RE: [Repeater-Builder] HP8924C RF Analyzer scan
I have the service manual and operations manual if you need it. They are both pretty big files. Randy W4CPT -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of james a fosse Sent: Friday, June 19, 2009 10:18 AM To: Repeater-Builder@yahoogroups.com; hp8...@yahoogroups.com Subject: [Repeater-Builder] HP8924C RF Analyzer scan Hello, I just received a HP8924C Monday. Wednesday, I was able to get the RF Analyzer to scan frequencies and lock onto the transmitter output. I changed something and can no longer get the RF analyzer section to scan. It just stays at the frequency set in the tune frequency box. It does not matter whether the tune mode is set to auto or manual. Can anyone help me find the setting that I changed and restore it? regards, jim fosse KI6NJF No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.5.339 / Virus Database: 270.12.85/2193 - Release Date: 06/21/09 20:02:00
RE: [Repeater-Builder] Unknow Radio - Anyone can help?
I have one of those also. It was given to me by someone that knew I did work with radios. I remember seeing these back in the late 60's, or one very similar to it. It had an extend feature on it. Mine is in the VHF band. It would take a lot of CPR to get or keep them running I would think. Just think of all those old old caps in there. Randy W4CPT -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Mike Morris WA6ILQ Sent: Saturday, August 02, 2008 11:02 AM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Unknow Radio - Anyone can help? At 07:16 AM 08/02/08, you wrote: Can you post a photo or two of the interior ? I don't have it, but you can take a look at the schematics on http://www.msxpro. http://www.msxpro.com/py2bbs/esquemateca.php com/py2bbs/esquemateca.php It is the last schematic, the Unitel Patrulheiro III Greetz from Brazil Alexandre - PU1BZZ In the adjustes file there are some interior photos. As others have said, that radio is the USA model called the Mocom 70. It was preceded by the Motrac (hybrid tube/transistor) and the Motran (all transistor) and followed by the Micor. Mike WA6ILQ No virus found in this incoming message. Checked by AVG - http://www.avg.com Version: 8.0.138 / Virus Database: 270.5.10/1586 - Release Date: 8/1/2008 6:59 PM
RE: RE: [Repeater-Builder] FW: Dayton and Parts you might need....
For at least the last two or three years I have been to Dayton Fest, there has been someone using a recording with what could be called “colorful metaphors”. It has been on the talk-in channel which I usually need to use. I have had to turn the radio off because of this language and having my family in the vehicle. I would like to think someone is working on this. Has the person responsible been caught? Does this happen only during the Fest? Is there anyway a fellow ham can help catch this person? I will be glad to supply a new rope and go in search of an appropriate tree!! Randy B. -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Ron Wright Sent: Monday, April 21, 2008 9:14 AM To: Repeater-Builder@yahoogroups.com Subject: Re: RE: [Repeater-Builder] FW: Dayton and Parts you might need One of the largest repeater systems in the US is just down the road on 145.190. However, will be more than busy during Dayton. Last I heard 145.19 had over 32 rcv sites and 7 distant city repeaters linked in. 73, ron, n9ee/r From: HYPERLINK mailto:no6b%40no6b.com[EMAIL PROTECTED] Date: 2008/04/20 Sun PM 11:29:43 CDT To: HYPERLINK mailto:Repeater-Builder%40yahoogroups.com[EMAIL PROTECTED] m Subject: RE: [Repeater-Builder] FW: Dayton and Parts you might need At 4/20/2008 07:12, you wrote: For others reading this list/thread, I am putting together an Excel spreadsheet of freqs that wil most likely be used at Dayton, so I can program them into my radios. Feel free to send along any freqs you will be using so I can add them in! Thanks, Mark N9WYS One of the most popular local systems is WF8M 443.775 (+) PL-131.8. Has IRLP (node 4267), which makes it rather busy all hamvention weekend. The system I'll be linking my portable repeater to in Miamisburg (WB8VSU 442.300 (+) PL-123.0) also has IRLP (node 4235) but doesn't cover Hara as well so hasn't been very busy. Bob NO6B Ron Wright, N9EE 727-376-6575 MICRO COMPUTER CONCEPTS Owner 146.64 repeater Tampa Bay, FL No tone, all are welcome. No virus found in this incoming message. Checked by AVG. Version: 7.5.524 / Virus Database: 269.23.8/1412 - Release Date: 5/2/2008 4:34 PM No virus found in this outgoing message. Checked by AVG. Version: 7.5.524 / Virus Database: 269.23.8/1412 - Release Date: 5/2/2008 4:34 PM
