[600MRG] On the air

[mstangelo at comcast.net]

Tom,

Don't you have an Elecraft K3? They can operate on 630 meters with the addition of the new synthesizer board and other options:

<https://ftp.elecraft.com/K3S/Mod%20Notes%20Alerts/Operating%20630M%20with%20K3-K3S.pdf>

Have you used it on 630 meters?

Mike N2MS

> On 01/14/2023 5:30 PM Tom W8JI <w8ji at w8ji.com> wrote:
> 
>  
> I was disappointed in my IC7100.
> I now have an IC751A running. Being a 1.8-30 MHz rig the PA is a whole 
> lot lot better on 472kHz.
> 
> I measured off 510 feet of #10, attached an insulator 190ft from one 
> end, and pulled it up with the short section vertical. I now have an 
> Inverted L with ~190 ft vertical and ~310ft horizontal between two 
> towers, using an existing large radial field. It measures 41 j0 at 
> 472kHz and models about 25-30% efficiency.
> 
> I hope the attached file helps someone else. It took me several hours to 
> figure out the IC751A! I almost gave up on it.
> 
> 73 Tom