Ultimative DL1DN sanitary cheap DIY QRP telescopic antenna uSDX QSO on 40/30/20/17/15/12 + schematic

I build a simple and cheap but very efficient QRP telescopic whip for 40m 30m 20m and 17m (15m and 12m also)
This antenna works without radials or counterweight You are the counterweight ;)
I call it:
Ultimative DL1DN sanitary antenna
QSO/ contacts made with: (Thank you, you made my day!)
IN3HDE (40m)
EA5HJV (20m)
EA5ISM (20m)
CT1ISZ (17M)
OK1ZCF (30m)
For schematic watch video
I bought the antenna on ebay years ago they are 1,4m and cost about 8€
40m is DN50 (54mm outside)
Wire is about 0.75 sqare mm +- 18AWG
My QRP lifestyle:To make contacts with equipment as simple as possible to get the most out of nearly nothing !
73 David Dl1DN/QRP