Re: [Repeater-Builder] Wanted to buy: Panasonic CF-25 laptop or equivalent for radio programmming
CF-27's are probably as easy or easier to find and maybe cheaper on Ebay... We have been using them for DOS radio RSS programming for a long time... and generally the batteries cost more than the laptop...many are 300/350 mhz processors, some 500-550 mhz... I have one (PIII 500) set up for DOS and XP, I use it for all RSS we operate up to and including M/A-Com RPM... I use a boot floppy to get to DOS and have all the DOS RSS in a fat32 partition. It has a real serial port and a touch screen to boot... I think I paid $90.00 for it plus shipping...and it has a win2k COAas well...Probably a good choice for 99.9% of what needs to be programmed in the radio world... The HT600/P200 sw I think is the quirkiest about CPU, the rest seem pretty flexible.. in the PII and PIII sub 600 mhz areaa real 16450/16550 UART is more important Doug KD8B At 06:51 PM 6/12/2008, you wrote: yes, hence the ..or equivalent... part. On Thu, Jun 12, 2008 at 2:53 PM, Barry C' mailto:atec77%40hotmail.com[EMAIL PROTECTED] wrote: Doesn't the machine just need a suitable port and speed ? , the toughbook isn't a must ? To: mailto:forsale-swap%40mailman.qth.net[EMAIL PROTECTED]; mailto:motorola%40mailman.qth.net[EMAIL PROTECTED]; mailto:motorola-Radios%40yahoogroups.com[EMAIL PROTECTED]; mailto:Repeater-Builder%40yahoogroups.comRepeater-Builder@yahoogroups.com From: mailto:sacramento.cyclist%40gmail.com[EMAIL PROTECTED] Date: Wed, 11 Jun 2008 21:20:24 -0700 Subject: [Repeater-Builder] Wanted to buy: Panasonic CF-25 laptop or equivalent for radio programmming Good evening everyone, Subject says it all. Thought I had one lined up but the seller flaked. Need a CF-25 Toughbook or equivalent to program my MT-1000 and Spectras. Let me know what you've got plus shipping to 95608. Thanks! Dennis -- Dennis L. Wade KG6ZI Carmichael, CA
[Repeater-Builder] RE: [msf5000] MSF5000 Forced Battery Revert
Jesse, The short answer is that switching power supplies are significantly more efficient than either linear or ferro-resonant power supplies over most of their output range. At idle, switchers draw practically no current, whereas linear and ferro-resonant supplies are always generating some heat- and heat is wasted power. Before we get too far into this discussion, I must remind our readers that measurement of AC power requires a true-RMS power meter; one cannot measure AC power by taking independent readings of voltage and current. When separate readings of AC voltage and AC current are made and then multiplied together, the product is volt-amperes not watts. Volt-amperes, or VA, is apparent power not real power, and it will be greater than real power in any inductive circuit. To measure real power accurately, an AC power meter uses a four-quadrant multiplier to make measurements of voltage and current at the same point in the cycle. The aluminum disc that spins in your kilowatthour meter is driven by two coils- one which is energized by the line voltage, and one which is energized by line current. The torque produced in the disc is the instantaneous product of voltage and current, and that torque is proportional to true power in watts. A permanent magnet brake controls the speed of the disc so that it is calibrated in watts and is geared to a dial that displays the accumulated energy consumed in kilowatthours. Your electric bill is for consumption of watts, not volt-amperes. I have just posted a number of power supply load test reports in the Files section of the Repeater-Builder site. Look for a folder entitled, Power Supplies. This is a work in progress, and I am collecting new data as time permits. I just upgraded my electronic load, and I can now load up to 50 amperes, so several of my load tests will be repeated. Also, I started my project using a fairly stiff 120 VAC branch circuit, but I soon realized that test results were affected by