Recent content by Dolmetsch

6 years later, Transmitter still working well. I used it a few weeks ago in the NRR event. Look for me around 3555 usually.

I am sorry but I built it a while ago and didnt think to take pics. It isnt complicated. It is somethng that can be built in a day if you have everything ready. I have now had successful QSOs using it and my regen together. as in the video. I dont think I would change anything. It works better...

Glowbug QSOs Just an update to report I have had some successful glowbug QSOs using my one tube regen rx and my 50l6 tx. It works very well, Yesterday I made a X-tal spotter for my rx. I take the X-tal I am going to use in the TX, put it in my Xtal spotter. Press the button and tune the regen...

A new one at night. Longer louder etc.YouTube - Ham Radio After Dark Got two sig reports from NC so it is getting out fine. Don VE3LYX

Sig report :DI got an SWL report from a N9--- in NC this morning . He said he could hear me calling CQ 1100 to 1106 on 3580. Said it wasnt strong but in the clear. Since I live in Bellevile Ontario that makes me happy and the project a success. I was worried about if I could be heard down the...

I made a short video of the 50L6 transmitter operating and some in the dark footage as well with the tube glowing and my RF indicator bulb and loop blinking away to the CW. Tomorrow I will draw out the circuit so I have it on hand. I am adding a cap circuit to rubber the crystal. I tried a...

50L6 transmitter revisited. I have been working on my 50L6 transmitter. It appears to be a decent working unit. As I said I changed some of the grounds slightly and got the hum down to acceptable levels. (goes "beep" in stead of BEZEZEZEZEZP)Today I moved the crystal and some of the wiring away...

Alexanderson alternator Data "; Check this out! I am too late. The last Rf alternator radio station went off the air in Sweden , are you ready? in 1996. Don VE3LYX Decided to do a "RF alternator" search

I promise. This might work on LF . I was also thinking since I have a scope with inductive or capacitive pickup capabilty I can get some patterns. I have also an old tig welder maybe 40 years old that is if I understand correctly actually a spark gap Hf unit. HF in welding being a relative...

Well it is fun no matter what. I have two QRP rigs too . One an 80M colourburst crystal control with a 50L6. I have it on a quickie wire antenna but I dont think it is much good as an antenna. The other is a 40 M battery powered Tx, a TNT design. I havent had it on air since I haven't a 40 M...

YEs CK that is what I was thinking. I dont think it would be dirty. I believe a spark is because it is unpredicable as to the exact moment. An Alternator isnt unpredicable. All our north american ac clocks for instance are synched in the power grid. if you use a Euro Ac clock here aside from the...

JA OK Das ist richtig, but when I was there they were selling the T shirts for tourists from a certain area of the world and that is what it said on them. I didnt buy one but now sitting at home I wish I had bought a dozen. I had though never worked Austria in all my years as a ham. 40 I believe...

spark transmitter ? I said "alternator" not spark. Spark is hopelssy dirty but an alternator produces an sinewave signal. Some electronic distributors also actually produce AC in the primary circuit. (In the distributor inself before it goes to the ign module and ign coil. Car alternators also...

So I was thinking. You see I live in two worlds. Ham Radio and Drag Racing. I was thinking about early spark transmitters and why they were so dirty. Tig welders are too as they use the same technology or did 20 years ago. I was thinking about mechanical/electrical signal generation and the...

further The vertical is doing a great job for me. I have worked Deutschland several times and even had a 5x9 report. Also worked a VP5 who was doing a demo on the use of Ham radio for their Telecommunicatios dept. I was just sitting there lstening to the band noise when I heard the call. Today...