[Repeater-Builder] DB-224 problem
After a day of work putting together and putting up a DB224E in the 138-150 range I found the thing to be resonate at 150 MHZ center. After a few colorful metaphors, I find I turned one of the elements upside down with the feed at the bottom. Would this be enough to throw the antenna off balance or should I look for problems somewhere else also? I get a 2.0 SWR at 146.000. I don’t mind a second trip up the tower to turn the element around (it’s the lower element), but that third trip would do me in! Randy B. W4CPT No virus found in this outgoing message. Checked by AVG. Version: 7.5.519 / Virus Database: 269.22.12 - Release Date: 4/10/2008 12:00 AM
RE: [Repeater-Builder] Would anyone like to talk about SERA in KY? Off list...
I have worked with them on my location and while things move slow they came through for me. I was really in no hurry, but they were friendly anytime I contacted them for information. I joined SERA but have never received the news journal. I was wondering if they still print it. I personally wish we had a group set up and may just do that as we all need to be in contact at times. I will let you know if I do. Randy W4CPT -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of w4wsm Sent: Monday, February 18, 2008 12:35 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Would anyone like to talk about SERA in KY? Off list... Just wanted to see if anyone in KY had any comments about SERA...We don't seem to have any represention here in the western side of KY. What are other repeater owners doing? Email me or if you want reply here that's fine. I'm not putting SERA down but would like to hear comments others have about them... Ben W4WSM w4wsm at insightbb.com No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.5.516 / Virus Database: 269.20.7/1285 - Release Date: 2/18/2008 5:50 AM No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.516 / Virus Database: 269.20.8/1287 - Release Date: 2/19/2008 10:55 AM
RE: [Repeater-Builder] Address book hijacked
Karl, Thanks for letting us know, and I apologize for being a little blunt earlier. I will try to think before I leap next time. Stay in here with us. Randy B. -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Karl E. Simonson - KS9E Sent: Sunday, February 03, 2008 3:27 AM To: Karl E. Simonson Subject: [Repeater-Builder] Address book hijacked I sincerely apologize for the inconvenience / intrusion. It has come to my attention that my address book / contact list has been hijacked. Please disregard the solicitation / invitation email which you may have received. Thank you. --Karl No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.5.516 / Virus Database: 269.19.19/1256 - Release Date: 2/2/2008 1:50 PM No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.516 / Virus Database: 269.19.19/1256 - Release Date: 2/2/2008 1:50 PM
RE: [Repeater-Builder] Karl invites you to join Zorpia
If I want to make friends around the world I will get on HF. This crap doesn't belong here. Randy -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Karl Sent: Saturday, February 02, 2008 9:50 PM To: repeater-builder Subject: [Repeater-Builder] Karl invites you to join Zorpia http://img.zorpia.com/invitation/frame_left.gif http://img.zorpia.com/invitation/frame_top.gif http://www.zorpia.com/ Zorpia.com - Photos Journals Hi repeater-builder, You are special! Your friend Karl, invites you to be a part of Zorpia! _ So what is Zorpia? Zorpia is a Global Online Community, where you will make friends from around the world, and share your experiences through Journals, Photos, Videos and more. Like a virtual online country, when you join Zorpia, you are not just a member, but a 'Zorpian'. Be a part of a special, rapidly growing group of people from all corners of the world. Join Zorpia today, and make your mark by using our range of fully customizable pre-configured skins on your homepage. http://signup.zorpia.com/signup?invitation_key=200802f0f3ac503f510e54da26c9 1400referral=Karl54499 Join now for free! Karl's profile photo: http://signup.zorpia.com/signup?invitation_key=200802f0f3ac503f510e54da26c9 1400referral=Karl54499 This message was delivered with the Karl's initiation. If you wish to discontinue receiving invitations from us, please click here: Block http://signup.zorpia.com/email/optout/repeater-builder@yahoogroups.com future notifications Copyright(c) 2003-2007 Zorpia.com http://www.zorpia.com/ . All Rights Reserved.
