[Elecraft] Tuning Random-Length Wire Antenna with K3 Internal Tuner??

[Walter Underwood]

Tuning happens at low power, so transients are small. After it is matched, why would the K3 ATU not be rated for full power over the full SWR range?

Other components might fail, of course. Amphenol UHF connectors are only rated for 500 V.

wunder
K6WRU
Walter Underwood
CM87wj
http://observer.wunderwood.org/ (my blog)

> On Dec 12, 2020, at 5:04 PM, Mister Mike <w1rc at near-fest.com> wrote:
> 
> That is pretty much what I thought.  I will have to read the fine manual and see how the automatic tuner works.  Picked up this K3 in a swap deal a while back but I am still pretty much stuck ( happily) in the Collins KWM-2/S-Line “Stone Age” so I need time and patience (lots) to figure how to use these marvelous appliance radios. 
> 
> In any event I have a MAC-200 made by SGC who make pretty darn good tuners which I can use but that is another box to take along if I do a road trop.
> 
> 73 to all....
> 
> Michael, W1RC
> 
>> On Dec 12, 2020, at 6:37 PM, donovanf at erols.com wrote:
> 
>> Hi Mike,
>> 
>> Its not wise to use the K3 antenna tuner to tune a random wire.
>> A truly random wire can easily produce VSWR greater than 10:1
>> which is likely to damage the K3 tuner when running at full
>> K3 output power.
>> 
>> Its much wiser to use an external tuner with a random wire
>> 
>> 73
>> Frank
>> W3LPL
>> 
>> 
>> 
>> -----Original Message-----
>> From: elecraft-bounces at mailman.qth.net <elecraft-bounces at mailman.qth.net> On Behalf Of Mister Mike
>> Sent: Saturday, December 12, 2020 9:42 AM
>> To: elecraft at mailman.qth.net
>> Subject: [Elecraft] Tuning Random-Length Wire Antenna with K3 Internal Tuner??
>> 
>> What is the best way to do this?  I am not familiar with automatic tuners.  
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