As with everything in life, size matters. So here we have the longest BNC telescopic antenna that we can provide;
Our RR-112 Super Long Telescopic BNC Scanner and Ham Radio Antenna.
- 7 7/8" (200mm) Retracted
- 50" (1300mm) Extended 1.27m or 4' 3" in old money!
- 10 Sections
Easily Long enough to give you a full 1/4 wave on all frequencies between roughly 70 - 400MHz (by using element length calculator.) Fully retracted just a little bit long for a 1/4 wave on the 70cm band.