Sometimes a lot of requests arrive here via the contact and this is another one. I was asked if the Slovakian man who made antennas made a J-Pole for the 2m/70cm band that could be used maybe on PMR 446 MHz. So it appears it could be, below is the photo and the link to where the antenna can be purchased on line:
Maybe worth keeping an eye on this seller as recently he had a 934Hz CB antenna for the car for sale. Guess people still need them as have heard some users on this band in the last summer or two.
Photo (c) Ebay Seller Stanislavpalo
Item Number: 291397073528