Re: Topband: fixing beverage
Any antenna analyzer with variable frequency can be used as a TDR of sorts. Anything will work. The method is very simple. You simply observe how far apart in frequency the repeating gyrations in impedance are, and use standard 1/2 wave formulas to convert the difference frequency to distance. I can do this with a low power VFO and a diode detector or scope. It does not even have to be a bridge. :) 73 Tom _ Topband Reflector Archives - http://www.contesting.com/_topband
Re: Topband: fixing beverage
Jorge, I have used my AIM4170 many times as a TDR. Your 3 year old AIM_853.exe should work, but it is free & easy go upgrade to the latest (October 26, 2015) software revision, AIM_910B. Download AIM_910B here: WWW.w5big.com/prog_update.htm Bill N3RR On Nov 23, 2015 8:03 PM, donov...@starpower.net wrote: > > Hi Jorge, > > The AIM4170 has TDR capabilities. I don't own an AIM470, but > surely someone on the Topband reflector can help you use it > as a TDR. > > 73 > Frank > W3LPL > > - Original Message - > > From: "Jorge Diez - CX6VM" > To: donov...@starpower.net > Sent: Monday, November 23, 2015 11:56:32 PM > Subject: RE: Topband: fixing beverage > > Hi Frank > > I google and the first option was Campbellsci.es > > In 5 minutes the CX representative emailed me and told me that is a very very > expensive toy for my use :-) > > I have the AIM4170, will do this job? I use the software AIM_852.exe I need > another software or this is OK? > > Thanks, > Jorge > > -Mensaje original- > De: Topband [mailto:topband-boun...@contesting.com] En nombre de > donov...@starpower.net > Enviado el: lunes, 23 de noviembre de 2015 06:51 p.m. > Para: topband@contesting.com > CC: dl8yhrfr...@aol.com > Asunto: Re: Topband: fixing beverage > > Hi Frank, > > My TDR is nearly fifty years old, but still it works great. > > Array Solutions sells more modern multi-functions devices that are perform > very well as a TDR. Here's an example display from Array Solutions' web site: > > https://www.arraysolutions.com/images/AIMuhf-TDR-fig1.png > > The display for a Beverage looks very similar, you can see every component > from the shack to the termination resistor. > > 73 > Frank > W3LPL > > - Original Message - > > From: dl8yhrfr...@aol.com > To: donov...@starpower.net > Sent: Monday, November 23, 2015 9:20:55 PM > Subject: Re: Topband: fixing beverage > > where can i get such toy? > > > > > -Urspr ngliche Mitteilung- > Von: donovanf > An: TopBand List > Cc: Jorge Diez - CX6VM > Verschickt: Mo, 23 Nov 2015 9:39 pm > Betreff: Re: Topband: fixing beverage > > > > A Time Domain Reflectometer is one of the best tools to verify > the proper performance and isolate faults of a Beverage and many > other types of antennas. > > In the case of a Beverage, the TDR allows you to see every > component of the antenna system from the ham shack all the way > to the termination resistor. If anything fails you can almost > always walk directly to it with the needed replacement parts and > tools in hand. > > 73 > Frank > W3LPL > > - Original Message - > > From: "Jorge Diez - CX6VM" < cx6vm.jo...@gmail.com > > To: "TopBand List" < topband@contesting.com > > Sent: Monday, November 23, 2015 8:29:15 PM > Subject: Re: Topband: fixing beverage > > Thanks all you guys for the help > > Will do this tests and see what is wrong > > 73, > Jorge > CX6VM/CW5W > > -Mensaje original- > De: Tom W8JI [ mailto:w...@w8ji.com ] > Enviado el: lunes, 23 de noviembre de 2015 02:35 p.m. > Para: Jorge Diez - CX6VM; 'TopBand List' > Asunto: Re: Topband: fixing beverage > > > > > I notice that my USA beverage is lower in 3-4 S units that some weeks ago. > > > > 5-20 dB. Depending on receiver and where it is at on the S meter. > > That has to be a poor connection, open, or short between the receiver and the > Beverage transformer end of the Beverage. It cannot be at the termination > end. > > > At simple view all seems to be OK. I think the coax is not the > > problem, because if I have a problem in the coax, will be completely deaf, > right? > > No. Coax can do this. It happens all the time. Especially at connectors. > > > > > So this can be the cause of a problem in the