Doug Herigstad
















My entry this year is three previously built projects. Together they form a double tuned regenerative loop with an inductive wave trap. The antenna tuner is a Tuggle tuned 165/46 litz spider coil with separate 10-400pf capacitors,each with 6:1 reduction drives. The trap is actually the detector coil of my crystal set and acts as an additional tuning stage for the loop. The loop is 18" and uses a 3Q5 pentode with screen voltage adjustment for regen. The tickler is 2 turns spaced 3/4" behind the loop. I spaced the antenna tuner 22" from the loop and the trap 7" closer. That seems to work best.

Since I hate wearing phones, I use a 2 tube amplified speaker that was a donor parts radio. I wired the audio section back in and use a 10K:1M microphone transformer as an isolated input.



Log

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 2008 Contest Log for Doug Herigstad

 

    Date     Time     Freq     Station

 1   7/29/08  0200     740      CHWO

 2            0522     750      WSB

 3            1900     570      WTNT

 4            1905     1260     WWRC

 5            1910     1340     WYCB

 6            1915     1580     WPGC

 7            2000     1160     WMET

 8            2020     630      WMAL

 

 9   7/30/08  0846     1390     WZHF

10            2200     980      WTEM

11            2215     730      WXTR

12            2220     760      WJR

13            2225     770      WABC

 

14  8/1/08    0220     660      WFAN

15            0230     680      WCNN

16            0235     710      WOR

17            0535     900      CHML

18            0946     680      WCBM

19            1410     900      WILC

20            1711     820      WTOP

21            1715     810      WYRE

22            1720     780      WAVA

23            1730     750      WBMD

24            2200     1050     WFED

 

25  8/2/08    0100     1000     WMVP

26            0120     1010     WINS

27            0140     1080     WTIC

28            0155     1100     WTAM

29            0200     880      WCBS

30            0215     890      WLS

31            0251     700      WLW

32            0830     1450     WOL

33            0838     1430     WNAV

34            0842     700      WDMV

35            0846     1400     WWIN

36            0856     1250     WPRZ

37            0900     1090     WBAL

38            0912     1030     WWGB

39            0920     810      WGY

40            1100     1310     WDCT

41            1115     1220     WFAX

42            1130     1120     WUST

43            1145     1190     WBIS

44            1522     1370     WVIE

45            1550     1500     WTWP

 

46  8/3/08    0200     650      WSM

47            0215     720      WGN

48            0230     800      CKLW

49            0235     830      WEEU

50            0241     840      WHAS

51            0300     940      CINW

52            1515     1280     WHVR

53            1520     1300     WJFK

54            1540     1460     WKDV

 

55  8/4/08    0200     1060     KYW

56            0222     1070     CBA

57            0300     960      WTGM

58            0330     1020     KDKA

59            0355     920      CJCH

60            0545     550      WSVA

61            0616     1110     WBT

62            0631     1150     WDEL

63            0705     1170     WWVA

 

64  8/6/08    0105     780      WBBM

65            0126     1130     WBBR

66            0203     1140     WRVA

67            0218     1180     WHAM

68            0400     860      WBGR

69            0630     1210     WPHT

70            1946     950      WCTN

71            2010     930      WFMD

 

72  8/7/08    0200     790      CIGM

73            0215     690      WOKV

74            0229     670      WSCR

75            0245     850      WXJC

76            0254     1040     WHO

77            0305     1290     WDZY

78            0310     1320     WJAS

 

79  8/9/08    0206     530      WPQE998

80            0410     1620     WPMU747

81            0433     1700     WQBY206

82            0543     1690     WPTX

83            1210     540      WGOP

84            1242     1520     WTRI

85            1335     800      WCHA