I'm in Southern England. I don't think it's common to have parallel gas lines here- I only remember seeing single pipes being laid, but of course -they could be in addition to those existing! Also- the beat is too constant- an interference beat would probably go randomly in and out of phase. I have no knowledge of how gas pressure is regulated here though.
On May 4, 2:32 pm, Steve K <[email protected]> wrote: > It may be that two sources (my thought 2 paralell gas lines going into > a beat frequency. Trev, where do you hear this? Sorry if this is a > repet question, but US data base is pulging > > On Apr 26, 1:15 am, Trev <[email protected]> wrote: > > > > > Many here report a wavering slow pulse to the Hum. > > I heard it last night particularly strongly. > > A throbbing diesel engine has a similar pulse to it and is one of the > > common descriptors of Hum.http://presscore.ca/2011/?p=2261- Hide quoted > > text - > > - Show quoted text - -- You received this message because you are subscribed to the Google Groups "Hum Sufferers" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/hum-sufferers?hl=en.