end resistor or maybe in > > the transformer? I use in this beverage a WX0B beverage boxes > > > > It can not be at the end resistor termination. > > The problem is if you disturb something it will often start working. You need > to > carefully check one thing at a time. Many times, if not most times, this is > corrosion or tarnish on the center pin of the coax. Sometimes it is a broken > wire, or a bad part from lightning or water. > > The best way to test it is with an SWR meter and do a frequency sweep from > the > house, before you touch the antenna or any outside connections. The frequency > of > either adjacent major dips in SWR or impedance will allow you to calculate > exactly where the problem is. The MFJ analyzer will do this within a few > feet, > even on a 1000 foot cable, by using distance to fault. > > 73 Tom > > --- > El software de antivirus Avast ha analizado este correo electr nico en busca > de > virus. > https://www.avast.com/antivirus > > _ > Topband Reflector Archives - http://www.contesting.com/_topband > _ > Topband Reflector Archives - http://www.contesting.com/_topband > > _ > Topband Reflector Archi
Re: Topband: fixing beverage
When you get the problem solved, save the TDR trace for future reference. You can even take a picture of it with a camera. Art NK8X On Mon, Nov 23, 2015 at 8:11 PM, James Bennett wrote: > Jorge, > > I also have a 4170 and it does do TDR without any additional software or > hardware. The user manual has several pages on how to use the 4170 as a TDR. > > Jim Bennett / W6JHB > Folsom, CA > > > On Nov 23, 2015, at 5:03 PM, donov...@starpower.net wrote: > > > > Hi Jorge, > > > > > > The AIM4170 has TDR capabilities. I don't own an AIM470, but > > surely someone on the Topband reflector can help you use it > > as a TDR. > > > > > > 73 > > Frank > > W3LPL > > > > - Original Message - > > > > From: "Jorge Diez - CX6VM" > > To: donov...@starpower.net > > Sent: Monday, November 23, 2015 11:56:32 PM > > Subject: RE: Topband: fixing beverage > > > > Hi Frank > > > > I google and the first option was Campbellsci.es > > > > In 5 minutes the CX representative emailed me and told me that is a very > very expensive toy for my use :-) > > > > I have the AIM4170, will do this job? I use the software AIM_852.exe I > need another software or this is OK? > > > > Thanks, > > Jorge > > > > > > -Mensaje original- > > De: Topband [mailto:topband-boun...@contesting.com] En nombre de > donov...@starpower.net > > Enviado el: lunes, 23 de noviembre de 2015 06:51 p.m. > > Para: topband@contesting.com > > CC: dl8yhrfr...@aol.com > > Asunto: Re: Topband: fixing beverage > > > > > > Hi Frank, > > > > > > My TDR is nearly fifty years old, but still it works great. > > > > > > Array Solutions sells more modern multi-functions devices that are > perform very well as a TDR. Here's an example display from Array Solutions' > web site: > > > > > > https://www.arraysolutions.com/images/AIMuhf-TDR-fig1.png > > > > > > The display for a Beverage looks very similar, you can see every > component from the shack to the termination resistor. > > > > > > 73 > > Frank > > W3LPL > > > > > > - Original Message - > > > > From: dl8yhrfr...@aol.com > > To: donov...@starpower.net > > Sent: Monday, November 23, 2015 9:20:55 PM > > Subject: Re: Topband: fixing beverage > > > > where can i get such toy? > > > > > > > > > > > > > > -Urspr ngliche Mitteilung- > > Von: donovanf > > An: TopBand List > > Cc: Jorge Diez - CX6VM > > Verschickt: Mo, 23 Nov 2015 9:39 pm > > Betreff: Re: Topband: fixing beverage > > > > > > > > > > > > A Time Domain Reflectometer is one of the best tools to verify > > the proper performance and isolate faults of a Beverage and many > > other types of antennas. > > > > > > In the case of a Beverage, the TDR allows you to see every > > component of the antenna system from the ham shack all the way > > to the termination resistor. If anything fails you can almost > > always walk directly to it with the needed replacement parts and > > tools in hand. > > > > > > 73 > > Frank > > W3LPL > > > > - Original Message - > > > > From: "Jorge Diez - CX6VM" < cx6vm.jo...