[Lowfer] Need dummy load resistors

craig wasson craig at wasson.com
Wed Mar 24 16:36:32 EDT 2010


Remember that if you are buying the typical cylindrical resistors with the 
value marked by colored bands, if the band indicating the accuracy is wider 
than the rest it means it's a wirewound resistor.  As Dex said - you want to 
avoid wirewound resistors for RF use.

Craig

----- Original Message ----- 
From: "Andy - KU4XR" <ku4xr at yahoo.com>
To: " European & UK) and MedFer bandsDiscussion of the Lowfer (US" 
<lowfer at mailman.qth.net>
Sent: Wednesday, March 24, 2010 2:27 PM
Subject: Re: [Lowfer] Need dummy load resistors


Thank You gentlemen:

Dex you may be right on those resistors. I am going to go by RS on
the way home and pick up their 5 pack of 100 Ohm - 1 Watt resistors.
2 paralleled should come very close to 50 Ohms at 2 watts power
handleing. The 10 meter rig runs between .75 to 1.5 watts on peaks,
so that should handle it, and hopefully the SWR will be flat.

Time to head home now, hope you guys have a great day; 73 :::



Andy - KU4XR - EM75xr - Friendsville, TN. USA
LOWfer Beacon " XR " @ 185.29875 KHz ( QRSS-60 )
Coordinates:  N:  35º 43' 54" - W:  84º 3' 16"
http://www.myspace.com/beaconxr
http://webpages.charter.net/ku4xr/


--- On Wed, 3/24/10, Dexter McIntyre W4DEX <dexter.mc at gmail.com> wrote:

> From: Dexter McIntyre W4DEX <dexter.mc at gmail.com>
> Subject: Re: [Lowfer] Need dummy load resistors
> To: "Discussion of the Lowfer (US, European, & UK) and MedFer bands" 
> <lowfer at mailman.qth.net>
> Date: Wednesday, March 24, 2010, 12:17 PM
> Sounds to me like those resistors are
> wire wound Andy. Those type are
> resistors at DC but inductors at RF. Parallel several
> 1 watt
> composition resistors to get 50 ohm or so.
>
> Dex
>

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