the droop in my line voltage caused by increasing voltage drop as the load on the UUT increased. More recent tests have been performed with an input maintained at exactly 120 VAC. Since the efficiency of any appliance is the ratio of power out to power in, the Overall Efficiency value is just that- the DC load in watts divided by the AC input power in watts. Ironically, the overall efficiency of some power supply designs will vary significantly as the AC input voltage varies. Linear power supplies, such as the Astron RS-35, become more efficient as the input voltage drops, because less heat is generated in the pass transistors. At a point just above the level where output regulation fails, the pass transistors are saturated and generating minimum heat. 73, Eric Lemmon WB6FLY -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Jesse Lloyd Sent: Thursday, June 12, 2008 8:46 PM To: [EMAIL PROTECTED] Subject: Re: [msf5000] MSF5000 Forced Battery Revert Eric, From your study which power supplies did you find to be the most efficient, and also which have the least idle current? Jesse VE7LYD On Thu, Jun 12, 2008 at 8:07 PM, [EMAIL PROTECTED] wrote: On Thu, 12 Jun 2008 18:59:46 -0700, Eric Lemmon wrote: If your MSF5000 power supply consumes 500 watts when unloaded, it has a serious problem and needs repair. Interesting. I can't get to them now, but I checked them both after getting them on the ham band and they both did it. Over the years, I've also tested several constant voltage or ferro-resonant transformers and they all drew just about the same current when loaded or unloaded. That's why they run so hot when they have no load. I can't recheck now, so will just let this float until such time as I can do so. Until then, disregard what I said. Gary
Re: [Repeater-Builder] Wanted to buy: Panasonic CF-25 laptop or equivalent for radio programmming
Thank you all for the advice. However, I have had no success with using XP (or finding a DOS startup option..are you sure you're not confusing XP with WIn98SE?). Maybe you have a dual boot setup? Remember I need to use Moto RSS for the MT-1000 and Spectra. The only machine I have had luck with is a P1 processor at 166 mhz running WIn98SE. I've tried faster laptops and desktops...P2s and P3's with both XP and WIn98 with no luck at all. (Win98 is always started in DOS mode, never a DOS window). Thank you again for all the replies...I appreciate it. Dennis On Fri, Jun 13, 2008 at 6:50 AM, Doug Bade [EMAIL PROTECTED] wrote: CF-27's are probably as easy or easier to find and maybe cheaper on Ebay... We have been using them for DOS radio RSS programming for a long time... and generally the batteries cost more than the laptop...many are 300/350 mhz processors, some 500-550 mhz... I have one (PIII 500) set up for DOS and XP, I use it for all RSS we operate up to and including M/A-Com RPM... I use a boot floppy to get to DOS and have all the DOS RSS in a fat32 partition. It has a real serial port and a touch screen to boot... I think I paid $90.00 for it plus shipping...and it has a win2k COAas well...Probably a good choice for 99.9% of what needs to be programmed in the radio world... The HT600/P200 sw I think is the quirkiest about CPU, the rest seem pretty flexible.. in the PII and PIII sub 600 mhz areaa real 16450/16550 UART is more important Doug KD8B At 06:51 PM 6/12/2008, you wrote: yes, hence the ..or equivalent... part. On Thu, Jun 12, 2008 at 2:53 PM, Barry C' mailto:atec77%40hotmail.com[EMAIL PROTECTED] wrote: Doesn't the machine just need a suitable port and speed ? , the toughbook isn't a must ? To: mailto:forsale-swap%40mailman.qth.net[EMAIL PROTECTED]; mailto:motorola%40mailman.qth.net[EMAIL PROTECTED]; mailto:motorola-Radios%40yahoogroups.com[EMAIL PROTECTED]; mailto:Repeater-Builder%40yahoogroups.comRepeater-Builder@yahoogroups.com From: mailto:sacramento.cyclist%40gmail.com[EMAIL PROTECTED] Date: Wed, 11 Jun 2008 21:20:24 -0700 Subject: [Repeater-Builder] Wanted to buy: Panasonic CF-25 laptop or equivalent for radio programmming Good evening everyone, Subject says it all. Thought I had one lined up but the seller flaked. Need a CF-25 Toughbook or equivalent to program my MT-1000 and Spectras. Let me know what you've got plus shipping to 95608. Thanks! Dennis -- Dennis L. Wade KG6ZI Carmichael, CA -- Dennis L. Wade KG6ZI Carmichael, CA
