--- In ultralightdx@..., "farmerik"
> It just got me wondering if I could block signals from more of the sides, and make any portable much more directional on the internal ferrite rod. Thanks - FARMERIK

Probably not, I'm afraid. In your collection you have that fine Heathkit portable, with a 7-inch ferrite rod. I'll bet it's more directional than the ULRs with only internal antennas. When it comes to antennas, size matters.

73,

Jim, KR1S
http://qrp.kearman.com/