|Joined:||Sat, Apr 4th 1998, 00:00||Roles:||N/A||Moderates:||N/A|
|Circuit Board Construction Question||Mar 23rd 2012, 13:10||4||1,984||on 15/9/13|
|10 Meter AM||Nov 14th 2011, 19:24||4||2,151||on 14/12/11|
|Baofeng UV-3R Harmonic Fix||Nov 11th 2011, 14:18||1||2,069||on 11/11/11|
|Novice Trivia Question: 10 meters||Oct 26th 2011, 18:55||2||1,624||on 1/11/11|
|European AM'er Needs Help||Aug 25th 2011, 19:45||3||1,562||on 23/11/11|
|How to Set the Temperature Setting On a Soldering Station||Aug 16th 2011, 12:18||1||2,129||on 16/8/11|
|How to Remove Cigarette Smoke from a Newer Solid State Transceiver?||Aug 8th 2011, 18:15||6||3,548||on 19/4/14|
|Switching Open Wire Feedline Bewtween a Transmitter and Receiver?||Aug 8th 2011, 13:34||1||2,205||on 8/8/11|
|Diplexer Isolation||WX1S||1 day, 11 hours ago|
|Our ARRL Laboratory limit for signal input is +10 dBm (10 mW). It is considered the highest "safe" signal input for test purposes.|
|Disband MAR section from all contests in favour of NS, NB, PEI||VE1AWP||1 day, 11 hours ago|
|Message forwarded to ARRL Staff.
|ARRL version of linux||WA6SAZ||2 days, 16 hours ago|
|Quick Stats suggestion has been passed along to the ARRL Editorial Department|
|ITU 2 phone below the band plan?||KC9UOQ||3 days, 14 hours ago|
|The US phone band is 7.125 to 7.300 MHz, period. However, other countries in ITU 2 are allowed to operate on lower frequencies than we can. Canadian Amateurs can do so, for example; they can be heard regularly on 7.060 to 7.090, or so. You cannot QSO with them using phone, unless the other station is operating "split" (listening somewhere in the US phone band). You could always call them using CW :)|
|Power Supply Causing Dirty CW Signal?||kg4msr||on 19/9/14|
Try using a faster scan rate on the scope. You may have much higher frequency noise riding on the DC voltage that the filter capacitor is not taking out all the way. Noise like this sometimes cannot be seen while viewing ripple.
It's possible that one of the solid state devices (diode or regulator) is generating this while under load.
You can always contact Astron and ask what they may think is causing it.