Re: [Repeater-Builder] RE: [msf5000] MSF5000 Forced Battery Revert
The laymans equation for power is P=IE(cos(phase difference between I E)) The cos of phase difference is the power factor. This could be hard to determine by most who do not have the proper equipment. However, power is not the voltage and current at a single point of time, but the product of the intergal of the IE wave giving the RMS power. This is the power we are most often concerned with. My home power meter was changed about a year ago to a digital one that can be read by a worker in a van passing by on the street. The old for over 70 years meter of a motor with rotor and stator in parrallel/series worked great and was simple. I wonder what method is being used with the new digital meters. 73, ron, n9ee/r From: Eric Lemmon [EMAIL PROTECTED] Date: 2008/06/13 Fri PM 12:36:02 EDT To: [EMAIL PROTECTED] Cc: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] RE: [msf5000] MSF5000 Forced Battery Revert Jesse, The short answer is that switching power supplies are significantly more efficient than either linear or ferro-resonant power supplies over most of their output range. At idle, switchers draw practically no current, whereas linear and ferro-resonant supplies are always generating some heat- and heat is wasted power. Before we get too far into this discussion, I must remind our readers that measurement of AC power requires a true-RMS power meter; one cannot measure AC power by taking independent readings of voltage and current. When separate readings of AC voltage and AC current are made and then multiplied together, the product is volt-amperes not watts. Volt-amperes, or VA, is apparent power not real power, and it will be greater than real power in any inductive circuit. To measure real power accurately, an AC power meter uses a four-quadrant multiplier to make measurements of voltage and current at the same point in the cycle. The aluminum disc that spins in your kilowatthour meter is driven by two coils- one which is energized by the line voltage, and one which is energized by line current. The torque produced in the disc is the instantaneous product of voltage and current, and that torque is proportional to true power in watts. A permanent magnet brake controls the speed of the disc so that it is calibrated in watts and is geared to a dial that displays the accumulated energy consumed in kilowatthours. Your electric bill is for consumption of watts, not volt-amperes. I have just posted a number of power supply load test reports in the Files section of the Repeater-Builder site. Look for a folder entitled, Power Supplies. This is a work in progress, and I am collecting new data as time permits. I just upgraded my electronic load, and I can now load up to 50 amperes, so several of my load tests will be repeated. Also, I started my project using a fairly stiff 120 VAC branch circuit, but I soon realized that test results were affected by the droop in my line voltage caused by increasing voltage drop as the load on the UUT increased. More recent tests have been performed with an input maintained at exactly 120 VAC. Since the efficiency of any appliance is the ratio of power out to power in, the Overall Efficiency value is just that- the DC load in watts divided by the AC input power in watts. Ironically, the overall efficiency of some power supply designs will vary significantly as the AC input voltage varies. Linear power supplies, such as the Astron RS-35, become more efficient as the input voltage drops, because less heat is