[ICOM] icom 706 MK2

[Adrian]

My earlier post regarded testing voltage at the radio input, however 
this should be at the PA supply, after any fuse points etc under load, 
carrier or 100% modulated ssb..

This is the best place to test. Measuring current at two places in a 
series circuit is of little benefit, as the current must be the same, 
following accepted electrical theory.

Sometimes the covers need to be removed to see the real picture. A volt 
drop found can be traced back towards supply to see the point at which 
it occurs.


73


vk4tux

On 11/4/24 14:04, Facility 406 wrote:
> Voltage and continuity tests were never good to determine any of these 
> problems.  One would need to monitor power supply voltage and current 
> at the connection, then voltage and current at the radio, at the same 
> time, and if an issue appears, monitor voltage and current at each 
> point something changes, power supply, fuse inputs, outputs, and 
> connector. Lots of voltage and current meters...  This is why the 
> problem has been so elusive over the years.
>
> Kurt