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The dummy load my group (Greater Cincinnati Builders Group) built used mineral oil, which is non-toxic. We tested the DL with a 200W signal for 5 minutes without failure of any components, although the mineral oil could probably do French fries. A construction article on the DL has been accepted by QST, but no projection on the date of publication yet. This shows the top of the DL. The cost is under $20.
From: Mvs Sarma <mvssarma@...>
Sent: Friday, December 15, 2017 11:53 AM
Subject: Re: [BITX20] Ebay 282363911577 50ohm? #parts #w8tee
Later i can even fill that can with transformer insulating oil, .
I had bought 10 lot of dummy loads made at florida i suppose.I am planning to use a heatsink mount and housed in a can.
On Fri, Dec 15, 2017 at 7:07 PM, Craig Wadsworth <cwadsworth@...> wrote:
I already have the parts to build one of K4EAA / W8TEE’s dummy load and power-to-voltage converters, but this is tempting as an even lower-cost option. What do you all think? Grease and heat sink? Oil bath?