Re: Topband: Beverage selector switch via IP
Hello , I use this : http://foxdelta.com/products/remote-usb-switch.htm VY 73 Pat ON7PQ . -Oorspronkelijk bericht- Van: Topband [mailto:topband-boun...@contesting.com] Namens Mike Waters Verzonden: dinsdag 10 juli 2018 1:35 Aan: WW3S CC: TopBand List; Herbert Schoenbohm Onderwerp: Re: Topband: Beverage selector switch via IP Yes. That's what the late and great Milt Jensen and his club used. 73, Mike www.w0btu.com On Mon, Jul 9, 2018 at 6:27 PM, WW3S wrote: > I think Green Heron has them > > Sent from my iPad > > > On Jul 9, 2018, at 7:22 PM, Herbert Schoenbohm < > herbert.schoenb...@gmail.com> wrote: > > > > Looked all over for one of these so my Beverages could be selected > remotely > > via an IP address. Is there such a device marketed anywhere? > > > > Herb, KV4FZ > > _ > > Topband Reflector Archives - http://www.contesting.com/_topband > > _ > Topband Reflector Archives - http://www.contesting.com/_topband > _ Topband Reflector Archives - http://www.contesting.com/_topband _ Topband Reflector Archives - http://www.contesting.com/_topband
Re: Topband: Beverage selector switch via IP
Hi Herb, A simple microcontroller equipped with an ethernet phy (such as RasperryPI) is what I use. It needs a bit of coding, but Python is pretty simple for that. 73, Greg, ZL3IX On 2018-07-10 11:22 a.m., Herbert Schoenbohm wrote: Looked all over for one of these so my Beverages could be selected remotely via an IP address. Is there such a device marketed anywhere? Herb, KV4FZ _ Topband Reflector Archives - http://www.contesting.com/_topband _ Topband Reflector Archives - http://www.contesting.com/_topband
Re: Topband: Beverage selector switch via IP
Sorry I forgot to add. You will need control software and IP switch. Drop him e-mail for full package. MM Sent from my iPad > On 10 Jul 2018, at 01:22, Herbert Schoenbohm > wrote: > > Looked all over for one of these so my Beverages could be selected remotely > via an IP address. Is there such a device marketed anywhere? > > Herb, KV4FZ > _ > Topband Reflector Archives - http://www.contesting.com/_topband _ Topband Reflector Archives - http://www.contesting.com/_topband
Re: Topband: Beverage selector switch via IP
I am using one from RA6LBS. He has very nice push button BV selector. http://lowbandsystems.com/product/sontroller-lbc8ard Or you can try simple version. Good luck! EY8MM/DL Sent from my iPad > On 10 Jul 2018, at 01:22, Herbert Schoenbohm > wrote: > > Looked all over for one of these so my Beverages could be selected remotely > via an IP address. Is there such a device marketed anywhere? > > Herb, KV4FZ > _ > Topband Reflector Archives - http://www.contesting.com/_topband _ Topband Reflector Archives - http://www.contesting.com/_topband
Re: Topband: Beverage selector switch via IP
Yes. That's what the late and great Milt Jensen and his club used. 73, Mike www.w0btu.com On Mon, Jul 9, 2018 at 6:27 PM, WW3S wrote: > I think Green Heron has them > > Sent from my iPad > > > On Jul 9, 2018, at 7:22 PM, Herbert Schoenbohm < > herbert.schoenb...@gmail.com> wrote: > > > > Looked all over for one of these so my Beverages could be selected > remotely > > via an IP address. Is there such a device marketed anywhere? > > > > Herb, KV4FZ > > _ > > Topband Reflector Archives - http://www.contesting.com/_topband > > _ > Topband Reflector Archives - http://www.contesting.com/_topband > _ Topband Reflector Archives - http://www.contesting.com/_topband
Re: Topband: Beverage selector switch via IP
I think Green Heron has them Sent from my iPad > On Jul 9, 2018, at 7:22 PM, Herbert Schoenbohm > wrote: > > Looked all over for one of these so my Beverages could be selected remotely > via an IP address. Is there such a device marketed anywhere? > > Herb, KV4FZ > _ > Topband Reflector Archives - http://www.contesting.com/_topband _ Topband Reflector Archives - http://www.contesting.com/_topband
Topband: Beverage selector switch via IP
Looked all over for one of these so my Beverages could be selected remotely via an IP address. Is there such a device marketed anywhere? Herb, KV4FZ _ Topband Reflector Archives - http://www.contesting.com/_topband
Re: Topband: Rain noise
Also, if the elements etc. are insulated from the boom, the arcing could be across the insulator(s). 