generated in the pass transistors. At a point just above the level where output regulation fails, the pass transistors are saturated and generating minimum heat. 73, Eric Lemmon WB6FLY -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Jesse Lloyd Sent: Thursday, June 12, 2008 8:46 PM To: [EMAIL PROTECTED] Subject: Re: [msf5000] MSF5000 Forced Battery Revert Eric, From your study which power supplies did you find to be the most efficient, and also which have the least idle current? Jesse VE7LYD On Thu, Jun 12, 2008 at 8:07 PM, [EMAIL PROTECTED] wrote: On Thu, 12 Jun 2008 18:59:46 -0700, Eric Lemmon wrote: If your MSF5000 power supply consumes 500 watts when unloaded, it has a serious problem and needs repair. Interesting. I can't get to them now, but I checked them both after getting them on the ham band and they both did it. Over the years, I've also tested several constant voltage or ferro-resonant transformers and they all drew just about the same current when loaded or unloaded. That's why they run so hot when they have no load. I can't recheck now, so will just let this float until such time as I can do so. Until then, disregard what I said. Gary Ron Wright, N9EE 727-376-6575 MICRO COMPUTER CONCEPTS Owner 146.64 repeater Tampa Bay, FL No tone, all are
RE: [Repeater-Builder] Re: ICOM repeater
Darrell, Would you please contact me off list I have some questions concerning setting up sound cards and such for my repeater. You may contact me at: [EMAIL PROTECTED] Thanks much. Scott N7ZIB No virus found in this incoming message. Checked by AVG. Version: 8.0.100 / Virus Database: 270.3.0/1501 - Release Date: 6/13/2008 6:33 AM
Re: [Repeater-Builder] Wanted to buy: Panasonic CF-25 laptop or equivalent for radio programmming
There is no DOS startup internal to XP, however you can make a DOS boot floppy from the Format A: floppy screen. The trick is you need to partition the hard drive into 2 partitions 1 fat32 and pretty much needs to be less than 1024 mb and the rest as NTFS for XP to use...Copy all the DOS programs to the fat32 partition, and when you boot from floppy with the boot disk you created in XP foramtting tab, the DOS fat32 partition will be visible as C : to the floppy command and interpretter... go to C:xx as you would normally and it will run fine The only way to have DOS startup from XP is to have a DOS disk overlaid with XP in fat32 mode.. not NTFS, and that is far from a stock install... The entire process I listed above can be done on a new XP install by short installing the hard drive by 1 meg or so, and reserve that to convert to a fat 32 partition later...then let XP install the rest of the drive as it normally would.. after that you can go into disk manger and format the remaining extra disk space as fat32 and put whatever DOS stuff you want on it then a boot floppy will get you to it... It sounds a lot more complicated than it is... Doug At 01:07 PM 6/13/2008, you wrote: Thank you all for the advice. However, I have had no success with using XP (or finding a DOS startup option..are you sure you're not confusing XP with WIn98SE?). Maybe you have a dual boot setup? Remember I need to use Moto RSS for the MT-1000 and Spectra. The only machine I have had luck with is a P1 processor at 166 mhz running WIn98SE. I've tried faster laptops and desktops...P2s and P3's with both XP and WIn98 with no luck at all. (Win98 is always started in DOS mode, never a DOS window). Thank you again for all the replies...I appreciate it. Dennis On Fri, Jun 13, 2008 at 6:50 AM, Doug Bade mailto:kd8b%40thebades.net[EMAIL PROTECTED] wrote: CF-27's are probably as easy or easier to find and maybe cheaper on Ebay... We have been using them for DOS radio RSS programming for a long time... and generally the batteries cost more than the laptop...many are 300/350 mhz processors, some 500-550 mhz... I have one (PIII 500) set up for DOS and XP, I use it for all RSS we operate up to and including M/A-Com