RE: [Repeater-Builder] new repeater
I hope you have a frequency already.if not, that is your first pitfall. 2 meter frequencies are almost impossible to get in some parts. If you have one this is the place to ask questions. Randy -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED] Sent: Friday, February 01, 2008 4:59 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] new repeater Hi, I am building a 2 meter repeater. Am leaning towards Motorola surplus. Mitrek probably. Any suggestions or short cuts around bad pitfalls I may be coming to? Sure would like to use good equipment and save some $ too. I have researched Mitrek repeaters some but would like more input. I am planning nothing fancy. Only the basics. Thanks, Collin __ More new features than ever. Check out the new AOL Mail ! - http://webmail. http://webmail.aol.com aol.com
RE: [Repeater-Builder] Daniel's repeater
It sounds like Daniel's may not make the 100 amp but use a downstream amplifier. That would be ok with us also. Randy -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of CO004 Sent: Monday, October 29, 2007 6:41 AM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Daniel's repeater In a not so long ago life I had a number of them to maintain around the State of Colorado, all at very high, remote, solar sites. They were extremely dependable and worked well in both analog and P25. At one site, lightning took out the solar controller two different times, but the Daniels came right back up both times after the solar controller was replaced and the batteries charged up a bit. Harry On Oct 28, 2007, at 4:12 PM, R. K. Brumback wrote: Until a couple of days ago I never heard of a “Daniel’s” repeater. Yahoo! Groups Links No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.5.503 / Virus Database: 269.15.12/1097 - Release Date: 10/28/2007 1:58 PM No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.503 / Virus Database: 269.15.12/1097 - Release Date: 10/28/2007 1:58 PM Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * Your email settings: Individual Email | Traditional * To change settings online go to: http://groups.yahoo.com/group/Repeater-Builder/join (Yahoo! ID required) * To change settings via email: mailto:[EMAIL PROTECTED] mailto:[EMAIL PROTECTED] * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[Repeater-Builder] Daniel's repeater
Until a couple of days ago I never heard of a “Daniel’s” repeater. I am looking for a new VHF analog repeater and one of my friends mentioned Daniel which is in Canada. Is anyone familiar with this company and their products? No essays, but just looking for a short “Yes their great” or “Don’t even think about them. Many thanks in advance. Randy No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.503 / Virus Database: 269.15.12/1096 - Release Date: 10/27/2007 11:02 AM
RE: [Repeater-Builder] OT- Weather Radio Recall
Quote: “for between $30 and $150.” WOW!! Consumer beware………huh Randy -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of tgundo2003 Sent: Thursday, August 30, 2007 9:30 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] OT- Weather Radio Recall This is a bit off-topic, but I thought it would be important to get the word out as life safety is involved... Tom W9SRV NEWS from CPSC U.S. Consumer Product Safety Commission Office of Information and Public Affairs Washington, DC 20207 FOR IMMEDIATE RELEASE August 29, 2007 Release #07-292 Firm's Recall Hotline: (800) 203-4921 CPSC Recall Hotline: (800) 638-2772 CPSC Media Contact: (301) 504-7908 Weather Radios Recalled by Oregon Scientific Due to Failure to Receive National Weather Service Alerts WASHINGTON, D.C. - The U.S. Consumer Product Safety Commission, in cooperation with the firm named below, today announced a voluntary recall of the following consumer product. Consumers should stop using recalled products immediately unless otherwise instructed. Name of Product: Oregon Scientific Weather Radios Units: About 66,000 Manufacturer: Oregon Scientific Inc., of Tualatin, Ore. Hazard: The radios could fail to receive National Weather Service alert signals in certain areas of the country. In the event of severe weather, this failure could put a consumer's life and property at risk. Incidents/Injuries: None reported. Description: This recall involves the following Weather Radios and Weather Stations: NAME MODEL All Hazards Portable Weather Alert Radio WR103NX Portable Public Alert Radio WR108 Public Alert Weather Station WRB308 John Deere Public Alert Weather Station WRB308J No other models are included in this recall. Sold at: Retail stores nationwide, including some electronics and sporting goods stores, online retailers and in catalogs from December 2005 through June 2007 for between $30 and $150. Manufactured in: China Remedy: Consumers should not rely on the recalled weather radios to receive emergency information. Consumers should contact Oregon Scientific for instructions on returning the radio to receive a free replacement. Consumer Contact: For additional information, contact Oregon Scientific at (800) 203-4921 between 8 a.m. and 5 p.m. PT Monday through Friday or visit the firm's Web site at www2.oregonscientif-ic.com To see this recall on CPSC's web site, including pictures of the recalled products, please go to: HYPERLINK http://www.cpsc.gov/cpscpub/prerel/prhtml07/07292.htmlhttp://www.cpsc.-gov /cpscpub/-prerel/prhtml07/-07292.html No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.5.484 / Virus Database: 269.12.6 - Release Date: 8/24/2007 12:00 AM No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.484 / Virus Database: 269.12.6 - Release Date: 8/24/2007 12:00 AM
RE: [Repeater-Builder] Re: Duplexers
Quote: “In AC power lines little is paid attention to as for transmission except for R losses and power factor.” I can remember doing an experiment in college where we needed 60 HZ exactly and would have to call the generation plant to see if they were running at 60 HZ. I never did think we could guarantee we had 60 HZ as the Z will change somewhat with distance from the plant. That is why the power companies put large capacitors in the line to bring it back in phase. Quote: “Yes up the voltage/lower the current and the IR loss goes down.” This brought back a laugh as I once ran 500 foot of extension cord to run a circular saw. Wasn’t getting much done so I hooked it up to 220 volts source. Had about 140 volts under load. You could saw till the blade turned blue. Randy B. -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Ron Wright Sent: Wednesday, August 29, 2007 10:32 AM To: Repeater-Builder@yahoogroups.com Subject: Re: Re: Re: Re: RE: [Repeater-Builder] Re: Duplexers Ralph, Transmission line theory for RF and AC power is totally different. In AC power lines little is paid attention to as for transmission except for R losses and power factor. Yes up the voltage/lower the current and the IR loss goes down. For RF this is totally different for the RF propergatesdown the line, not just passes as voltage and currents. This is why feedlines have specific impedances and loads used. One can have any impedance of coax or twin feeds one wants...that is if you have the material and space for it. One can get off the shelf 75 Ohm twin lead. Using 50 or 75 Ohm has more to do with stability especially at RF. IR drops in feedlines is much less than a factor than the LC/dielectric type losses. Again frequency shows this. 100 W at 10 MHz and 1000 MHz will have radically different losses yet both have the same I and V and R. 73, ron, n9ee/r From: Ralph Mowery HYPERLINK mailto:ku4pt%40yahoo.com[EMAIL PROTECTED] Date: 2007/08/27 Mon AM 09:20:07 CDT To: HYPERLINK mailto:Repeater-Builder%40yahoogroups.com[EMAIL PROTECTED] m Subject: Re: Re: Re: RE: [Repeater-Builder] Re: Duplexers --- Ron Wright HYPERLINK mailto:mccrpt%40verizon.net[EMAIL PROTECTED] wrote: Jesse, Then why do twin feeders have much less loss than coax??? Skin affect is even more of a factor there due to the differences in the area of the outer shield in coax vs the twin feeders wire. Maybe it is because of the larger C coupling in the coax due to the larger surface area of the shield. Coax has a lower R even with skin effect than twin line feeders. Skin affect is a factor, but a small one compared to the LC factor. 