Dave Schmarder's 2009 Sprint Contest Entry

Sprint dx crystal set receiver

My location:   N 42 15 3    W 76 57 5, Beaver Dams, NY 14812


http://www.makearadio.com/crystal/76.php

Sprint Contest Entry

Crystal set schematic diagram

Font Decrease Font Increase



Comments

I wasn't sure if I was going to have this radio ready in time for the contest. I was late in ordering the toroids, then there was a delivery carrier delay in getting them to me. I had only one day to get the coils made, installed and the radio aligned. Fortunately I had the time to finish it.

You can get the details of my #76 radio by visiting the page.

I did well in the first day of the contest, considering the radio design and the time available to devote to the contest. This set tunes beautifully! One knob. No ATU, spacing the two sections of a DX crystal set either. Also, the scoring is simpler as the number of stations is lower with a non-dx radio. (This radio does hear far away, but it was not designed as a dx radio.)

I ended up with 73 stations logged. This is well above the goal that I set for myself in the beginning. There were some nice surprises in the form of some new stations heard. That is always a treat. The radio worked very well, even with it's lower sensitivity. The selectivity made up for this. Under 1500 kHz the selectivity was great and above somewhat moderate.

My thanks to Jack, KE4ID for sponsoring this contest at his crystalradio.us website. The contests provide me with a great measuring stick for checking my radios (and bragging about them on my website).

Dave

Entry
2009 Sprint Contest
Time= EST

##   Time    Stn    Freq
------10/9/2009---------
01   1130    WWLZ    820
02   1132    WHCU    870
03   1133    WYLF    850
04   1137    WLNL   1000
05   1141    WABH   1380
06   1142    WELM   1410
07   1143    WNYY   1470
08   1144    WRCE   1490
09   1146    WFLR   1570
10   1147    WEHH   1600
11   2009    WFAN    660
12   2016    CINF    690
13   2019     WOR    710
14   2034     WGY    810
15   2037    CHML    900
16   2043    WCBS    880
17   2045     KYW   1060
18   2048    WBAL   1090
19   2050    WTAM   1100
20   2158    WPHT   1210
------10/10/2009--------
21   0002     WJZ   1300
22   0017    WTWP   1500
23   0018    WQEW   1560
24   0021    WTTM   1680
25   0023    CHTO   1690
26   0029    CMEA    570
27   0036     WIP    610
28   0055    WMAL    630
29   0104    WSCR    670
30   0107     WGN    720
31   0108    CFZM    740
32   0116     WJR    760
33   0117    WABC    770
34   0118    WBBM    780
35   0120    CKLW    800
36   0124     WLS    890
37   0139    WLAT    910
38   0221    CKNX    920
39   1008    WATS    960
40   1902    CINW    940
41   1910    WTEM    980
42   1920    CHTX    990
43   1922    WINS   1010
44   1928    CFRB   1010
45   1930    KDKA   1020
46   1934     WBZ   1030
47   1947    WADO   1280
48   2049    WWKB   1520
49   2051    WLAC   1510
50   2101    WHKT   1650
51   2108    WPTX   1690
52   2328     WSM    650
53   2335     WLW    700
54   2337    CKAC    730
55   2342    WHAS    840
56   2345    WKGE    850
57   2347    CJBC    860
------10/11/2009--------
58   0018    WCTN    950
59   0027    WMVP   1000
60   0053    WEPN   1050
61   0055     WBT   1110
62   1913    WNST   1570
63   1932    WHWH   1350
64   2033    WWVA   1170
65   2036    WBBR   1130
66   2040    WRVA   1140
67   2100    WTIC   1080
68   2102    CMJD    960
69   2105    WEAV    960
70   2110    WPAT    930
71   2139    WIRD    920
72   2221     WSB    750
73   2253    WNSW   1430
				
	

View 2009 Sprint in a larger map