@gmail.com > > > To: "TopBand List" < topband@contesting.com > > > Sent: Monday, November 23, 2015 8:29:15 PM > > Subject: Re: Topband: fixing beverage > > > > Thanks all you guys for the help > > > > Will do this tests and see what is wrong > > > > 73, > > Jorge > > CX6VM/CW5W > > > > -Mensaje original- > > De: Tom W8JI [ mailto:w...@w8ji.com ] > > Enviado el: lunes, 23 de noviembre de 2015 02:35 p.m. > > Para: Jorge Diez - CX6VM; 'TopBand List' > > Asunto: Re: Topband: fixing beverage > > > >> > >> I notice that my USA beverage is lower in 3-4 S units that some weeks > ago. > > > > 5-20 dB. Depending on receiver and where it is at on the S meter. > > > > That has to be a poor connection, open, or short between the receiver > and the > > Beverage transformer end of the Beverage. It cannot be at the > termination end. > > > > > >> At simple view all seems to be OK. I think the coax is not the > >> problem, because if I have a problem in the coax, will be completely > deaf, > > right? > > > > No. Coax can do this. It happens all the time. Especially at connectors. > > > >> > >> So this can be the cause of a problem in the end resistor or maybe in > >> the transformer? I use in this beverage a WX0B beverage boxes > > > > It can not be at the end resistor termination. > > > > The problem is if you disturb something it will often start working. You > need to > > carefully check one thing at a time. Many times, if not most times, this > is > > corrosion or tarnish on the center pin of the coax. Sometimes it is a > broken > > wire, or a bad part from lightning or water. > > > > The best way to test it is with an SWR meter and do a frequency sweep > from the > > house, before you touch the antenna or any outside connections. The > frequency of > > either adjacent major dips in SWR or impedance will allow you to > calculate > > exactly where the problem is. The MFJ analyzer will do this within a few > feet, > > even on a 1000 foot cable, by
Re: Topband: fixing beverage
Jorge, I also have a 4170 and it does do TDR without any additional software or hardware. The user manual has several pages on how to use the 4170 as a TDR. Jim Bennett / W6JHB Folsom, CA > On Nov 23, 2015, at 5:03 PM, donov...@starpower.net wrote: > > Hi Jorge, > > > The AIM4170 has TDR capabilities. I don't own an AIM470, but > surely someone on the Topband reflector can help you use it > as a TDR. > > > 73 > Frank > W3LPL > > - Original Message - > > From: "Jorge Diez - CX6VM" > To: donov...@starpower.net > Sent: Monday, November 23, 2015 11:56:32 PM > Subject: RE: Topband: fixing beverage > > Hi Frank > > I google and the first option was Campbellsci.es > > In 5 minutes the CX representative emailed me and told me that is a very very > expensive toy for my use :-) > > I have the AIM4170, will do this job? I use the software AIM_852.exe I need > another software or this is OK? > > Thanks, > Jorge > > > -Mensaje original- > De: Topband [mailto:topband-boun...@contesting.com] En nombre de > donov...@starpower.net > Enviado el: lunes, 23 de noviembre de 2015 06:51 p.m. > Para: topband@contesting.com > CC: dl8yhrfr...@aol.com > Asunto: Re: Topband: fixing beverage > > > Hi Frank, > > > My TDR is nearly fifty years old, but still it works great. > > > Array Solutions sells more modern multi-functions devices that are perform > very well as a TDR. Here's an example display from Array Solutions' web site: > > > https://www.arraysolutions.com/images/AIMuhf-TDR-fig1.png > > > The display for a Beverage looks very similar, you can see every component > from the shack to the termination resistor. > > > 73 > Frank > W3LPL > > > - Original Message - > > From: dl8yhrfr...@aol.com > To: donov...@starpower.net > Sent: Monday, November 23, 2015 9:20:55 PM > Subject: Re: Topband: fixing beverage > > where can i get such toy? > > > > > > > -Urspr ngliche Mitteilung- > Von: donovanf > An: TopBand List > Cc: Jorge Diez - CX6VM > Verschickt: Mo, 23 Nov 2015 9:39 pm > Betreff: Re: Topband: fixing beverage > > > > > > A Time Domain Reflectometer is one of the best tools to verify > the proper performance and isolate faults of a Beverage and many > other types of antennas. > > > In the case of a Beverage, the TDR allows you to see every > component of the antenna system from the ham shack all the way > to the termination resistor. If anything fails you can almost > always walk directly to it with the needed replacement parts and > tools in hand. > > > 73 > Frank > W3LPL > > - Original Message - > > From: "Jorge Diez - CX6VM" < cx6vm.jo...