I just received a lively email from a fellow named Liam. He is currently working on hid Boy Scout merit badge for Amateur Radio. He sent me a nice link on storm spotting and I am reposing it here. http://www.improvenet.com/a/become-a-storm-spotter-from-home
After watching a demo by Tim Nicely (AC8VQ) at the September SOARA meeting, where he built a portable NVIS antenna to use with his Yaesu 817, I had to have both.
I went to the farm and built a permanent NVIS antenna following the suggestions from DXEngineering at http://static.dxengineering.com/pdf/WP-NVIS-Rev2.pdf. Used a Jetstream 1:1 balun at the top of the mast and used 12 gauge stranded wire for the radials. used the lengths 25′ and 38′ for the radials.
With the tuner it tunes easily to 40m and 20m and is a bit high SWR on 80m. Need to adjust a but, but it is wonderful for the QRPing i am doing.
This spring and summer I built my Solar Ham-shack up on the hill behind the cabin at the farm. It is a 12’X16′ A-frame with 200 Watts of solar panels, LED lighting, and power-ports for my radios. Moved the 2-meter antenna from the cabin.
Went to my first Dayton Hamfest as an amateur radio operator yesterday. Hung out with Tom n4lsj and Tony and had a good day. Bought a few cables, an antenna, and a connector.
Was at the SOARA meeting talking with a young fellow who needs to take the Tech test because he let his lapse. I suggested that if he knew the following formulas, cold, the test is much easier. Here we go:
Ohm’s Law: E=IR (VOLTS = AMPS * OHMS)
Power Equation: P=EI (WATTS = VOLTS * AMPS)
Wavelength/Frequency: 300 / ___ MHz = ___ Meters
Just plug in what you know and solve (multiply or divide) to get what you need to know.
Spent the last couple of nights playing with a simple electronic circuit to interface my PC to mt HT (BF-F8HP). Connected in through the microphone/speaker jacks to control audio and PTT. The PC connection uses a serial port to control a relay to send. Very simple but fun to play with.
Here is the code in BASIC-256 (http://www.basic256.org) to control the interface.
for t = 1 to 10
say “the time is ” + (hour)%12 + ” ” + minute
say “november 4 romeo echo november, n 4 r e n , testing”
In old “Snowball” the Volvo I have my TYT-9800 and it has the voltage display feature. On the way home from church, Sunday, the dash lights were all glowing just a bit. On old Volvos that is either a sign of a bad battery or a bad alternator. The voltage was at 11.5, 11.4, 11.3 as we drove home and this morning it was 11.0. New alternator was installed and we are back to charging.
If the car has broken down… but she didn’t.
- 3/4″ PVC pipe, elbow, tee, and 2 bushings to 1/2″ thread
- 2 #8 Brass screws, nuts, and washers
- 2 1/2 copper sweat to screw
- 36″ of 1/2 copper
- 1 cabinet mount RF connector
- RG58 coax
- small bits of 12 gauge wire
- wire ties and tape
- anti-oxidant compound