Discussion in 'Amateur Radio News' started by K9EID, Aug 8, 2017.
Bob, brings back a lot of memories. Now we need a regenerative receiver to go along with it!
I hope somebody advises builders that wood is not a good practice for enclosures or parts of enclosures. It becomes imperative when associated with high energy circuits. I won't necessary be concerned about tubes being hot as an ignition source but rather a fault generating heat and igniting the wood is more concerning. That's why you never see wood being used as an enclosure any more unless the high energy circuits are enclosed with a non-flammable sub-enclosure.
Having worked for Underwriters Laboratory (UL) I saw many examples of poor enclosure designs like this. Luckily there was a "policeman" before they were released to the public.
I know using surplus wood from our shops was an inexpensive way to build an enclosure-I did the same 50 years ago. We all have learned what could happen and it's what we should "Elmer" to the new people to our hobby. It's important as good circuit design.
My first transmitter was a crystal controlled valve lineup with plate modulation. I built it on a u shaped tinplate chassis. I'm still trying to recover it from the person I gave it to. Pineboard is a fantastic idea !!! 73 Simon ZL2FAE
Hello guys, what is this drawing program and can I get a copy.
I dont have enough pine for one of these...
So wil give yours a try. looks like fun.
This is an awesome project. Thanks for the innovation
Try here: http://www.hammondmfg.com/153.htm