NEC-LIST: 4NEC-2

I am a relative new comer.

I am still learning the basics of the modeling software "4nec-2" and am trying to get an idea of how I could model an existing
antenna for modifications and do the following:

I am about to be the proud new owner of a very old three element beam. (Hornet TB-500).

It is a very simple tree element trap yagi, all spacing is 7' between elements and it is on a 14' boom.

As I understand it two bands (15 and 20) work fine, but the 10 meter band doesn't tune up correctly.

Since this is a trap yagi, I am thinking about taking the traps apart to see if I can find the problem. Then rebuild or clean-up the
traps.

As I understand it they used to have a problem with water getting into the traps and causing some kind of problem, so it is probably
just a simple cleaning up.

Once I can figure out the problem and get it going, I am wanting to see if I can increase the forward gain of the antenna. Will
putting the antenna on a longer boom do this? But I don't know how to model this in the software.

  73 fer nw es gud DX,
QSL VIA: BUR, LotW, e-QSL
Bob AD5VJ(AAR6VM)
Old calls: WY5L/KH3-KE5CTY-N5IET
http://www.ad5vj.com/

Member: CTDXCC, NTCC, STXDXCC
FISTS: # 12637, SKCC# 2369
10X# 37210, FP#-1141
SMIRK#-5177, RARS #-149

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