RPM... I use a boot floppy to get to DOS and have all the DOS RSS in a fat32 partition. It has a real serial port and a touch screen to boot... I think I paid $90.00 for it plus shipping...and it has a win2k COAas well...Probably a good choice for 99.9% of what needs to be programmed in the radio world... The HT600/P200 sw I think is the quirkiest about CPU, the rest seem pretty flexible.. in the PII and PIII sub 600 mhz areaa real 16450/16550 UART is more important Doug KD8B At 06:51 PM 6/12/2008, you wrote: yes, hence the ..or equivalent... part. On Thu, Jun 12, 2008 at 2:53 PM, Barry C' mailto:atec77%40hotmail.commailto:atec77%40hotmail.comatec77@ hotmail.com wrote: Doesn't the machine just need a suitable port and speed ? , the toughbook isn't a must ? To: mailto:forsale-swap%40mailman.qth.netmailto:forsale-swap%40mailman.qth.net[EMAIL PROTECTED]; mailto:motorola%40mailman.qth.netmailto:motorola%40mailman.qth.net[EMAIL PROTECTED]; mailto:motorola-Radios%40yahoogroups.commailto:motorola-Radios%40yahoogroups.com[EMAIL PROTECTED]; mailto:Repeater-Builder%40yahoogroups.commailto:Repeater-Builder%40yahoogroups.comRepeater-Builder@yahoogroups.com From: mailto:sacramento.cyclist%40gmail.commailto:sacramento.cyclist%40gmail.com[EMAIL PROTECTED] Date: Wed, 11 Jun 2008 21:20:24 -0700 Subject: [Repeater-Builder] Wanted to buy: Panasonic CF-25 laptop or equivalent for radio programmming Good evening everyone, Subject says it all. Thought I had one lined up but the seller flaked. Need a CF-25 Toughbook or equivalent to program my MT-1000 and Spectras. Let me know what you've got plus shipping to 95608. Thanks! Dennis -- Dennis L. Wade KG6ZI Carmichael, CA -- Dennis L. Wade KG6ZI Carmichael, CA
Re: [Repeater-Builder] Wanted to buy: Panasonic CF-25 laptop or equivalent for radio programmming
I meant short installing by 1gb... 1024 mb... sorryor whatever you can spare from the XP drive for DOS programs and that depends on how many you have.. or wish to collect :-) Doug At 03:31 PM 6/13/2008, you wrote: There is no DOS startup internal to XP, however you can make a DOS boot floppy from the Format A: floppy screen. The trick is you need to partition the hard drive into 2 partitions 1 fat32 and pretty much needs to be less than 1024 mb and the rest as NTFS for XP to use...Copy all the DOS programs to the fat32 partition, and when you boot from floppy with the boot disk you created in XP foramtting tab, the DOS fat32 partition will be visible as C : to the floppy command and interpretter... go to C:xx as you would normally and it will run fine The only way to have DOS startup from XP is to have a DOS disk overlaid with XP in fat32 mode.. not NTFS, and that is far from a stock install... The entire process I listed above can be done on a new XP install by short installing the hard drive by 1 meg or so, and reserve that to convert to a fat 32 partition later...then let XP install the rest of the drive as it normally would.. after that you can go into disk manger and format the remaining extra disk space as fat32 and put whatever DOS stuff you want on it then a boot floppy will get you to it... It sounds a lot more complicated than it is... Doug At 01:07 PM 6/13/2008, you wrote: Thank you all for the advice. However, I have had no success with using XP (or finding a DOS startup option..are you sure you're not confusing XP with WIn98SE?). Maybe you have a dual boot setup? Remember I need to use Moto RSS for the MT-1000 and Spectra. The only machine I have had luck with is a P1 processor at 166 mhz running WIn98SE. I've tried faster laptops and desktops...P2s and P3's with both XP and WIn98 with no luck at all. (Win98 is always started in DOS mode, never a DOS window). Thank you again for all the replies...I appreciate it. Dennis On Fri, Jun 13, 2008 at 6:50 AM, Doug Bade mailto:kd8b%40thebades.netmailto:kd8b%40thebades.net[EMAIL PROTECTED] des.net wrote: CF-27's are probably as easy or easier to find and maybe