run mobil
with the engine off. Somewhere near +12 volts and the frequency
becomes unstable. If your power source spikes momentarily below
12 volts, it is very likely to cause a problem. This may or may not
relate to your problem, but is something to check. Some shortcuts
were taken in the 706 design, especially the noise blanker.

73, Jim Shaffer, WB9UWA.

On 8 Dec 2003 at 10:47, Leif Åsbrink wrote:

> Hi All,
> I am doing some measurements on a IC706MKIIG, but I do not have
> the operators manual. The unit is fine on 144 MHz, but on 14 MHz
> the ALC turns down the power after it initially has been a bit above
> the steady state level soon after key-down. 
> The AGC action is fast and causes terrible keying clicks. Is there
> anyone in this group who knows if I am operating the unit improperly?
> In other words: Is there a drive level I should set some way according
> to the operators manual or is the unit defective because some internal
> level is incorrectly set? I find it hard to believe that these keying
> clicks are normal for the IC706MKIIG - on 144 MHz the keying is
> superb.
> 73
> Leif / SM5BSZ