@gmail.com > > To: "TopBand List" < topband@contesting.com > > Sent: Monday, November 23, 2015 8:29:15 PM > Subject: Re: Topband: fixing beverage > > Thanks all you guys for the help > > Will do this tests and see what is wrong > > 73, > Jorge > CX6VM/CW5W > > -Mensaje original- > De: Tom W8JI [ mailto:w...@w8ji.com ] > Enviado el: lunes, 23 de noviembre de 2015 02:35 p.m. > Para: Jorge Diez - CX6VM; 'TopBand List' > Asunto: Re: Topband: fixing beverage > >> >> I notice that my USA beverage is lower in 3-4 S units that some weeks ago. > > 5-20 dB. Depending on receiver and where it is at on the S meter. > > That has to be a poor connection, open, or short between the receiver and the > Beverage transformer end of the Beverage. It cannot be at the termination > end. > > >> At simple view all seems to be OK. I think the coax is not the >> problem, because if I have a problem in the coax, will be completely deaf, > right? > > No. Coax can do this. It happens all the time. Especially at connectors. > >> >> So this can be the cause of a problem in the end resistor or maybe in >> the transformer? I use in this beverage a WX0B beverage boxes > > It can not be at the end resistor termination. > > The problem is if you disturb something it will often start working. You need > to > carefully check one thing at a time. Many times, if not most times, this is > corrosion or tarnish on the center pin of the coax. Sometimes it is a broken > wire, or a bad part from lightning or water. > > The best way to test it is with an SWR meter and do a frequency sweep from > the > house, before you touch the antenna or any outside connections. The frequency > of > either adjacent major dips in SWR or impedance will allow you to calculate > exactly where the problem is. The MFJ analyzer will do this within a few > feet, > even on a 1000 foot cable, by using distance to fault. > > 73 Tom > > > --- > El software de antivirus Avast ha analizado este correo electr nico en busca > de > virus. > https://www.avast.com/antivirus > > _ > Topband Reflector Archives - http://www.contesting.com/_topband > _ > Topband Reflector Archives - http://www.contesting.com/_topband > >
Re: Topband: fixing beverage
Hi Jorge, The AIM4170 has TDR capabilities. I don't own an AIM470, but surely someone on the Topband reflector can help you use it as a TDR. 73 Frank W3LPL - Original Message - From: "Jorge Diez - CX6VM" To: donov...@starpower.net Sent: Monday, November 23, 2015 11:56:32 PM Subject: RE: Topband: fixing beverage Hi Frank I google and the first option was Campbellsci.es In 5 minutes the CX representative emailed me and told me that is a very very expensive toy for my use :-) I have the AIM4170, will do this job? I use the software AIM_852.exe I need another software or this is OK? Thanks, Jorge -Mensaje original- De: Topband [mailto:topband-boun...@contesting.com] En nombre de donov...@starpower.net Enviado el: lunes, 23 de noviembre de 2015 06:51 p.m. Para: topband@contesting.com CC: dl8yhrfr...@aol.com Asunto: Re: Topband: fixing beverage Hi Frank, My TDR is nearly fifty years old, but still it works great. Array Solutions sells more modern multi-functions devices that are perform very well as a TDR. Here's an example display from Array Solutions' web site: https://www.arraysolutions.com/images/AIMuhf-TDR-fig1.png The display for a Beverage looks very similar, you can see every component from the shack to the termination resistor. 73 Frank W3LPL - Original Message - From: dl8yhrfr...@aol.com To: donov...