cheaper on Ebay... We have been using them for DOS radio RSS programming for a long time... and generally the batteries cost more than the laptop...many are 300/350 mhz processors, some 500-550 mhz... I have one (PIII 500) set up for DOS and XP, I use it for all RSS we operate up to and including M/A-Com RPM... I use a boot floppy to get to DOS and have all the DOS RSS in a fat32 partition. It has a real serial port and a touch screen to boot... I think I paid $90.00 for it plus shipping...and it has a win2k COAas well...Probably a good choice for 99.9% of what needs to be programmed in the radio world... The HT600/P200 sw I think is the quirkiest about CPU, the rest seem pretty flexible.. in the PII and PIII sub 600 mhz areaa real 16450/16550 UART is more important Doug KD8B At 06:51 PM 6/12/2008, you wrote: yes, hence the ..or equivalent... part. On Thu, Jun 12, 2008 at 2:53 PM, Barry C' mailto:atec77%40hotmail.commailto:atec77%40hotmail.comatec77@ hotmail.com wrote: Doesn't the machine just need a suitable port and speed ? , the toughbook isn't a must ? To: mailto:forsale-swap%40mailman.qth.netmailto:forsale-swap%40mailman.qth.netmailto:forsale-swap%40mailman.qth.net[EMAIL PROTECTED]; mailto:motorola%40mailman.qth.netmailto:motorola%40mailman.qth.netmailto:motorola%40mailman.qth.net[EMAIL PROTECTED]; mailto:motorola-Radios%40yahoogroups.commailto:motorola-Radios%40yahoogroups.commailto:motorola-Radios%40yahoogroups.com[EMAIL PROTECTED]; mailto:Repeater-Builder%40yahoogroups.commailto:Repeater-Builder%40yahoogroups.commailto:Repeater-Builder%40yahoogroups.comRepeater-Builder@yahoogroups.com From: mailto:sacramento.cyclist%40gmail.commailto:sacramento.cyclist%40gmail.commailto:sacramento.cyclist%40gmail.com[EMAIL PROTECTED] Date: Wed, 11 Jun 2008 21:20:24 -0700 Subject: [Repeater-Builder] Wanted to buy: Panasonic CF-25 laptop or equivalent for radio programmming Good evening everyone, Subject says it all. Thought I had one lined up but the seller flaked. Need a CF-25 Toughbook or equivalent to program my MT-1000 and Spectras. Let me know what you've got plus shipping to 95608. Thanks! Dennis -- Dennis L. Wade KG6ZI Carmichael, CA -- Dennis L. Wade KG6ZI Carmichael, CA
RE: [Repeater-Builder] Wanted to buy: Panasonic CF-25 laptop or equivalent for radio programmming
I would think a disk manager with dual boot dos /xp or what ever as required but you may need to set the bios correctly for the slow comms on the ports used which is what I do here for programming things in my area of expertise although I just boot to dos from xp ( which is almost a simulation) and run things there . To: Repeater-Builder@yahoogroups.com From: [EMAIL PROTECTED] Date: Fri, 13 Jun 2008 10:07:16 -0700 Subject: Re: [Repeater-Builder] Wanted to buy: Panasonic CF-25 laptop or equivalent for radio programmming Thank you all for the advice. However, I have had no success with using XP (or finding a DOS startup option..are you sure you're not confusing XP with WIn98SE?). Maybe you have a dual boot setup? Remember I need to use Moto RSS for the MT-1000 and Spectra. The only machine I have had luck with is a P1 processor at 166 mhz running WIn98SE. I've tried faster laptops and desktops...P2s and P3's with both XP and WIn98 with no luck at all. (Win98 is always started in DOS mode, never a DOS window). Thank you again for all the replies...I appreciate it. Dennis On Fri, Jun 13, 2008 at 6:50 AM, Doug Bade [EMAIL PROTECTED] wrote: CF-27's are probably as easy or easier to find and maybe cheaper on Ebay... We have been using them for DOS radio RSS programming for a long time... and generally the batteries cost more than the laptop...many are 300/350 mhz processors, some 500-550 mhz... I have one (PIII 500) set up for DOS and XP, I use it for all RSS we operate up to and including M/A-Com RPM... I use a boot floppy to get to DOS and have all the DOS RSS in a fat32 partition. It has a real serial port and a touch screen to boot... I