Entries from March 2013 ↓

ANTENNA FARM

75 METER DIPOLE – keep

40 METER LOOP COAX FED SINGLE BAND – keep
I was considering replacing it with a hentenna but it turns out that the delta loop has almost as much gain and is more omnidirectional. Both offer low take-off angles. need to relocate the south support to the top of the 20 meter mag-loop/moxon support.

40 METER LOOP TWINLEAD FED ANTENNA TUNER ALL BANDS BUT 80 – remove
Removed replaced with a twinlead fed windom
30 METER LOOP – remove replace with 80/40 dipole twinlead feed to tuner
Removed replaced with a coax fed 30 meter dipole.

Both of the above antennas need to be combined into a square horizontal loop, fed with twinlead at the chimney or secondary mast or somewhere in between. The objective is an all band loop tuned with the Z-match. Both antennas were removed and the 30 meter dipole was removed too. One leg of the 30metwer dipole was a foot too long and may have been why the thin did not have swr below 2:1.

I used the good copper wire to put up a twin lead fed off center dipole. One leg is aqbout 45 feet. The other leg is about 90 feet. Off center feed point is at 30 feet at the secondary mast.

80/40 METER INVERTED-L – remove
Removed and stored.

2 METER BEAM ON MAIN MAST – repair

20-15-10 METER BEAM ON MMAIN MAST – adjust and remove large rope.

2 METER SLIM JIM ON CHIMNEY MOUNT – relocate in place of copper j-pole

2 METER J-POLE ABOVE MAIN TV ANTENNA – remove

2 METER TWINLEAD SLIM JIM IN THE WORKS
Done. This thing gets to Fort Worth while sitting in the den.

SMALL BEDROOM TV ANTENNA AT CHIMNEY MOUNT – relocate to second dormer.

Add 20 meter moxon from fence mounted wood mast to S/E tree. The moxon was installed from a 2×4 scrap mast at 21 feet. Somewhat high swr and needs tuning. May use 30 neter dipole legs as guys for tis mast.

LCD/LED MONITORS

You see ads for LED monitors, the first thought that comes to my mind is tri color LED pixels, but if the selling price is under $300 you are not getting tri color LED pixels. You are getting high intensity LED backlighting on a LCD flat panel.

We recently purchased such a monitor for under $100. It is an ACER 20 inch widescreen. It is rated at 20 watts. It replaced an old 17 inch flat screen that was consuming 240 watts. My guess is that the new monitor will have paid for itself in energy savings in less than 1 year.