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Re: [TowerTalk] Oil For Dummy Load

To: towertalk@contesting.com
Subject: Re: [TowerTalk] Oil For Dummy Load
From: "Roger (K8RI) on TT" <K8RI-on-TowerTalk@tm.net>
Date: Mon, 30 Nov 2015 01:12:26 -0500
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
That transformer fluid is basically, plain old 200 fluid. It may, or may not contain additives. IOW, it's good stuff.

You can probably get it in 5 gallon lots. Get a group buy? OTOH how many hams are willing to pay $50 a gallon?

73

Roger.  (K8RI)


n 11/29/2015 9:53 PM, Martin A Flynn wrote:
The C84025-1 Coaxial Dynamics load (2.5 kW CCS) at our club station uses Dow-Corning Xiameter PMX-200 silicon fluid.

A gallon was less then $50.00. We would have went with Diala ZX-4 transformer oil, but could not find reliable information if the residual silicon fluid would safely mix with the Daila.

In either case, the right part is fairly inexpensive - why use a substitute?

73 Martin Flynn
W2RWJ


On 11/29/2015 9:02 PM, Bryan Swadener via TowerTalk wrote:
No, especially when you're pumping a kilowatt into a 90W-rated Globar in only a gallon of media that has only the tin bucket itself to transfer the heat to atmosphere. You need _every bit of advantage_ you can get. As it is, those DLs are rated a kilowatt for only a few seconds. That's why I stopped using my HN31 with an amplifier, and built my compact 1500W (100% D/C) load.

Bryan WA7PRC


From: D. Scott MacKenzie
To: Bryan WA7PRC
Sent: Sunday, November 29, 2015 5:42 PM
Subject: RE: [TowerTalk] Oil For Dummy Load

Mineral oil is a proper substitute - and not "dubious."


-----Original Message-----
From: Bryan WA7PRC

Sent: Sunday, November 29, 2015 8:27 PM
To: towertalk@contesting.com
Subject: Re: [TowerTalk] Oil For Dummy Load

I found one gallon of actual transformer oil for FREE (unless you count having to drive 2 miles to get it).Why mess around with dubious substitutes when it's available for FREE?
Bryan WA7PRC



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73

Roger (K8RI)


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