@starpower.net Sent: Monday, November 23, 2015 9:20:55 PM Subject: Re: Topband: fixing beverage where can i get such toy? -Urspr ngliche Mitteilung- Von: donovanf An: TopBand List Cc: Jorge Diez - CX6VM Verschickt: Mo, 23 Nov 2015 9:39 pm Betreff: Re: Topband: fixing beverage A Time Domain Reflectometer is one of the best tools to verify the proper performance and isolate faults of a Beverage and many other types of antennas. In the case of a Beverage, the TDR allows you to see every component of the antenna system from the ham shack all the way to the termination resistor. If anything fails you can almost always walk directly to it with the needed replacement parts and tools in hand. 73 Frank W3LPL - Original Message - From: "Jorge Diez - CX6VM" < cx6vm.jo...@gmail.com > To: "TopBand List" < topband@contesting.com > Sent: Monday, November 23, 2015 8:29:15 PM Subject: Re: Topband: fixing beverage Thanks all you guys for the help Will do this tests and see what is wrong 73, Jorge CX6VM/CW5W -Mensaje original- De: Tom W8JI [ mailto:w...@w8ji.com ] Enviado el: lunes, 23 de noviembre de 2015 02:35 p.m. Para: Jorge Diez - CX6VM; 'TopBand List' Asunto: Re: Topband: fixing beverage > > I notice that my USA beverage is lower in 3-4 S units that some weeks ago. > 5-20 dB. Depending on receiver and where it is at on the S meter. That has to be a poor connection, open, or short between the receiver and the Beverage transformer end of the Beverage. It cannot be at the termination end. > At simple view all seems to be OK. I think the coax is not the > problem, because if I have a problem in the coax, will be completely deaf, right? No. Coax can do this. It happens all the time. Especially at connectors. > > So this can be the cause of a problem in the end resistor or maybe in > the transformer? I use in this beverage a WX0B beverage boxes > It can not be at the end resistor termination. The problem is if you disturb something it will often start working. You need to carefully check one thing at a time. Many times, if not most times, this is corrosion or tarnish on the center pin of the coax. Sometimes it is a broken wire, or a bad part from lightning or water. The best way to test it is with an SWR meter and do a frequency sweep from the house, before you touch the antenna or any outside connections. The frequency of either adjacent major dips in SWR or impedance will allow you to calculate exactly where the problem is. The MFJ analyzer will do this within a few feet, even on a 1000 foot cable, by using distance to fault. 73 Tom --- El software de antivirus Avast ha analizado este correo electr nico en busca de virus. https://www.avast.com/antivirus _ Topband Reflector Archives - http://www.contesting.com/_topband _ Topband Reflector Archives - http://www.contesting.com/_topband _ Topband Reflector Archives - http://www.contesting.com/_topband --- El software de antivirus Avast ha analizado este correo electrónico en busca de virus. https://www.avast.com/antivirus _ Topband Reflector Archives - http://www.contesting.com/_topband
Re: Topband: fixing beverage
I noticed that's an AIM. Owen Duffy has written numerous articles about their software and/or hardware, and they are not very flattering. http://owenduffy.net/blog/?s=aim Maybe things have improved lately, but AIM would not be my first choice. His test equipment category is at http://owenduffy.net/blog/?cat=2 and AIM is just one of them. 73, Mike www.w0btu.com On Mon, Nov 23, 2015 at 3:50 PM, wrote: > Array Solutions sells more modern multi-functions devices that are perform > very well as a TDR. Here's an example display from Array Solutions' web > site: > https://www.arraysolutions.com/images/AIMuhf-TDR-fig1.png > _ Topband Reflector Archives - http://www.contesting.com/_topband
Re: Topband: fixing beverage
Hi Frank, My TDR is nearly fifty years old, but still it works great. Array Solutions sells more modern multi-functions devices that are perform very well as a TDR. Here's an example display from Array Solutions' web site: https://www.arraysolutions.com/images/AIMuhf-TDR-fig1.png The display for a Beverage looks very similar, you can see every component from the shack to the termination resistor. 73 Frank W3LPL - Original Message - From: dl8yhrfr...@aol.com To: donov...