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

[Richard Solomon]

You can often find Dummy loads at your local Ham Flea. I found two 50 
Watt Birds
for $10 each at the last one.

73, Dick, W1KSZ

On 3/26/2015 11:15 AM, Fred Jensen wrote:
> Mine works fine at 220, VSWR on 440 is about 1.3:1 and rising fast.  
> On the QRP one I made, I left about 1" leads on the resistors, I had a 
> small brass tube to connect the center conductor down to the bottom 
> plate and I didn't want to cut it.  VSWR on 6 meters is 1.6:1.
>
> 73,
>
> Fred K6DGW
> - Northern California Contest Club
> - CU in the 50th Running of the Cal QSO Party 3-4 Oct 2015
> - www.cqp.org
>
> On 3/25/2015 8:13 PM, Charlie T, K3ICH wrote:
>> Yes, but the inductances are all in parallel.  I built a decent dummy
>> load out of 24, 1200 Ohm, 10 watt wire wound resistors all in parallel
>> between two squares of fiberglass PC board.  The SWR was only about
>> 1.2:1 on 15 Meters and about 1.5:1 on 10 meters.   Admittedly, not a
>> perfect load, but certainly adequate for the low bands just to soak up
>> some RF.
>>
>> 73, Charlie k3ICH
>>>
>>> If you're going to use the paralleled metal film resistor construction
>>> method, be sure to keep the resistor leads short and spaced them from
>>> each other.  Lead inductance will start to become a factor on 6 m and
>>> up.  I built mine with 40 2K 2W resistors and it works find at 100W if
>>> used intermittently.  It's air cooled.  Don't know how much putting it
>>> in oil would improve the dissipation.
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to w1ksz at earthlink.net
>