think I paid $90.00 for it plus shipping...and it has a win2k COAas well...Probably a good choice for 99.9% of what needs to be programmed in the radio world... The HT600/P200 sw I think is the quirkiest about CPU, the rest seem pretty flexible.. in the PII and PIII sub 600 mhz areaa real 16450/16550 UART is more important Doug KD8B At 06:51 PM 6/12/2008, you wrote: yes, hence the ..or equivalent... part. On Thu, Jun 12, 2008 at 2:53 PM, Barry C' mailto:atec77%40hotmail.com[EMAIL PROTECTED] wrote: Doesn't the machine just need a suitable port and speed ? , the toughbook isn't a must ? To: mailto:forsale-swap%40mailman.qth.net[EMAIL PROTECTED]; mailto:motorola%40mailman.qth.net[EMAIL PROTECTED]; mailto:motorola-Radios%40yahoogroups.com[EMAIL PROTECTED]; mailto:Repeater-Builder%40yahoogroups.comRepeater-Builder@yahoogroups.com From: mailto:sacramento.cyclist%40gmail.com[EMAIL PROTECTED] Date: Wed, 11 Jun 2008 21:20:24 -0700 Subject: [Repeater-Builder] Wanted to buy: Panasonic CF-25 laptop or equivalent for radio programmming Good evening everyone, Subject says it all. Thought I had one lined up but the seller flaked. Need a CF-25 Toughbook or equivalent to program my MT-1000 and Spectras. Let me know what you've got plus shipping to 95608. Thanks! Dennis -- Dennis L. Wade KG6ZI Carmichael, CA -- Dennis L. Wade KG6ZI Carmichael, CA _ Search for local singles online @ Lavalife - Click here http://a.ninemsn.com.au/b.aspx?URL=http%3A%2F%2Flavalife9%2Eninemsn%2Ecom%2Eau%2Fclickthru%2Fclickthru%2Eact%3Fid%3Dninemsn%26context%3Dan99%26locale%3Den%5FAU%26a%3D30290_t=764581033_r=email_taglines_Search_OCT07_m=EXT
RE: [Repeater-Builder] Can anyone identify this old antenna?
Celwave? I picked up a set of 4 new folded dipoles that look like those at Dayton one year and they had a Celwave tag on them. tom n8ies [Original Message] From: ve3iqzz [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Date: 6/13/2008 10:35:55 PM Subject: [Repeater-Builder] Can anyone identify this old antenna? This antenna was used for the old Bell Mobile Phone system on about 153 MHz. It was damaged by lightning and replaced. There is no identification on it. There are pictures in the Photos section, Unknown Antenna http://ph.groups.yahoo.com/group/Repeater-Builder/photos/browse/4fbe The harness is made of RG8, RG11, and RG83. There are photos of the cable to cable connections also. Can anyone identify this old 1970's antenna? Yahoo! Groups Links
Re: [Repeater-Builder] RE: [msf5000] MSF5000 Forced Battery Revert
On Jun 13, 2008, at 3:24 PM, Eric Lemmon wrote: The latest solid-state kilowatthour meters being installed by some utility companies use the same four-quadrant multiplier technique to measure energy usage. Such meters have the additional capability of recording power factor and energy demand, and can document the time-of-use for billing purposes. One very interesting revenue meter, trade-marked as The Turtle uses a low-speed carrier current data stream to transmit meter readings over the power line to the utility. This eliminates the need to send a meter reader out to the boonies to read a few rural farmhouse meters. A major benefit of Turtle technology is that the data stream stops when the power fails at the meter location, so the utility knows within seconds who has a power outage. Pretty neat! Most of the examples I've seen aren't using low speeds on the carrier. They're basically BPL and therefore, evil... or at least a serious HF interference source... depending on where you fall in that continuum of thought. A Google search for Smart Grid and similar will find these new HF band threats. Xcel Energy has convinced the local government to spend hundreds of millions in taxpayer money on this infrastructure (which benefits the power company far more than the consumer) in Boulder, CO. Trials (and lots of people watching for HF noise, and the resulting battles) to begin soon. -- Nate Duehr, WY0X [EMAIL PROTECTED]
