Made my first POTA contact Oct 7, 2021, this shows the number of states that I have had a contact with someone in a POTA entity (usually a park) since that date. The hardest ones to get checked off are Hawaii and Alaska, in that you need to make a park contact with these states and not just a contact.
On June 9, 2022, I operated from VE-5620 Yarmouth Natural Heritage Site, located southeast of St Thomas, ON. Conditions seemed to be marginal, although I did make 23 contacts, 3 P2Ps, the most notable contact was with NL7V from North Pole, Alaska. I was very pleased to make an activation of a new park on the POTA system.
Next I hope to activate VE-5617 Calton Swamp Wetland System and VE-5616 Hawkins Tract.
Neophyte Two Chip Direct Conversion Receiver – VE3OT Version
The original Neophyte Receiver was published in OST, February 1988, and used the new Signetics Si602 oscillator-mixer chip to directly convert radio frequency signals to DSB audio and the National Semiconductor LM386 audio amplifier chip to provide sufficient signal gain to drive headphones or even a small speaker. This receiver uses an improved mixer chip, NE612, which is a direct substitution.
Mitch Powell, VE3OT, modified the Neophyte using parts on hand so that his Fanshawe students could build a simple receiver, gaining circuit building skills while being exposed to the hobby of Ham Radio.
Two 10.7MHz IF transformers are used as an RF pre-selector, tuned down into the 40m ham band by placing about 100pF of capacitance across the main coil winding. A third IF transformer is used as the Local Oscillator coil, suitably tuned by additional capacitance and a variable capacitance diode, or Varicap, biased by a DC voltage from the 10kW tuning potentiometer. Mitch used two common power rectifier diodes, 1N4005, in parallel as a varicap. Audio from the NE612 is bandwidth limited by a simple C-R-C low pass filter, fed into the 50kW volume control, and then applied to the inverting input of the LM386N audio amplifier. The original Neophyte design used both outputs of the mixer and both inputs of the audio amplifier for improved dynamic range and lower noise, but lacked a volume control.
Component Side Printed Circuit Board View with component layout.
Note that a 0.1uF cap has been added to the LM386 power pin (6) for improved stability. The Tuning Potentiometer can be a 50K linear for slightly reduced power draw.
We moved in 2013 and I had not set up any kind of station at the new place since. Before the 2016 CQ WW SSB Contest, I decided to try to make some contacts during the contest so I needed to set up a station with some kind of antenna. I dug the TS50 out of the dust bin and used it. I resurrected 2 20M mobile whips, stuck them up on a pole in a dipole configuration and was on the air. As you can see in the log, I did make some interesting contacts on Sunday afternoon. I did not realize that TM4L was in France until I looked up the call after I shutdown. Nice one, considering there were no signals to be heard on Friday night at the beginning of the contest. Nice restart to a hobby I have enjoyed since 1965.
The VE3STR tower was taken down, re-zinced and repainted and then ona beautiful morning in early October was raised again, courtesy of Yarmouth Cranes. For the full story and pictures, check out the article at the club site web site.
Bob Rice VE3HKY has produced another beautiful antenna, this time it is called the 7-Band Portable Dipole Antenna. I attended the London Amateur Radio Club meeting last night and he gave a talk on his new antenna. His previous 7-Band Semi-Vertical Antenna is documented at his site. His new portable dipole seems to compare nicely with the W3FF Buddipole. Contact Bob at firstname.lastname@example.org for more information, he has a DVD which shows him constructing one of the antennas. Let me know if you build one!