Re: [Elecraft] Fake FTDI chips
>> The only way I know to use a genuine RS-232 port is to use a desk top >> computer with a plug in board. I would also like to use a lap-top >> computer and as far as I know RS-232 ports are not available. If >> anyone knows differently, please let us in on the info. > They are available using a device variously called a "Port Converter" or "Docking Station". > In addition, there is a genuine serial port on a slightly older Dell > laptop that we use for our hospital's packet circuits. It's doable. I use the "E-Legacy Extender" to add a real serial I/O port to current model Dell Latitude E-series laptops. I also have a Dell Latitude E6420 XFR ruggedized laptop with built-in serial port, but it surprisingly is implemented using a built-in USB-serial converter, as opposed to a "real" I/O port. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] OT Ethernet/RS-232
> -Original Message- > From: Bill Frantz > > ...I don't think there are any new laptop computers with RS223 ports. > Are there any desktops/towers? ... The most recent shipment of Dell Optiplex (business desktops) I bought have serial ports. Dell Latitude notebooks have an available snap-on legacy port adaptor that includes a real (non-USB) serial port, same as do the docking stations. My ruggedized Latitude E6420 XFR has a standard serial port, but it seems to be an internal USB-serial port adapter. A lot of network equipment still has serial console ports, so laptops marketed toward network techs tend to have available serial ports. In my experience USB to serial adapters are generally inferior to traditional serial ports. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Question about suspending a delta loop...
I'm not what you'd call sage, but I have an 80m horizontal loop and don't bother with suspended weights. I figure there is enough stretch in my support ropes to handle any normal winds, and a major storm is probably going to break some tree limbs anyway. So much can happen to tree-supported antennas in big storms that spending too much effort on a support system just doesn't appeal to me. I'd rather prepare for a quick replacement should the need arise. My support ropes run from the corner insulators over the tree tops and down to points near the ground where I tie them off. I do NOT climb trees, so I don't have the option of tying them off higher up. (I use a bow and arrow to launch fishing line over a high limb, then use it to pull nylon twine over, and then use it to pull my support rope over. Quick and easy.) I don't have a problem with vandalism where I live, and the antenna stays up for a long time. Chuck N4XS __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Ground Rods
> -Original Message- > From: Gary Gregory > Subject: [Elecraft] Ground Rods > > ...Is there any advantage in having the Copper ground rod > surrounded by concrete over having the rod driven 6 feet > straight into the earth? ... In my limited experience, lightning + ground rod in concrete = BOMB. Of course, lightning can turn just about anything into a bomb. Chuck N4XS __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] static buildup on antennas
> -Original Message- > From: valvetb...@netzero.com > Subject: Re: [Elecraft] static buildup on antennas > > Gary, > My antenna tuner has a 4:1 current balun built in. The DC resistance across > the ladder line is near zero ohms. I would think that would bleed off any charge. > 73, > Art WB8ENE Any balun that has a DC path between the center conductor and shield will take care of the static buildup problem. Balun designs vary, but all the 4:1 current baluns I have do have that DC path. If you aren't sure what's inside a balun, you can make a quick check with an ohmmeter. A reading of near zero ohms between the center conductor and the shell tells you that the DC path is there. Chuck N4XS __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Antenna static charge precautions - any tips?
> -Original Message- > From: zen...@netspace.net.au > Subject: [Elecraft] Antenna static charge precautions - any tips? > > ...I've just re-hung my 80m horizontal loop. With so much wire in the > air, I'm reviewing my static charge risks and how to reduce them... It looks to me like a loop antenna would not need a resistor to bleed static charge. The center conductor is already connected to the shield by the antenna wire itself. Am I missing something? __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
