The New England QRP Club invites you to check in to our weekly net, join us at one of our gatherings, build a NEScaf or 79er, work WQ1RP, participate at NewEnglandQRP.org, or simply enjoy your QRP with our 73.
Wonder if anyone else has come across this. I just finished assy of my new NEScaf and all works gangbusters with my regen. Only problem is I'm getting RF into the receiver from what I can only think is harmonics from the clock. Other than putting it in a metal case, does anyone have other ideas to solve this ? I'm using a 9V battery as B+ so it's definitely not mains borne. Thanks, Paul zs2oe
as the preview MF100 chip used in the nice NESCAF filter kit is discontinued already (DIP package) the new chip has been found for this concept as the replacement.
Did You compare the results of the NESCAF filter using the old MF100 and new LTC1060 replacement please? I am interesting the differences and results... do not hesitate to share Your opinion and experiences over there.
The pictures I took at NEQRP Meeting at Kilarney’s Pub April 10, 2010 are available on my QRP site. You can go to the contents page at http://www.n1rxv.com/neqrp/Contents.html or directly to the pictures at http://www.n1rxv.com/neqrp/neqrp1004_w/Page.html.
I had a great time and I hope that all who attended also had a great time.
It's past time for an update on the New England QRP Club's NEScaf kit.
To date, NEQRP has sold over 800 of these. We have been out of stock for some time as the SCAF chip we were using, National's LMF100, was discontinued in DIP format. We made a preliminary decision to redesign the board to accept the SMT version of the chip.
During that process, one of the club's members pointed us to Linear Technology's LTC1060. It is a drop-in replacement for the LMF100. I obtained some samples, and have tried it in my NEScaf. It appears to offer performance comparable to the LMF100. Please don't ask me for hard numbers- I haven't done THAT kind of analysis. To my ears, it sounds comparable.
After 15 years as I Tech Plus, I am finally going get off of the chair and take my General Class Test. This maybe my last solar cycle. If I pass the test I am going to reward myself by buying and building a QRP xcvr or xmitter/rcvr combo. If I don't take pass the test, I will study some more and take it the following week. My concern is that, like a Yankee, I don't want to spend a lot of money on a high end kit and I don't want to waste my money on something that won't work. I'm looking at something from QRPME, a Ramsey or Vectronics kit.
Any advice will be greatly appreciated.
Tnks es 73