73, ron, n9ee/r It is not open wire or coax that determins the power loss. It is the impedance of the line and the size of the conductors for frequencies up to 1000 Mhz or so. To transfer 1000 watts of power , the voltage will be higher and the current lower in most prectical open wire lines. That is because the impedance will be around 300 to 600 ohms. Coax is usually 50 or 70 ohms. To get 1000 watts of power through that impedance line it requires less voltage and more current. This is the principal of regular 60 hz power line transmission. Up the voltage to a few hundred thousand volts and the current will go down. This lowers the losses. I don't care to take time to do the calculations, but if you take some small guage wire (say # 20) and space it close to make about 200 ohms line and figuer the loss, it may be higher than some 1 inch or even 1/2 inch hardline. At frequencies below around 1000 Mhz the major loss is the IsqR loss in all lines. Radiation is a very small part. In coax there is a point in which the current on the shield is not flowing but jumping from point to point where the shield wires cross. This causes some resistance. That is partly why the foil shielded coax and hardline is lower in loss than regular coax. ___-_-_-_-_-_-__ Be a better Heartthrob. Get better relationship answers from someone who knows. Yahoo! Answers - Check it out. HYPERLINK http://answers.yahoo.com/dir/?link=listsid=396545433http://answers.-yahoo .com/-dir/?link=-listsid=-396545433 Ron Wright, N9EE 727-376-6575 MICRO COMPUTER CONCEPTS Owner 146.64 repeater Tampa Bay, FL No tone, all are welcome. No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.5.484 / Virus Database: 269.12.6 - Release Date: 8/24/2007 12:00 AM No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.484 / Virus Database: 269.12.6 - Release Date: 8/24/2007 12:00 AM
RE: RE: Re: Re: RE: [Repeater-Builder] Re: Duplexers
Quote: “If there weren't resistors in there too, transmission lines would have no loss.” Yes, with a perfect Z, resistance would be the only math to do for loss. But it is never perfect as even FM has a changing frequency and we use a broad range of frequencies. I have enjoyed this thread so much I am printing it out and re-reading it to get more knowledge. I tip my hat and bow deeply in your direction. Randy W4CPT Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Jeff DePolo Sent: Wednesday, August 29, 2007 11:28 AM To: Repeater-Builder@yahoogroups.com Subject: RE: RE: Re: Re: RE: [Repeater-Builder] Re: Duplexers There's a capacitor hidden in in my coax? Where? I can't find it, and now I've ruined my cable looking for it :-) Yep, whenever one has two conductors with spacing between them you got a cap. For a cap in coax might try looking for the conductors of center and shield...looks like 2 conductors seperated to me, hi. Yep there are caps in that coax. It was a joke... That is what makes a feedline...parralle-l caps and series inductors. They determine the coax or any other feedline characterist impedance. You forgot the resistors that are in series with the inductors and caps (in real-world transmission lines). If there weren't resistors in there too, transmissions lines would have no loss. --- Jeff No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.5.484 / Virus Database: 269.12.6 - Release Date: 8/24/2007 12:00 AM No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.484 / Virus Database: 269.12.6 - Release Date: 8/24/2007 12:00 AM
RE: [Repeater-Builder] Duplexers
I have heard this point argued for years. “Does trimming the coax affect the SWR?” If the length of coax has an affect on impedance, then how could it not affect power out? We strive to maintain 50 ohms at the tail of all devices to match the end load. GE puts matching networks in their Mastr II’s. I have taken a MFJ-259 and soldered a PL259 only at one end and then started trimming the coax down and watched the impedance change significantly with each cut. Duplexers come with precise lengths of cabling. I have heard that trimming coax only fools the meter. Not being an engineer with millions worth of equipment I can only make a SWAG (scientific wild ass guess) as to whether coax length makes a difference in power out. Randy W4CPT -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Jeff DePolo Sent: Saturday, August 25, 2007 12:30 AM To: Repeater-Builder@yahoogroups.com Subject: RE: [Repeater-Builder] Duplexers When you put the Bird between the TX and the duplexer, you have changed the length of the jumper cable, which upset the tuning. Adding a wattmeter or any other length of cable between the transmitter and the duplexer Tx input port has no effect on the tuning of the duplexer. It may change the load Z the transmitter sees, which may