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LF: Dummy loads at LF

from [G0MRF] [Permanent Link][Original]
To: [email protected]
Subject: LF: Dummy loads at LF
From: [email protected]
Date: Fri, 7 Nov 2003 08:02:06 EST
Reply-to: [email protected]
Sender: <[email protected]>
In a message dated 11/7/03 12:42:28 PM GMT Standard Time, [email protected] writes:


The Vishay RCH50 50W film resistors sold by RS components are pretty
good value at about 2-3 pounds each, and work OK up to HF - but
obviously you need a hefty heatsink as well as the resistors.

Cheers, Jim Moritz
73 de M0BMU




Hello Jim / Gary.

As you say the wirewound types can give a very acceptable return loss at 136kHz and are much cheaper than a 'non inductive type' of similar power.

I have also recently used two of the RCH50 type resistors ( but 100 Ohms) in a wilkinson combiner at  100MHz. - they worked just fine.

73

David   G0MRF
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