Yes, Cecil we ARE supposed to know about impedance, inductance, capacitance, etc., regardless of whether it is on test. Many hams have careers in electronics, but I had a career in another field, and
I typically place a 1:1 choke transformer at the feed point of my dipole or vertical ground plane, and run coax to a remote relay switch out in the yard, with a single coax to the shack. Am I placing
Jim Brown also has a nice exegesis on the use of toroids which will keep you busy for a while: http://www.audiosystemsgroup.com/RFI-Ham.pdf -- K8JHR -- Steve (G3TXQ) has a nice chart showing impedanc
However, I have seen books like the old ARRL Handbooks start right in with wave theory of the E and H field, and never really say what is the process of radiation, other than it happens from an ante
On this description, my old wire wound guitar strings should prove worthy when constructing a short, high band antenna... Hhmmm... -- K8JHR -- _______________________________________________________
Should I worry about the 55 feet of LMR400 that is buried in my back yard and feeds my vertical... or is it sufficiently stable in the ground to avoid galvanic corrosion? -- K8JHR -- http://www.mail-
Yes... but it has been out there for a few years already, so it amounts to a fait accompli ! I wonder how long before I will need to replace it. Any coax candidate for your use should state on its da
Oh, my, yes... a local radio engineer calls it "icky pick" and it is an appropriate name for it. Nasty, sticky stuff. -- JHR -- has a water shielding goop impregnating the shield. If the jacket gets
Greetings TenTec Mavens - I "accidentally" purchased a green screen Jupiter on eBay (from a local guy, in my town) and will pick it up this evening. It was selling kinda low, so I put a bid on it, ju
Boy... can say that again... oh.. looks like you DID ! But seriously... thanks Al and Lee for your take on it. == K8JHR == In my earlier post on this subject, toward ... _____________________________
OK... after cleaning the cabinet and re-seating all the pins and cables inside the rig just for good measure, the Jupiter I purchased has two problems. 1) There is no transmit signal out. Mode is CW,
Good news. 1) I was able to install Firmware ver. 1.29 and the radio functions again. I must have selected an inappropriate firmware version for this particular example. 2) Transmit output is restore
OK... here is the deal: I do a master reset of my green screen Jupiter. I plug a straight into the front panel key jack I change bands and modes to 10 m CW or may be 15m CW. I connect the antenna out
Further to my previous post... On 20M CW I get only 65 watts out when it is set between 80 and 100 watts, but if I lower to around 75 watts, I get 84 watts out! As I reduce the power setting below 75
We camp at the Douglas Dam Headway campground just North of Sevierville and usually have a camp site right on the water overlooking the dam - which looks cool lighted up at night. Where do you go Bob
Wow... I think this is a fascinating development. This is a wildly new direction for TT and I think it puts them in the lead in using this popular technology. Makes no never mind to me as I don't wan
Geeze... I can just feel the excitement. Now I gotta tease you a bit, JH... just poking fun, but when you say, "it is only limited by imagination... using the chipKIT UNO32 (a 32 bit microprocessor w
I did not think it was ever going to be a full bore panadapter - JUST A continuously updating spectrum scope like we have now. I think of a panadapter as something more, with waterfall display, etc.
Was there going to be a panadapter or spectrum scope for the Eagle? Or are you waiting for some other feature for it? == K8JHR == _______________________________________________ . ___________________
I added four old fashioned serial ports to my computer - for $14 - the price of a single four-port PCIexpress add-in card. No regrets. No problems making USB-Serial ports work. The computer sees four