[ICOM] ic7300 ATU

WD8ARZ wd8arz at comcast.net
Sun Sep 24 18:05:00 EDT 2017


Internal tuners generally have to have smaller capacitors and inductors 
due to space limitations. That limits the frequency range and power it 
can handle. Keep in mind that tuner power ratings are based on a one to 
one swr conditions. Higher swr transmissions would require a higher 
power rating tuner or you might arc one of the components .... once 
arched, that location will re-arc at lower power settings in the future 
in a lot of cases. 73 from Bill

On 9/24/2017 5:54 PM, Alan wrote:
> I have a new IC7300 and when using the antenna tuner I do not seem
> to be able to get my SWR to lower than 1.8 to 1 and need to use an 
> external tuner
> to get it to 1 to 1, is this normal?? I used to have an IC761 and auto 
> atu on that would
> tune any wire on any band to 1 to 1, so was expecting the same
>
> Alan ZL3KR


More information about the Icom mailing list