[Elecraft] Fw: Don't have a 50W dummy load

[Cliff Frescura]

" Using a 100W light bulb will not provide the required impedance, and will
produce inaccurate results and possible damage the transceiver."

True, also - In the "old days" there was no need to specify *incandescent*
light bulb.  Wonder what would happen with a CFL or LED lamp (do not try
this)?

The key word is Resistive.

73,

Cliff K3LL

-----Original Message-----
From: Elecraft [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Matt
VK2RQ
Sent: Wednesday, March 25, 2015 11:52 AM
To: Bob Gibson
Cc: Elecraft Reflector
Subject: Re: [Elecraft] Fw: Don't have a 50W dummy load

For the calibration procedure, you need the load to be a known 50 ohm
resistive impedance. Using a 100W light bulb will not provide the required
impedance, and will produce inaccurate results and possible damage the
transceiver.

73, Matt VK2RQ

> On 26 Mar 2015, at 5:25 am, Bob Gibson via Elecraft
<elecraft at mailman.qth.net> wrote:
> 
>  HOW ABOUT A LAMP WITH 100 WATT BLUB, THATS ALL US OLD GUYS HAD!   73s Bob
W5RG
> 
>    ----- Forwarded Message -----
>  From: Warren Merkel <hullspeed21 at gmail.com>
> To: elecraft at mailman.qth.net
> Sent: Wednesday, March 25, 2015 1:17 PM
> Subject: Re: [Elecraft] Don't have a 50W dummy load
> 
> That kit from OHR looks nicely done.  I wonder if the pcb was immersed in
a gallon can of mineral oil instead of the included case, how much more
power could it withstand then?  5x-10x maybe?  I could use the enclosure for
something else. Otherwise I'd get a full paint can kit off ebay for about
the same $.
> 
> Warren KD4Z
> 
>> On March 24, 2015 5:39:04 PM EDT, Brian <kb9bvn at gmail.com> wrote:
>> Excellent advice Don.  I bought a 100w dummy load kit from OHR. It's 
>> called the RFL-100 and it's about $40, comes in a very nice cabinet, 
>> and takes less than an hour to build.  It has come in handy more 
>> times than
>> 
>> I can count.
>> 
>> http://www.ohr.com/rfl100.htm
>> 
>> Oak Hills has some good goods.
>> 
>> 73 de KB9BVN
>> Brian Murrey
> 
> 
> --
> Sent from my Android device with K-9 Mail. Please excuse my brevity.
> 
> 
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