make the transmitter happier (or sadder) depending on the resulting Z, but in no way does it alter the tuning of the duplexer itself. Adding or removing cable lengths between the transmitter and duplexer also does not change the VSWR as seen by the transmitter (minimal cable loss effects notwithstanding)-. --- Jeff - Jeff DePolo - HYPERLINK mailto:jd1%40broadsci.com[EMAIL PROTECTED] Broadcast Sciences LLC, Valley Forge PA v: 610.917.3000 f: 610.917.3030 No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.5.484 / Virus Database: 269.12.6 - Release Date: 8/24/2007 12:00 AM No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.484 / Virus Database: 269.12.6 - Release Date: 8/24/2007 12:00 AM
RE: [Repeater-Builder] Duplexers
Quote from Jesse: When you are using a VSWR meter you are measuring voltage, if you move the meter to a different spot on the cable, the voltage is different, therefore it gives you a different reading. This now makes more sense to me as I once saw a feed line demonstration with voltage and current sleds showing the difference at different points along the line. At some places the voltage was null (as with any sine wave). I dont see how this could happen at the antenna port of a transmitter unless it was microwave as the cabling from the tuner to the output connector is not near ½ wave. Also to Alan, I appreciate your sympathy for us little people but I do find this very interesting. And as you can see, the experts sometimes need a tune up. Randy W4CPT -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Jesse Lloyd Sent: Monday, August 27, 2007 12:48 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Duplexers The length of coax doesn't effect impedance. Trimming the coax effects what is read on the VSWR meter because what is actually happening is that there is an interference pattern created when you have a mismatch on the end of feedline. This pattern is sinusoidal and changes in voltage and current along the line, in 1/2 wave periods. You will find max voltage peaks and min voltage peaks. Also current will go up and down too. When you are using a VSWR meter you are measuring voltage, if you move the meter to a different spot on the cable, the voltage is different, therefor it gives you a different reading. Now if you put a voltage null at your transmitter, what would happen? Normally with high SWR your transmitter will get hot because its dissipating the reflected power into its heatsink. If you put it at a voltage null, I would suspect that the SWR would not get dissipated by the transmitter as much as if you put it at a voltage peak. The standing waves are still there, there is still a mismatch, you will get the same power out, but its just not going to hurt your transmitter as much because of the heat. The only time coax length makes a difference to power out is if your using it in a matching stub, or a matching section ie. if you take 1/4 wave of 75 ohm cable put it on the end of 50 ohm cable you will get a match with a 112.5 ohm load. You make an interesting point though, why does the cabling of duplexer's need to be a certain length. I would suspect that its because they are looped and make an inductor. This then is part of the LC filtering, and changing the length effects L. But I could be wrong on that. Jesse On 8/27/07, R. K. Brumback HYPERLINK mailto:[EMAIL PROTECTED][EMAIL PROTECTED] wrote: I have heard this point argued for years. Does trimming the coax affect the SWR? If the length of coax has an affect on impedance, then how could it not affect power out? We strive to maintain 50 ohms at the tail of all devices to match the end load. GE puts matching networks in their Mastr II's. I have taken a MFJ-259 and soldered a PL259 only at one end and then started trimming the coax down and watched the impedance change significantly with each cut. Duplexers come with precise lengths of cabling. I have heard that trimming coax only fools the meter. Not being an engineer with millions worth of equipment I can only make a SWAG (scientific wild ass guess) as to whether coax length makes a difference in power out. Randy W4CPT -Original Message- From: HYPERLINK mailto:Repeater-Builder@yahoogroups.com[EMAIL PROTECTED] [mailto:HYPERLINK mailto:Repeater-; [EMAIL PROTECTED] HYPERLINK http://ups.com; \nups.com] On Behalf Of Jeff DePolo Sent: Saturday, August 25, 