Think I would stick with the 102" whip and sort out the problems.
Think that the results will be more pleasing to you in the short and long run/view.
Don't mess around and just break down and get the proper 6" spring. Those 4" springs will just make the antenna too floppy; the 102" whip is already floppy enough.
SWR on a 102" (actually 108" with the spring) - IIRC - is 1.5 when done right; so you aren't that far off. Stick with it.
Make sure that you are testing the SWR in open ground far away from other vehicles, power/overhead wires, and large metal objects.
Double check that the puck has a solid ground.
If you think the antenna is too short, stick on a 10 inch shaft at the bottom of the springSWRs on a MFJ 259B were way off, lowest somewhere around 31-32MHz so I welded up a roughly 2-1/2" spacer that sits under the springs, for testing. (Spacer comprises of two stainless steel bolts welded head to head, with a washer welded onto the bottom bolt to spread the load on the puck.) SWRs are now lowest around low 30MHz IIRC, but still quite a ways off from 27MHz. Any suggestions?
You should buy in bulk and sell those mounts, Eddie.
Bet you’d sell a bunch. I’d love one.
Rather than 102” whips, I’d use 4’ Firestiks for a perfect small attic antenna.
Yep Riverman, I think I got that idea after the first time reading a Homer Home Depot ad here on WWDX.
I have and use that exact spring. Total length / height from hex nut to hex nut is 4.175"
I agree. Two pieces of steel, (whip and ferrel / base) connected with solder or a set-screw. What could possibly be wrong? My whip has a set-screw. I removed the screw and trimmed the bottom of the whip to obtain an acceptable SWR and reinstalled the screw.A bad base on a whip? They are just silver soldered on, so heating them and then letting them cool should 'fix' things.