Drag Racing 1/4 Mile times 0-60 Dyno Fast Cars Muscle Cars

68 Group K4OSK KN8I 7.268mhz 40 meters

68 Group on 7.268MHz 1/17/12 listening to the net with a Flex 5000a radio and an Inverted V dipole @ 40' on tower. This is right before the Shortwave Jinglebells start at 3:57pm CT. Chris is one of the 68 group SCOs. This net is Tuesday so Larry KN8I is the net SCO today. Note where the filters are set for people throwing carriers.


 


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Flex 5000 Filters
This is a demonstration of the FLex 5000 filters. I am on 40M with the pre-amp on. I am using a crystal controlled signal generator which has the best spectral purity, but its best output is S9. I tried an Elecraft transmitter which could generate a higher signal strength but had far worse spectral purity so I opted for this. The band width starts at 400hz on CW dropping to 13hz. I re-tune the radio so at each succeeding decrease in band width I am back at S9 and drop the bandwidth. I think this is a better demonstration than constantly retuning since the equations that determine the filters are all the same equations as opposed to discrete crystal filters, so the characteristic of each filter is the same, only the bandwidth is different. MDS with the pre-amp active on 40M is on the order of -150dBm. As you can see the performance of the filters is phenomenal and with NO ringing. You can also hear how quiet the receiver is in this demonstration. I will do a video on the AGC at some point to show why this is such a quiet receiver. The lack of fatigue when listening to this radio is the best of any radio I have ever owned Because of the AGC and the quietness you can really spend hours and hours listening with virtually no fatigue. Hope you enjoyed this one as I think its one of the best aspects of the radio





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