73, Mike www.w0btu.com On Mon, Jul 9, 2018 at 4:12 PM, Mike Waters wrote: > Hello David, > > You're not the first person to experience that! :-) > > The short answer is that there is likely an atmospheric voltage gradient, > causing a corona discharge (which is making the noise). A corona discharge > emanates from sharp corners or points; the voltage builds up until it can > discharge. If you can smooth or insulate those points, you can reduce or > eliminate the noise. > > It's possible that if you do that to the top antenna, the corona with then > appear on the lower one. > > You could try installing a mast with a grounded, microscopically-sharp > point at the top, extending above the top beam. One made from a thoriated > tungsten TIG welding electrode is about as good as it gets. (Forget that > brushing thing that looks like a chimney cleaner! IMO, the points of the > wires are both too close together and not sharp enough.) > > DISCLAIMER: I have not personally tried this, but I have knowledge and > experience in electron physics and corona discharge. > > Having said all the above, the noise-causing discharge instead could very > well be an arc, such as between the coax connector's inner conductor and > shield. > > 73, Mike > www.w0btu.com > > On Mon, Jul 9, 2018 at 5:19 AM, Rodman, David wrote: > >> First, I want to say this topic is not necessarily topband related, so if >> anyone wishes to comment about my question, please do so privately so as to >> cut down on band width. Thank you. >> >> >> Very smart people live on this list and I want to reach out to them about >> my system as they may know something about this too. When it rains, the >> top 20m antenna hears the precipitation and the bottom does not. Is there >> a way to silence this situation? More info on request. >> >> >> Again, thank you. >> >> >> --- >> David J Rodman MD >> Assistant Clinical Professor >> Department of Ophthalmology >> SUNY/Buffalo >> >> Office 716-857-8654 >> _ >> Topband Reflector Archives - http://www.contesting.com/_topband >> > > _ Topband Reflector Archives - http://www.contesting.com/_topband
Re: Topband: Rain noise
Hello David, You're not the first person to experience that! :-) The short answer is that there is likely an atmospheric voltage gradient, causing a corona discharge (which is making the noise). A corona discharge emanates from sharp corners or points; the voltage builds up until it can discharge. If you can smooth or insulate those points, you can reduce or eliminate the noise. It's possible that if you do that to the top antenna, the corona with then appear on the lower one. You could try installing a mast with a grounded, microscopically-sharp point at the top, extending above the top beam. One made from a thoriated tungsten TIG welding electrode is about as good as it gets. (Forget that brushing thing that looks like a chimney cleaner! IMO, the points of the wires are both too close together and not sharp enough.) DISCLAIMER: I have not personally tried this, but I have knowledge and experience in electron physics and corona discharge. Having said all the above, the noise-causing discharge instead could very well be an arc, such as between the coax connector's inner conductor and shield. 73, Mike www.w0btu.com On Mon, Jul 9, 2018 at 5:19 AM, Rodman, David wrote: > First, I want to say this topic is not necessarily topband related, so if > anyone wishes to comment about my question, please do so privately so as to > cut down on band width. Thank you. > > > Very smart people live on this list and I want to reach out to them about > my system as they may know something about this too. When it rains, the > top 20m antenna hears the precipitation and the bottom does not. Is there > a way to silence this situation? More info on request. > > > Again, thank you. > > > --- > David J Rodman MD > Assistant Clinical Professor > Department of Ophthalmology > SUNY/Buffalo > > Office 716-857-8654 > _ > Topband Reflector Archives - http://www.contesting.com/_topband > _ Topband Reflector Archives - http://www.contesting.com/_topband
Re: Topband: Rain noise
When it rains it does not always cause rain noise, but when it does, the solution is to listen on the lower antennas. (You can still transmit on the top antenna.) Chuck W5PR On Mon, Jul 9, 2018 at 5:19 AM, Rodman, David wrote: > First, I want to say this topic is not necessarily topband related, so if > anyone wishes to comment about my question, please do so privately so as to > cut down on band width. Thank you. > > > Very smart people live on this list and I want to reach out to them about > my system as they may know something about this too. When it rains, the > top 20m antenna hears the precipitation and the bottom does not. Is there > a way to silence this situation? More info on request. > > > Again, thank you. > > > --- > David J Rodman MD > Assistant Clinical Professor > Department of Ophthalmology > SUNY/Buffalo > > Office 716-857-8654 > _ > Topband Reflector Archives - http://www.contesting.com/_topband > _ Topband Reflector Archives - http://www.contesting.com/_topband
Topband: Rain noise
First, I want to say this topic is not necessarily topband related, so if anyone wishes to comment about my question, please do so privately so as to cut down on band width. Thank you. Very smart people live on this list and I want to reach out to them about my system as they may know something about this too. When it rains, the top 20m antenna hears the precipitation and the bottom does not. Is there a way to silence this situation? More info on request. Again, thank you. --- David J Rodman MD Assistant Clinical Professor Department of Ophthalmology SUNY/Buffalo Office 716-857-8654 _ Topband Reflector Archives - http://www.contesting.com/_topband
