In my article, “Teaching Electronics to Hams Using the ARRL ‘Big Project’ Activity Board" [March 2005, p 93], the call sign for Ron Chase should be KD4XA. Clarification: The curriculum plan (syllabus) for the club’s teaching-hams version is available by sending an e-mail note to w4bru@arrl.net. The place to find the curriculum for the “Big Project” school student version is given correctly in the article.—Bruce MacAlister, W4BRU

Clarification: “QRV from Mount Kilimanjaro” [April 2005, pp 47-50] first appeared in the German publication FUNKAMATEUR.

“FCC Affirms Fine for Unlicensed Operation on Amateur Frequency” [Apr 2005, p 70], should have credited the Official Observers of Southern New Jersey with first discovering and tracking and then lodging complaints with the FCC in this enforcement action. The Southern New Jersey OOs also followed up with the FCC until the complaints were resolved.—James E. Trotta, K2PSC, Official Observer Coordinator, SNJ

In the March “Hands-On Radio” column, the lower of the two MOSFETs in Figure 3 on page 50 is a P-channel device, not N-channel.—H. Ward Silver, NØAX

In the April 2005 installment of “Getting to Know Your Radio,” the SSB bandwidth shown in Figures 1A and 2A on page 56 should have been in Hz, not kHz.—Bill Edelman, KV2E