++++++++++++++++++ Date: Sun, 18 Nov 2001 13:44:05 -0700 From: "James R. Duffey" To: Subject: [112089] Tuna -Tin 2 Fun Message-ID: Mime-version: 1.0 Content-type: text/plain; charset="US-ASCII" Content-transfer-encoding: 7bit If you have been reading the recent posts about all the fun that people are having with their Tuna-Tin 2s and are wondering how you can join in, wonder no longer! The Tuna Tin 2 kit is available from the Ft.Smith QRP group for $12 including shipping. See: http://www.fix.net/~jparker/norcal/bttfut/bttfut.htm No "l" this time. The Tuna Tin 2 is one of those timeless pieces of gear. Designed and built by Doug DeMaw, W1FB and described in the May 1976 QST, it has all the parts necessary to function, but no more. A tuna fish can serves as the case. In an emergency catfood, pineapple, or smoked almond cans can be substituted. The Tuna Tin 2 was updated by Dave Meacham, W6EMD, at Doug's, KI6DS, urging a few years back. They did a great job updating it with modern components and now it works better than the original. It will attract comments from whomever you show it to, ham or not. It is a good way to learn about oscillators and amplifiers. The 2 in the name stands for 2 transistors. The first is used as a crystal oscillator and the second as a power amplifier. The manual and web page contain explanations of what all the parts do, so it is an ideal kit to learn why rigs have those 0.1 uF caps everywhere. Finger tip T/R switching is provided, so all you need to get on the air is a receiver. The receiver portion of any HF transceiver will do. So send your $12 ($15 US for DX) to: Jay Bromley W5JAY 9505 Bryn Mawr Circle Fort Smith, AR 72908-9276 If you can corner Jay at a Hamfest he will sell you one for $10 as he doesn't have to pay the shipping. Buy him a diet Dr. Pepper for providing this service. Now Jay will ship 10 or more of these kits to one address for $10 a piece. They go together in an hour or two, are easy to trouble shoot, and make a good group building project. These also make great gifts, door prizes, awards, and incentive rewards for upgrading. Help Santa put one of these in your favorite ham's stocking. It might be the ideal way to thank that Elmer that got you started in Ham Radio or building. I guess that I am sounding like a bit like a shill for the Ft.Smith QRP group these days, but they do offer two simple ways to get into QRP building. Buy both. And they fund Arkiecon with the proceeds. See you at Arkiecon in April. - Dr. Megacycle KK6MC/5 "Radio Green Chile" -- James R. Duffey KK6MC/5 30 Casa Loma Road Cedar Crest, NM 87008 +++++++++++++++++ Date: Sun, 18 Nov 2001 15:31:31 -0700 From: "James R. Duffey" To: , qrp-l Subject: [112109] Re: Tuna -Tin 2 Fun Message-ID: Mime-version: 1.0 Content-type: text/plain; charset="US-ASCII" Content-transfer-encoding: 7bit Steve - Shifting the Tuna Tin 2 to other bands is not too hard. I know several 80 M versions have been made. I do believe that modifications for the 20 M band are also around on the web. Does anybody know where? The oscillator ciruit is a nonresonant, so that section should work just by plugging in a crystal. The output low pass filter should be changed, but that is straight forward. Use one of Doug DeMaw's designs in his notebooks, or (preferrably) design one that is correct for the application. There are several programs around that you can use to design the filter. I use L. I think that the 49er, TT-2, SMK-1 and other rock bound rig contest was a one time thing. But since the Tuna Tin 2 is an ideal match to a straight key, maybe we should run an adjunct contest to straight key night. How about "Rock around the clock" for those rock bound rigs? Canned green chile is an abomination once you have smelled fresh green chiles roasting. But maybe I could make the sacrifice for the sake of a "Green Chile Radio". - Dr. Megacycle KK6MC/5 "Radio Green Chile" -- James R. Duffey KK6MC/5 30 Casa Loma Road Cedar Crest, NM 87008 +++++++++++++++++++ Date: Thu, 22 Nov 2001 20:08:55 -0500 From: "John L. \"Jake\" Carter" To: , "Low Power Amateur Radio Discussion" Subject: [112539] RE: Tiny TT2 (switched cap VXO) Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset="Windows-1252" Content-Transfer-Encoding: 7bit Steve -- N0TU: If you want something quick, you might try rigging up a couple DPDT (center off) switches and some NP0 caps -- see http://sites.netscape.net/jakeycarter/ttvxo 73, Jake -- N4UY -----Original Message----- From: owner-qrp-l at Lehigh.EDU [mailto:owner-qrp-l at Lehigh.EDU]On Behalf Of Steve/n0tu Sent: Thursday, November 22, 2001 1:35 PM To: Low Power Amateur Radio Discussion Subject: Tiny TT2 Now almost ready for the Holiday Milliwatt Test! But still think it needs a slider if I gonna be competitive don't ya think? What FUN! WooHoo... see ya in the noise with those mighty mWs ...Steve/n0tu +++++++++++++++