Agentgates´s TPU setup with strange wavehill hump

[bullsnbears1]

I bought the sewer pvc which is at least 1/2 as thick as the schedule 40 that I have seen here. Do you think it's a thickness thing or a material thing?

[Mk1]

@all

Many test would need to be done before knowing for sure , but i have seen my share to coil on pvc not doing much , so maybe test on cardboard and plastic type , thickness maybe or deflective surface.

I am staying clear of those .

Mark

[ramset]

Very good point fellows
Card board was what Tony specified??

Chet

Actually Card board is all Tony ever uses in this thread !

[PARAV]

Very good point fellows
A was what Tony specified??

Chet

Actually Card board is all Tony ever uses in this thread !

Mark , Chet and all.

I agree with not using PVC pipe as there are numerous mention of it in some of my Ham radio -home brew antenna articles (winding coils for antennas) where they state that PVC has many contaminents in them - mostly carbon etc. so don't use them.

I also found a source of heavy cardboard type tubes at Home Depot--used for pouring cement down and around fenceposts and deck footings and such. The smallest dia . I saw was 5.5 inches and they progressively get larger to about 20 or 24 inches or so, trouble is they come in 6 to 8 foot long pieces --enough to make coils for everyone in the neighbor hood. Anyway I'll grab some of that 5.5 inch stuff and have a go at it as I think Mark is really on to something here. Keep up the good work Mark
PAR

[ramset]

PAR
Thanks
It is good to use something passive [no carbon etc .surprises]

Going to check a local fabric supplier for empty cardboard rolls/tubes
Seems like we should be able to get these free somewhere?
I hope to stick as close as possible to Tony's original post.

Chet