[Elecraft] Re: KX1: ATU and misc

[Andrea Borgia]

wayne burdick wrote:


> Just tune up into a dummy load on any band you want to "reset."

Ok, I'll try that asap, but I'm still curious as to why there's no relay 
activity on 30m when forcing a tune operation: the antenna is not tuned 
to 30m natively, only on 20m, but on 20m the atu clicks and on 30m it 
doesn't. Well, I'll get back to you when I have tried the dummy load 
("no, I should build one" is the answer to the question you were 
thinking to ask ;-)


> In general I recommend operating the KX1 at 4 W and lower. The extra dB 
> or two you get by exceeding this is usually not worth the risk.

Sorry, I wasn't being clear: I was talking about the power-supply mods, 
such as cutting a trace to use the jack's builtin switch. The scenario I 
had in mind is a melt-down caused by a short-circuit, not extended 
operation  at high power levels.


> internal battery is about 2 watts. If you really wanted to fuse it, you 
> could use a very small self-resetting polyfuse -- see www.digikey.com 
> for possible types to use. The main problem in the KX1 is space, so 
> you'll need a *really* small fuse.

Yep, that's the same issue I thought of. Thanks for the infos and for 
the pointer, I'll look into it.


B73,
Andrea.

-- 
Homepage: http://andrea.borgia.bo.it     /    Amateur radio: IZ4FHT