Here are the charts from Ask Dave 378 about updating the firmware on the Icom IC-7300. The charts can be found (PDF) by clicking here.
Here’s the video:
Here are the charts from Ask Dave 378 about updating the firmware on the Icom IC-7300. The charts can be found (PDF) by clicking here.
Here’s the video:
Per request from KEØKRO, here is the chart showing the derivation of the formula that the length in feet of a dipole is 468 divided by the frequency in Megahertz.
Also, you can go here for a higher resolution PDF for printing the entire presentation.
This appears in the video “Frequency, Wavelength, and the Speed of Light (Ask Dave 358)”.
Still recovering from bad episode of gastroinstestinal bleeding. Very anemic at the moment, on oxygen, at home, but trying to walk more than 10 feet leaves me exhausted and completely out of breath. Had 3 units of blood last week. Will try every week to do livestream on Thursday evening, US time, 7pm Mountain standard time. 73, Dave, KEØOG
My article on exploring radio mathematics was just published in the November issue of QST. Unfortunately errors crept in, which has generated lots of emails. I put together a page on my website that collects and collates the errors. Check it out here.
Here’s the drawing that goes with Ask Dave 302. Click here to get the pdf.
The Amateur Extra training videos have been updated to the 12th Edition of the ARRL Extra Class License Manual for Ham Radio, and are once again available for purchase. Please note these are the same videos that are on YouTube, which you can watch for free. The videos-on-a-thumb-drive are offered as a convenience for those whose network connections aren’t good, or want to study away from where they can get Internet access. These video sticks are also handy for those who might want to use them for club presentations or a club-sponsored class.
You can order the thumb drive with the Amateur Extra videos by going to this order page or by clicking on the PayPal button below.
US$49.99 Postpaid US only. Colorado residents add sales tax.
Non-US please contact me regarding shipping charges. Please see the order page for conditions.
PLEASE NOTE: Although my videos are free for viewing, they are all released under the standard YouTube license, which forbids copying. If you need an extra video stick, please order one.
Brad Rich provides this link for those wishing to learn more about DSTAR. Note it not only has lots of good info, but lists other links as well. Here is the link; you can just click on it to go there: www.dstarinfo.com.
Male end of elbow connector, photo by AC3EK, used by permission
In Ask Dave 265 and Ask Dave 266, I mentioned an Addendum to the MFJ instructions. This addendum describes that the antenna comes pretuned too long and will need to be shortened, and gives instructions for doing so. See the addendum by clicking here.
I’ve put up a page that takes you to the Reference Station list of equipment. It’s at www.dcasler.com/reference. Check it out. Comments should go to the video that introduces the reference station component.