
Our popular audio filter is in stock! Please visit the NEQRP Club Store to place your order.
Congratulations, Bob N4BP, top scorer in the 2009 running of QRP Afield!
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
The NEQRP website will be down for maintenance sometime this weekend. It may be inaccessible for several hours while we upgrade the site. Thank you for your patience.
UPDATE 2010-06-27: After nearly 4 years without an upgrade, the site is again up to date. This is an important step into the present. Among the improvements:
Due to overwhelming demand, we have again sold out of our current stock of NEScaf filters. Parts are on order for another round. Some items are backordered at our supplier, but we hope to be able to accept orders again within 2-3 weeks time (mid-June timeframe).
Check back later for updates, and thanks for the continued interest in this kit.
-Bruce N1RX
Hi folks,
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.
Thank You for Your time,
73 - Petr, OK1RP
The NEQRP kitting crew met in Westford, MA last night and prepared another round of the club's Switched Capacitor Audio Filter kit, the NEScaf. Kits are once again available for ordering from the NEQRP Club Store.
Thanks to all the kitting volunteers, and all the users of this kit for the continued interest, and patience while we prepared another round.
I’m posting something similar on several other Yahoo groups, but I promise, I’ll only post it here this once: