|Joined:||Tue, Jun 5th 2007, 14:11||Roles:||N/A||Moderates:||N/A|
|Strange RFI on 10 meters and 6 meters||Jun 19th, 17:12||2||325||on 19/6/14|
|Two important functions missing in new radios ?||Feb 4th 2013, 15:16||5||940||on 28/2/13|
|Multimeter Calibration in Atlanta||KK4ZWM||on 17/11/14|
|Note that the left-most digit in the display can only be "1". Referring to the operation manual, you will see that the maximum display for the 20 volt range is 19.99. The lab is probably referring to the 20 volt range. This approach was very common with older gear.|
|Strange RFI on 10 meters and 6 meters||AB3FN||on 19/6/14|
|I've recently started hearing noise at approximately 57.3 KHz intervals. The noise is strongest on 6 meters, slightly weaker on 10 meters, and continues to weaken all the way down to 40 meters. This seems "backwards" to other RFI situations. I plan to swap power supplies, use ferrite cores on various lines, etc., but would welcome any thoughts. Thanks.|
|Two important functions missing in new radios ?||AB3FN||on 4/2/13|
|Maybe I'm missing the boat here, but I'd like to understand why our radios don't use signals from GPS or WWV. Lots of low cost consumer electronics does.
Instead of a TCXO, for example, a radio's frequency reference could be derived from GPS or WWV. If those signals were unavailable, then the radio would use its internal reference.
Similarly, why don't our radios include a clock, which would also derive the time from GPS or WWV ? And again, if those signals were not available, then the clock would revert to its own internal crystal.
Seems to me that both features would be easy and cheap to incorporate. Are there technical issues that I'm just not seeing ?
Thanks in advance for your thoughts and for educating me.
73 - Allan, AB3FN