by Steve KZ1X
A few months ago I conducted an email ‘straw poll’ to gauge the interest in a club construction project.
It has been quite some time since the last such project.
The target date proposed for this project is the October 14, 2019 OCRA meeting.
This year’s idea was to build a very simple, but great quality and low cost Morse tutor keyer kit, and to back it up with over-the-air Morse lessons at some later date.
The interest level in the kit itself was rather high, approximately 21 persons, and then others responding in ways other than via email. Some persons responding are DFMA members, as the email went out on the joint mail reflector.
Perhaps half the responders expressed concern about their electronics assembly skills.
They either were interested but felt it might be too complicated, many have never done anything like this before, they lacked the tools, were worried about success, or how to troubleshoot, needed help, and so forth.
The interest level in the Morse lessons was also high, higher than I expected. Some people wanted to get more proficient at their existing Morse skills and others wanted to learn from scratch. Still others already have Morse skills but just wanted to build the little kit!
Addressing the Concerns
To address the kit building concerns, at least two and possibly several more assembly workstations will be set up at the OCRA club meeting site, which for this session could start 30 minutes earlier than normal. The extra time would allow for everyone who wanted to, to get a chance to assemble and test his or her keyer.
Plenty of experienced builders are in the club and plan to attend this meeting, so there will not be any shortage of assistance.
To make sure the vendor can get the kits out in time, do not wait until just days before the event to order yours!
- Who makes this kit?
A small New Hampshire firm headed up by K1EL, a very well known ham whose call is almost synonymous with Morse keyer accessories.
- How do you get a kit?
Order it from the link below.
- How much does it cost?
The price currently is $22 plus shipping. The vendor is selling the kits quite near his raw parts cost, to assure it stays popular among newcomers to Morse. Another product sold by the same vendor, with similar functionality, costs almost 5 times this price.
- How long does it take to get the kit?
About 4 or 5 days, here in NC. It comes USPS.
- What else do you need to make the kit work?
Three AA size alkaline cells.
- What tools do I need?
It is best to have needle nose pliers, a small flush cutter, solder, and a temperature-controlled soldering station. These links are just high-quality suggestions, for those wishing to equip one’s own new workbench. There will be tools available at the club meeting.
- How long does it take to build?
Between 15 – 45 minutes, depending on skill level, equipment, pace, etc.
- Are there any surface-mount type parts in the kit?
- What happens if it does not work?
That is not likely to happen, if you build yours at the club meeting there is a near zero chance to have this kit not work.
- Can I get my kit and build it myself before the meeting?
Yes, of course, and then you can help others!
- What do you get in the kit?
All the parts needed to make one complete keyer assembly, except for the AA cells.
The vendor also answers many of these questions, of course, including a complete description of what the keyer does.
Check out the kit web page at this URL:
Here is a picture of the box as it comes from the vendor, located in New Hampshire.
The keyboard and mouse are shown for scale.
Inside the small white box are the circuit board and a bag with the parts needed to assemble the unit.
Here is what the unpopulated circuit board looks like, as you get it. (Yes, the AA cell holder is already mechanically attached, but NOT soldered.)
The bottom side of this circuit board, where the soldering takes place, looks like this:
There are approximately 54 individual solder connections to make.
Here is the bag of parts:
and when assembled, it looks like this:
The assembly manual is available from the link above, and there is a button to click to place your order.
Please post any questions you may have to the OCRA-DFMA reflector.
Looking forward to the October 14, 2019 club meeting and the construction project.