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February 2009 QST Feedback

In “Hands-On Radio” [Jan 2009, pp 76- 77], the value shown for return loss in all tables should be shown as a positive value. In addition, the correct values for Table 3 are as follows:

Table 3
PREFL/PFWD Versus SWR

SWR     Prefl/Pfwd      RL(dB)
1.01    0.00002 	-46.1
1.1     0.00227 	-26.4
1.2     0.00826 	-20.8
1.5     0.04000 	-14.0
2       0.11111 	-9.5
3       0.25000 	-6.0
5       0.44444 	-3.5
10      0.66942 	-1.7
100     0.96079		-0.2

For more on this, see the Hands-On Radio Web page at www.arrl.org/tis/info/HTML/Hands-On Radio/. Thanks to Ed Wetherhold, W3NQN, and Igor Kosvin, KB1QOV, for their comments.

In Figure 1 of “The Universal Keying Module” [Nov 2008, p 43], Q1 should be shown as a PNP transistor type 2N4403.

In the 2008 June VHF Contest Results [Dec 2008, p 84] a line of text was omitted that highlighted N6NB’s winning score in the Rover category. We apologize for the omission.

In the announcement for the 2009 ARRL DX Contest [Dec 2008, p 85] it is reported that US and Canadian stations exchange a signal report and their ARRL/RAC Section. In fact, US and Canadian stations exchange a signal report and their State or Province.



Page last modified: 09:57 AM, 02 Jan 2009 ET
Page author: qst@arrl.org
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