Welcome to the official website of SEMARA – The Southeastern Massachusetts Amateur Radio Association, Inc. We are an amateur radio club established in 1932 that owns our own property in Dartmouth, Massachusetts and has over 340 members. If you would like to contribute to this website, please contact the Web Committee by using the “Contact Us” link at the top of this page.
At the May 4th Business Meeting, Joe Tavares, KC1BGF, will give a Tech Talk on the “One Transistor Marvel” transceiver. It is a Dave Ingram K4TWJ design that Joe found in a QRP builders book.
The circuit is a one transistor crystal-controlled CW transceiver. The oscillator puts out about 200 mW in the 40-meter band. On receive, a hi-Z crystal earphone across the emitter resistor picks up signals that beats with the oscillator.
This is basically a crystal set with a BFO.
When the code key is pressed, it becomes a transmitter and transmits on 40-meters.
It can be connected to a full size 40 meter antenna. A one or two foot length of wire will work just fine for experimenting.
Shown in the upper right is a pi network you can add to the transceiver. Its function is to filter out unwanted frequencies. IJoewill eventually add one to his unit but it will work without it. Joe needs to find the right toroid to wind the coil for 40 meters. Joe’s unit is built into an Altoids case.
Joe found that when he connected the earphone, the transmitter won’t work. He then decoupled the earphone with a 10 uH coil in series with the earphone; and the transmitter started working again. He figured it would have a high reactance to RF; but it does allow audio to the earphone. That is the only change he made to the circuit. Joe hopes his addition doesn’t cause the oscillator to chirp
These are the values for the pi network:
40 m 470pf 16t #28 wire on T-50-2 toroid
30 m 330pf 13t #28
20 m .220pf 12t #28
Joe Tavares, KC1BGF
Three Different Licensing Classes
- Nashua Radio Club — Amateur Extra Class
April 28-30, 2017
Dartmouth Hitchcock Nashua
2300 Southwood Drive
You can find more information at <http://n1fd.org/license-classes/>.
- Genesis ARS — General License Class
May 13 and 20, 2017
Genesis ARS meeting room
Contact: Chris N1IR, <firstname.lastname@example.org>
- Cape Ann ARA — Tech-in-a Day Class
May 13, 2017
Contact: Rick Mayberry <email@example.com>
Congratulations to these hams who passed their exams at the April 1, 2017 VE Session:
Elanor Gardner, KC1HJF – Technician
James Ace Thackston, KC1HJG – Technician
Paul C. Malley, N1TWK – General
Edwin T. Scallon, N1KHL ––– Extra
Enjoy your upgraded privileges!
New England QSO Party on May 6th and 7th, 2017
Saturday 4pm EDT to Sunday 1am EDT
sleep for 8 hours;
Sunday 9am EDT to Sunday 8pm EDT
The NEQP is a great time to check out antenna systems and offers a moderately paced opportunity to work new states and countries. You’ll find a wide variety of participants, from newcomers to experienced contesters, all interested in making contacts with New England stations.
The New England QSO Party is 20 hours long overall, in two sections: 4pm Saturday thru 1am Sunday, and 9am Sunday thru 8pm Sunday. read more
MARITIME RADIO DAY – http://www.trafficlist.net/mrd/
Date: 14th April 12.00 GMT to 15th April 22.00 GMT
Bands: 160m, 80m, 40m, 30 m, 20m, 15m & 10m
Mode: CW only
Exchange QSA, QRK, name, callsign of last or favorite ship, aircraft,or maintenance company QSA 1 .. 5, strength of receive signal, QRK 1 .. 5, readability and additionally a TR, msg and/or a QTC if you like.
Congratulations to this ham who passed his Technician exams at the February 4, 2017 VE Session:
Derek J. Morse, KC1HAO – Technician
Enjoy your upgraded privileges!
Jan. 18, 2017 – 0001Z to 2359Z
W1AA / MSC – The Marconi Radio Club will represent the 1901 Marconi Shore Station “MSC” in Siasconset on Nantucket Island off the coast of Massachusetts.
We will NOT operating from Nantucket Island as the 1901 “MSC” location is now on private property and inaccessible.
KM1CC – The Marconi Cape Cod Radio Club will have two stations active for International Marconi Day.
During the most famous sea-going disaster of the twentieth century, the Siasconset station played a critical role. Late on the night of April 14, 1912, duty operator Matt Tierney received distress signals from the sinking Titanic’. Siasconset was the first mainland wireless station to receive them, and he immediately alerted all other stations of the tragedy.
DX QSL via the W1 Bureau; Stateside QSL via K1VV with a #10 Business size envelope SASE.
For Information – https://www.qrz.com/lookup/km1cc
Marconi Station Cape Cod History:
“MSC” Marconi 1901 Station History:
(Submitted by Whitey K1VV)
Sturdy Memorial Hospital ARC offers a Technician Class:
Classes starts on Wednesday, January 11th at 7:00 pm-9:30 pm.
Classes are held in Conference Room A,B,C at the Sturdy Memorial Hospital. It will run for 9 weeks and will end with a test session.
There is no cost for the class; but students must buy the class text/workbook for $30.00.
To sign up, email Gary – KB1KA at firstname.lastname@example.org.
(Adopted from EASTERN MASSACHUSETTS SECTION NEWS – January 2017)
Zane Grey was born January 31, 1872. Members of the Tonto Amateur Radio Association, Inc. will be active from January 28 – 31, 2017 to celebrate his birthday. They will use the special event call sign K7Z. Members will be operating from their own QTHs as well as from the Zane Grey Cabin in Payson, AZ.
Preferred frequencies will be in the General band segments. Like Us? Spot Us! A special QSL card will be available for the event.
Complete details at https://www.qrz.com/db/k7z.
(From Bruce Sperka, AD7MM email@example.com)
Special call sign prefixes celebrate Canada’s Sesquicentennial. Radio Amateurs of Canada (RAC) has secured permission for all Canadian radio amateurs to use special call sign prefixes to celebrate the 150th anniversary of Canada’s Confederation during 2017.
Starting on January 1, 2017 radio amateurs and clubs with:
- VA-prefix call signs may use CF
- VE-prefix call signs may use CG
- VO-prefix call signs may use CH
- VY-prefix call signs may use CI
Use of the special prefixes is optional, and Canadian radio amateurs may choose if and when to use the special prefix at any time during 2017.
VY1AAA, the Yukon Canam Contest Club, will use the special call sign XK150YUKON from January 1 until March 1. For the rest of 2017, VY1AAA will operate using either CI1AAA or VY1AAA.