@starpower.net Sent: Monday, November 23, 2015 9:20:55 PM Subject: Re: Topband: fixing beverage where can i get such toy? -Ursprüngliche Mitteilung- Von: donovanf An: TopBand List Cc: Jorge Diez - CX6VM Verschickt: Mo, 23 Nov 2015 9:39 pm Betreff: Re: Topband: fixing beverage A Time Domain Reflectometer is one of the best tools to verify the proper performance and isolate faults of a Beverage and many other types of antennas. In the case of a Beverage, the TDR allows you to see every component of the antenna system from the ham shack all the way to the termination resistor. If anything fails you can almost always walk directly to it with the needed replacement parts and tools in hand. 73 Frank W3LPL - Original Message - From: "Jorge Diez - CX6VM" < cx6vm.jo...@gmail.com > To: "TopBand List" < topband@contesting.com > Sent: Monday, November 23, 2015 8:29:15 PM Subject: Re: Topband: fixing beverage Thanks all you guys for the help Will do this tests and see what is wrong 73, Jorge CX6VM/CW5W -Mensaje original- De: Tom W8JI [ mailto:w...@w8ji.com ] Enviado el: lunes, 23 de noviembre de 2015 02:35 p.m. Para: Jorge Diez - CX6VM; 'TopBand List' Asunto: Re: Topband: fixing beverage > > I notice that my USA beverage is lower in 3-4 S units that some weeks ago. > 5-20 dB. Depending on receiver and where it is at on the S meter. That has to be a poor connection, open, or short between the receiver and the Beverage transformer end of the Beverage. It cannot be at the termination end. > At simple view all seems to be OK. I think the coax is not the > problem, because if I have a problem in the coax, will be completely deaf, right? No. Coax can do this. It happens all the time. Especially at connectors. > > So this can be the cause of a problem in the end resistor or maybe in > the transformer? I use in this beverage a WX0B beverage boxes > It can not be at the end resistor termination. The problem is if you disturb something it will often start working. You need to carefully check one thing at a time. Many times, if not most times, this is corrosion or tarnish on the center pin of the coax. Sometimes it is a broken wire, or a bad part from lightning or water. The best way to test it is with an SWR meter and do a frequency sweep from the house, before you touch the antenna or any outside connections. The frequency of either adjacent major dips in SWR or impedance will allow you to calculate exactly where the problem is. The MFJ analyzer will do this within a few feet, even on a 1000 foot cable, by using distance to fault. 73 Tom --- El software de antivirus Avast ha analizado este correo electrónico en busca de virus. https://www.avast.com/antivirus _ 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: fixing beverage
A Time Domain Reflectometer is one of the best tools to verify the proper performance and isolate faults of a Beverage and many other types of antennas. In the case of a Beverage, the TDR allows you to see every component of the antenna system from the ham shack all the way to the termination resistor. If anything fails you can almost always walk directly to it with the needed replacement parts and tools in hand. 73 Frank W3LPL - Original Message - From: "Jorge Diez - CX6VM" To: "TopBand List" Sent: Monday, November 23, 2015 8:29:15 PM Subject: Re: Topband: fixing beverage Thanks all you guys for the help Will do this tests and see what is wrong 73, Jorge CX6VM/CW5W -Mensaje original- De: Tom W8JI [mailto:w...@w8ji.com] Enviado el: lunes, 23 de noviembre de 2015 02:35 p.m. Para: Jorge Diez - CX6VM; 'TopBand List' Asunto: Re: Topband: fixing beverage > > I notice that my USA beverage is lower in 3-4 S units that some weeks ago. > 5-20 dB. Depending on receiver and where it is at on the S meter. That has to be a poor connection, open, or short between the receiver and the Beverage transformer end of the Beverage. It cannot be at the termination end. > At simple view all seems to be OK. I think the coax is not the > problem, because if I have a problem in the coax, will be completely deaf, > right? No. Coax can do this. It happens all the time. Especially at connectors. > > So this can be the cause of a problem in the end resistor or maybe in > the transformer? I use in this beverage a WX0B beverage boxes > It can not be at the end resistor termination. The problem is if you disturb something it will often start working. You need to carefully check one thing at a time. Many times, if not most times, this is corrosion or tarnish on the center pin of the coax. Sometimes it is a broken wire, or a bad part from lightning or water. The best way to test it is with an SWR meter and do a frequency sweep from the house, before you touch the antenna or any outside connections. The frequency of either adjacent major dips in SWR or impedance will allow you to calculate exactly where the problem is. The MFJ analyzer will do this within a few feet, even on a 1000 foot cable, by using distance to fault. 