[time-nuts] Making a 10811 better
jfor at quikus.com
Wed Sep 21 15:06:25 UTC 2011
I don't know. There was a very long thread on Tekscopes2, but I didn't
follow it as I have some of the real stuff and my probe is not leaking.
> Howsabout HFC-236fa - very similar properties to R114 but not banned.
> -----Original Message-----
> From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
> Behalf Of Jim Lux
> Sent: 20 September 2011 22:38
> To: time-nuts at febo.com
> Subject: Re: [time-nuts] Making a 10811 better
> On 9/20/11 12:46 PM, J. Forster wrote:
>> Likely one of the Freons (TM) or Sulphur Hexafluoride.
>> Tektronix used a Freon in their 40 KV High Voltage probes. The Vapor
>> pressure of some of those compounds is low at 70F, but they do have to
>> be sealed.
>> Unfortunately, virtually all Freon useage has been banned by the EPA
>> (they are said to be "greenhouse gases") and the stuff in now almost
> time-nuts mailing list -- time-nuts at febo.com
> To unsubscribe, go to
> and follow the instructions there.
More information about the time-nuts