[Elecraft] High SWR, - how much is OK?

Sat Jan 31 17:43:10 2004

Hi Kelly!
After all you should be OK if your CALCUR is set at 3,5 amps or lower.
It is also dependent of witch type of swr you have.
Inductive or capasitive.
Try watching amps while you are transmitting below , centre , higher =
than the dip of resonance on your antenna.
One condition will raise the current and the other will lower the =
current.
It's almost like putting an 8 omh speaker to a 4 ohm amplifier. The =
sound get lower and so does current , while putting 2 ohm on an amp. for =
8 ohm will cause to high current and maybee blow of the final.
this is also the case with radiotransmitters.
73 de LA1PHA Tom.

----- Original Message -----=20
From: "Kelly McDonald" <[email protected]>
To: "List Elecraft" <[email protected]>
Sent: Saturday, January 31, 2004 10:59 PM
Subject: [Elecraft] High SWR, - how much is OK?

> Hello all!
>=20
> After hooking my K2 up to the wrong antenna for the band I was working
> on without a SWR meter or a tuner, and later finding out that I had =
near
> infinite SWR, I am wondering  . . .  how tolerant of high SWR values =
is
> the K2?
>=20
> I think I read somewhere that there was some kind of protection for =
the
> finals in high SWR conditions, but what exactly does that mean? Does =
it
> mean that it will tolerate a 3:1 for a long period, or does it mean =
that
> it will tolerate a 300:1 for a short period?
>=20
> I don't think I did any damage to my finals, but It made me curious.
>=20
> Thanks,
> Kelly
> W4KPM
> k2 # 3879
>=20
> --=20
> Kelly McDonald <[email protected]>
>=20
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