Hi all, I removed three turns on the longest T1 winding and still no peak. Scale show 09 and all segments and trimmer is at minimum value, fully open. What can I do now ? I'm afraid to remove more

at $80 per example Andy is giving these keys away. https://forums.qrz.com/index.php?threads/introducing-the-magnakeyer.589970/ -Justin N2TOH

I have 10 of the original devices, not sure when I will use them but I have them. -- Cecil - k5nwa http://thepartsplace.k5nwa.com/

Justin, Some of the Si Labs have been known to operate well outside their published specification. The Si570 was one, early C grade LVDS versions went right up to 1.2Ghz until they made the

I found this data sheet while reading up on the Silicon Labs SI4721 FM Broadcast transceiver chip, I have to ask if it can be tunes outside of it's specified range into maybe the 4 Meters band or

Thanks Doc! ‘ppreciate your input! I think I will go with the glue gun. I use it for a multitude of other things and thought it might be good to anchor toroids. But since my experience with

Copy that Michael. Thank you. Who said “old dogs can’t learn new tricks?”

Good to know John. TY. Didn’t know if beeswax was still used for that or not.

Isn't this the same stuff that Baby Bells Cheese is covered with? If so then just go to the grocery store.

Hi Allen, There is a sealing ring made to seal the output of a toilet to the sewer pipe directly under it. Most hardware stores stock them. It is a cheap source of beeswax and easy to use. Also,

Hello, ok, I am at the stage to double check XTAL osc works before starting putting covers on it. Questions: 1) Frequency is fine (about 26.995MHz something) but I have just about 0.36 Vpp instead

Group. Following are voltage measurements so far. Supply Voltage 11.89v clk0 1.70v clk1 1.70v C2 3.42v D2 right 5.00v D2 left 4.20v D1 right 4.20v D1

$45~ UNI-730 China plastic paddles (left/tip and right/ring may be reverse wired for a left hand model. Poor copy-paste eBay listing may not reflect what you will get. Rewiring the jack is tight but

This is a wiring diagram for a soldering iron temperature controller that uses a 600W light dimmer and an outlet: ​I used an old 3-wire computer power cord, some wirenuts, and an outlet, all of

Make a DIY temperature controller from a $5 600W light dimmer plus parts: http://www.instructables.com/id/10ish-DIY-Variable-Temp-Soldering-Iron-Controller/ Plug a $10 to $15 Chinese eBay soldering

Hi Hans, Yes, the trimmer is nearly open and I noticed that adjustment is rather "blurred" (not sharp). I wondered if it was possible to change the C8 value instead of removing turns on T1/S3. As it

Jack, These look like (and are priced very right) what is needed here. Hans has included in the QCX firmware the options for a paddle and straight key. Let his electronics form the Dahs

Hi all and, for what it is worth this was my experience of T1. When I wound T1 (which was about 2 weeks before I actually received my 40 meter kit # 2286 in December '17) I experimented with different

Hi Denis MDS should be lower than that... some people have measured -130dBm or better. I wonder if your trimmer capacitor is completely open? (minimum capacitance). If so, the resonance of your BPF

Jack, Thanks for the pointer to QRPguys and their keyer. For $25 they'll sell a single paddle with electronics on the back of the key's frame. $4 shipping. I went for their kit.