73 Tom --- El software de antivirus Avast ha analizado este correo electrónico en busca de virus. https://www.avast.com/antivirus _ Topband Reflector Archives - http://www.contesting.com/_topband _ Topband Reflector Archives - http://www.contesting.com/_topband
Re: Topband: fixing beverage
Thanks all you guys for the help Will do this tests and see what is wrong 73, Jorge CX6VM/CW5W -Mensaje original- De: Tom W8JI [mailto:w...@w8ji.com] Enviado el: lunes, 23 de noviembre de 2015 02:35 p.m. Para: Jorge Diez - CX6VM; 'TopBand List' Asunto: Re: Topband: fixing beverage > > I notice that my USA beverage is lower in 3-4 S units that some weeks ago. > 5-20 dB. Depending on receiver and where it is at on the S meter. That has to be a poor connection, open, or short between the receiver and the Beverage transformer end of the Beverage. It cannot be at the termination end. > At simple view all seems to be OK. I think the coax is not the > problem, because if I have a problem in the coax, will be completely deaf, > right? No. Coax can do this. It happens all the time. Especially at connectors. > > So this can be the cause of a problem in the end resistor or maybe in > the transformer? I use in this beverage a WX0B beverage boxes > It can not be at the end resistor termination. The problem is if you disturb something it will often start working. You need to carefully check one thing at a time. Many times, if not most times, this is corrosion or tarnish on the center pin of the coax. Sometimes it is a broken wire, or a bad part from lightning or water. The best way to test it is with an SWR meter and do a frequency sweep from the house, before you touch the antenna or any outside connections. The frequency of either adjacent major dips in SWR or impedance will allow you to calculate exactly where the problem is. The MFJ analyzer will do this within a few feet, even on a 1000 foot cable, by using distance to fault. 73 Tom --- El software de antivirus Avast ha analizado este correo electrónico en busca de virus. https://www.avast.com/antivirus _ Topband Reflector Archives - http://www.contesting.com/_topband
Re: Topband: fixing beverage
I notice that my USA beverage is lower in 3-4 S units that some weeks ago. 5-20 dB. Depending on receiver and where it is at on the S meter. That has to be a poor connection, open, or short between the receiver and the Beverage transformer end of the Beverage. It cannot be at the termination end. At simple view all seems to be OK. I think the coax is not the problem, because if I have a problem in the coax, will be completely deaf, right? No. Coax can do this. It happens all the time. Especially at connectors. So this can be the cause of a problem in the end resistor or maybe in the transformer? I use in this beverage a WX0B beverage boxes It can not be at the end resistor termination. The problem is if you disturb something it will often start working. You need to carefully check one thing at a time. Many times, if not most times, this is corrosion or tarnish on the center pin of the coax. Sometimes it is a broken wire, or a bad part from lightning or water. The best way to test it is with an SWR meter and do a frequency sweep from the house, before you touch the antenna or any outside connections. The frequency of either adjacent major dips in SWR or impedance will allow you to calculate exactly where the problem is. The MFJ analyzer will do this within a few feet, even on a 1000 foot cable, by using distance to fault. 73 Tom _ Topband Reflector Archives - http://www.contesting.com/_topband
Re: Topband: fixing beverage
