Congrats Eddy, I would like to see pictures of your project. I have been following your posts with interest. I hope to build a reciever for my next project.
I've not ever attempted a rx project before so still gathering info and looking for the simple design to start. Any comments on the 2 tube superhet described in QST for November? Its not a 1929 rig but may kindle the building interest again. Mike W0FD -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Eddy Swynar Sent: Wednesday, November 12, 2003 9:56 AM To: [email protected]; [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED] Subject: [AMRadio] EUREKA!!! It WORKS!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Hi All, Well, I am VERY happy to say that my homebrewed 12-tube 1929 superheterodyne receiver project IS WORKING!!!!!! I gave it the "maiden run" test voyage this morning---some problems ('natch!): an open plate choke, a bad solder connection on a bypass cap, and not enough (and later too much!) coupling between the local oscillator & the detector...the usual little stuff. I still have to determine how many turns of the local oscillator coil I'll have to short out in order to make it tune the 80-meter band (right now it tunes from about 3.3 to 3.490-MHz---but I was wise enough from the get-go to employ more coil stock turns than needed, "...just in case". It's always easier to SHORT turns, rather than to try & ADD them later on, after the fact!). It purrs along every bit as loud as my FT-980 along side it (the rice rocket is relegated to the role of digital frequency meter for these particular tests). Signals definitely peak right up with the two pre-selector capacitors (yup, it's a knob twiddler's delight!), & the old British vernier dial assembly is as smooth as silk---BETTER than anything encountered from either National, or Millen, surprisingly enough... Surprised, too, by the absence of hum, & IF feedback in the thing---either I'm really lucky, or I've managed to learn a trick or two in these matters after homebrewing for some 32 years now. :>) The whole package LOOKS real sexy, too---with any luck, I may be able to borrow a digital camera this weekend...if anyone cares to, I'd be more than pleased to e-mail shots of my latest "pride & joy" here to them. Just ask! Now, according to Murphy's law, the darn thing should blow up between now & the first request for a shot...Hmmmmm. ~73!~ Eddy VE3CUI - VE3XZ _______________________________________________ AMRadio mailing list [email protected] http://mailman.qth.net/mailman/listinfo/amradio
