RSGB 2018 Convention lecture - VHF Baluns: Fact and Fancy

[@melissarainchild]

ONLY 75 likes??? After 3 years? This stuff is pure gold! Thanks for posting, best 73's...

[@TheRSGB]

We're glad you enjoyed it and found it useful. We hope you 'liked' it!

[@craignels]

My takeaway from this talk is that the goal is to present a high impedance to outside shield current flow. A proper inductor would do this well over a wide band of frequencies, but this is difficult to implement with many ways to do it wrong, so one alternative is to use frequency dependent solutions. Fine for fixed frequencies. Ferrites can dissipate the shield currents as heat, but do not present an impedance to current flow so the antenna currents are not forced into balance. I would love to hear future discussions about non-conductive booms and proper inductors possibly air-wound on the non-conductive booms behind the reflector. Fantastic talk, thank you!

[@pavel-co7wt]

Nice, I bookmarked this and now building a OWA 6el 70cm satellite antenna, I came back to check to make a for proper feeding... Thanks!

[@TheRSGB]

Glad you enjoyed it!

[@alexmartin8521]

Still being watched . . . Thanks Ian.

[@DucatiMTS1200]

So interesting and very well explained. Thank you.

[@TheRSGB]

Glad you enjoyed it!

[@1redrubberball]

Very good presentation from W/K land, guys!

[@martingibson8273]

gr8 video - totally opposite to what i was told or led to believe in eliminations. Thanks a bunch. Email sent.

[@ChoppingtonOtter]

Really well explained. Thank you.

[@TheRSGB]

We're glad you enjoyed it

[@SkyCharter]

22:00 What, then, is the point of a Pawsey Stub?

[@SkyCharter]

@Farik Nasrullah That was somewhat a rhetorical question. Reference "Balanis, Constantine. Antenna Theory - Analysis and Design. John Wiley & Sons, Inc., 1982, pp. 365-368" for another view.