Good information from Herb.. Water in the coax can cause attenuation. 73 Bruce-k1fz www.qsl.net/k1fz/beverage_antenna.html On Mon, 23 Nov 2015 10:49:18 -0400, Herbert Schoenbohm wrote: Jorge, 1. Measure the wire resistance in respect to ground and it should show a resistance a little bit higher than your termination value. This will check for breaks in the wire, 2. Put a temporary termination on the end of the coax (any convenient value) and measure it at the shack end. 3. Check both sides of the beverage box with an ohm meter and you should see only a few ohms on both sides. 4. Put a 450 ohm resistor across the Beverage side of the transformer and check from the shack with a MFJ-259 for SWR. 5. If you don't have a MFJ 259 or equivalent try running 1 watt RF out the cable and check the VSWR at the shack. (Most boxes with take a couple of watts for a few seonds assuming you have a 2 watt resistor across the Beverage side terminals. 6. Pull the wire out of the weeds.☺ Herb Schoenbohm, KV4FZ On 11/23/2015 10:21 AM, Jorge Diez - CX6VM wrote: Hello I notice that my USA beverage is lower in 3-4 S units that some weeks ago. At simple view all seems to be OK. I think the coax is not the problem, because if I have a problem in the coax, will be completely deaf, right? So this can be the cause of a problem in the end resistor or maybe in the transformer? I use in this beverage a WX0B beverage boxes What do you I need to test first? Thanks, Jorge CX6VM/CW5W --- El software de antivirus Avast ha analizado este correo electrónico en busca de virus. https://www.avast.com/antivirus _ 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: fixing beverage
Not necessarily. I've seen a poor ground cause low signal levels. 73, Mike www.w0btu.com On Mon, Nov 23, 2015 at 8:21 AM, Jorge Diez - CX6VM wrote: > ... I think the coax is not the problem, because if I have a problem in > the coax, will be completely deaf, right? > _ Topband Reflector Archives - http://www.contesting.com/_topband
Re: Topband: fixing beverage
Jorge, 1. Measure the wire resistance in respect to ground and it should show a resistance a little bit higher than your termination value. This will check for breaks in the wire, 2. Put a temporary termination on the end of the coax (any convenient value) and measure it at the shack end. 3. Check both sides of the beverage box with an ohm meter and you should see only a few ohms on both sides. 4. Put a 450 ohm resistor across the Beverage side of the transformer and check from the shack with a MFJ-259 for SWR. 5. If you don't have a MFJ 259 or equivalent try running 1 watt RF out the cable and check the VSWR at the shack. (Most boxes with take a couple of watts for a few seonds assuming you have a 2 watt resistor across the Beverage side terminals. 6. Pull the wire out of the weeds.☺ Herb Schoenbohm, KV4FZ On 11/23/2015 10:21 AM, Jorge Diez - CX6VM wrote: Hello I notice that my USA beverage is lower in 3-4 S units that some weeks ago. At simple view all seems to be OK. I think the coax is not the problem, because if I have a problem in the coax, will be completely deaf, right? So this can be the cause of a problem in the end resistor or maybe in the transformer? I use in this beverage a WX0B beverage boxes What do you I need to test first? Thanks, Jorge CX6VM/CW5W --- El software de antivirus Avast ha analizado este correo electrónico en busca de virus. https://www.avast.com/antivirus _ Topband Reflector Archives - http://www.contesting.com/_topband _ Topband Reflector Archives - http://www.contesting.com/_topband
Topband: fixing beverage
Hello I notice that my USA beverage is lower in 3-4 S units that some weeks ago. At simple view all seems to be OK. I think the coax is not the problem, because if I have a problem in the coax, will be completely deaf, right? So this can be the cause of a problem in the end resistor or maybe in the transformer? I use in this beverage a WX0B beverage boxes What do you I need to test first? Thanks, Jorge CX6VM/CW5W --- El software de antivirus Avast ha analizado este correo electrónico en busca de virus. https://www.avast.com/antivirus _ Topband Reflector Archives - http://www.contesting.com/_topband
