DELARA at the ARC
More station improvement
A while back, I took Stan's Hustler 5BTV Vertical Antenna that was erected at the
edge of the bush on the east side of the building home with the intention of
finding out why it wouldn't load on any band. I finally found that the 20M trap was
off its recommended dimension by 4"!! After re-adjusting that, things fell into
place pretty well across most bands.
I took it up yesterday planning to put it back up in the same spot but the bush had
other ideas. It had grown into the vertical space where the vertical would be so I
had to "trim" it to make room (Picture 1).
Once that was done, I secured the antenna to the post and was ready to hook the
coax up to it and test it. Knowing Murphy shows up in places you're not expecting,
I decided to hook a dummy load to the coax and test the run from inside the
building. The SWR was infinite!!!! I found a connector splice at the corner of the
building so I tested it each way from that point. The coax was fine from there into
the building but was open from there to the antenna, This run of RG-213 was
buried in the grass 2-3" deep. OK, here we go pulling up about 40' to find the
problem. (Picture 2). The nicely sliced coax cut was about half way out to the
antenna (Picture 3). Fortunately, I had brought a run of RG-213 with me to replace
the entire run so I proceeded to rip out the old and put in the new. (Yeah, it was
hot in the sun). Unfortunately, I didn't have a long enough run to make it the
entire way (lacking about 15') so I made up another run, connected everything
together and tested it. It now worked so I re-connected the 5 radials that were
laying close to the base. It may need some further tweaking on the other bands
but the SWR on 40 is close to 1:1.
Picture 4 shows the completed installation. Hopefully, this is the last coax cut we'll
find in the grass but who knows. Murphy is always lurking around waiting to make
your day!
An antenna change for ARES / VHF
Craig (W8CR) brought the lift over to the ARC and with Stan as ground support,
we replaced the VHF/UHF Log Periodic antenna on the west tower with a 2/440
beam. We then took the antenna support down that was on the east tower at
about 40' and put a new 8' long 2x4 at the top of the tower. This allowed the 80M
PH Inverted V to be farther away from the tower than before. SWR readings after
putting the antenna back up showed a 1.1:1 at 3870. See attached pictures.
The coax from this antenna is still connected to the 80M CW jumper going into the
building for testing purposes.
We also tighten up the GOTA dipole so it is now a little higher than it was.
Click picture for expanded view