The item about VU2RBI in the May 2010 issue [“This Just In,” p 13] erroneously states that the National Institute of Amateur Radio is the IARU member society for India. The IARU member society is actually the Amateur Radio Society of India (ARSI), www.arsi.info/. QST regrets the error.

In “Compact Stealth Five Band Inverted L Antenna” [Mar 2009, pp 34-36], we should have pointed out the RF safety risks, especially to people on the patio directly above the antenna. A thorough RF safety evaluation should be conducted and power reduced accordingly.

In “Building a 1929 Vacuum Tube Transmitter” [Apr 2010, pp 37-40], in Figure 2, the upper end of the “TNT Coil” is correctly shown going to one contact of the XTAL switch. It should also be connected to the vacant contact just above.

In “The Real World Meets Your Real Antenna” [Apr 2010, pp 47-48], the data in Table 4 was erroneously inserted twice.

◊ In “Build Your Own DSP Speaker” [Nov 2011, pp 31-34] in Figure 1, the anode of D4 should connect to J5-3 instead of J5-1. In addition, there have been some problems with obsolete parts, especially the audio amplifier IC. The author has addressed all that he is aware of on his website at www.kg4jjh.com/dspspeaker.html.

◊ In “A Four Tone SSB Generator” [Nov 2011, pp 38-41] in Figure 2 and its caption, S2 should be identified as S3.