2007 12:30 AM To: HYPERLINK mailto:Repeater-Builder@yahoogroups.com[EMAIL PROTECTED] Subject: RE: [Repeater-Builder] Duplexers When you put the Bird between the TX and the duplexer, you have changed the length of the jumper cable, which upset the tuning. Adding a wattmeter or any other length of cable between the transmitter and the duplexer Tx input port has no effect on the tuning of the duplexer. It may change the load Z the transmitter sees, which may make the transmitter happier (or sadder) depending on the resulting Z, but in no way does it alter the tuning of the duplexer itself. Adding or removing cable lengths between the transmitter and duplexer also does not change the VSWR as seen by the transmitter (minimal cable loss effects notwithstanding)-. --- Jeff - Jeff DePolo - HYPERLINK mailto:jd1%40broadsci.com; [EMAIL PROTECTED] Broadcast Sciences LLC, Valley Forge PA v: 610.917.3000 f: 610.917.3030 No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.5.484 / Virus Database: 269.12.6 - Release Date: 8/24/2007 12:00 AM No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.484 / Virus Database
RE: [Repeater-Builder] Need An IFR Service Center
I have called Cardinal for some help in the past and the guy I talked to was great. He went to the shop and took the cover off a monitor like mine and told me what I needed to know. No charge! This type of service is hard dang near impossible to find today. Randy B. -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of n9wys Sent: Wednesday, August 01, 2007 9:43 PM To: Repeater-Builder@yahoogroups.com Subject: RE: [Repeater-Builder] Need An IFR Service Center Sorry for the fat fingers. What I meant to say was: ...they have an excellent reputation here in the Midwest. Mark - N9WYS -Original Message- From: HYPERLINK mailto:Repeater-Builder%40yahoogroups.com[EMAIL PROTECTED] m On Behalf Of n9wys Paul, try here: Cardinal Electronics, Inc. 1631 N. Evergreen Ave. Arlington Heights, IL 60004-3806 Phone: (847) 797-7820 HYPERLINK http://www.cardinalelec.com/http://www.cardinal-elec.com/ I have no pecuniary interest in this company, but do know they have en excellent reputation here it the Midwest. Mark - N9WYS No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.5.476 / Virus Database: 269.11.2/931 - Release Date: 8/1/2007 4:53 PM No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.476 / Virus Database: 269.11.4/936 - Release Date: 8/4/2007 2:42 PM
[Repeater-Builder] GE 100 watt PA final transistors
I just got a quote back from Digitron Electronics on the MRF-247 final transistors for the VHF Mastr II. They want $80.00 EACH!! OUCH I nearly crapped in the chair. They had about 5,000 of them and I would say that is the reason they have so many. Randy KI4BQN No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.476 / Virus Database: 269.10.14/912 - Release Date: 7/22/2007 7:02 PM Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * Your email settings: Individual Email | Traditional * To change settings online go to: http://groups.yahoo.com/group/Repeater-Builder/join (Yahoo! ID required) * To change settings via email: mailto:[EMAIL PROTECTED] mailto:[EMAIL PROTECTED] * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
RE: [Repeater-Builder] GE 100 watt PA final transistors
Scott, From an amateur approach this is how I would describe it. I am just now learning about Mastr IIs. The PA appears to be in 3 stages and can be separated physically into 3 different boards. The first board has 2 transistors (4340P1 4340P2). The first board appears to drive the second board which has one power transistor (4304P4). At the end of the second board I can get 50 watts output power so I figured everything was good to there. The 3rd board has two power transistors that appear to be in parallel. From there it goes into what appears to be a matching network and then on out to coax. The number on the board is PL19D424266G1 Rev B. From what I understand about any 110 watt board will interchange even is the configuration is different. Contact me personally at this email if you wish and many thanks. [EMAIL PROTECTED] Randy W4CPT -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Scott Zimmerman Sent: Monday, July 23, 2007 3:31 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] GE 100 watt PA final transistors Randy, Since you have been struggling with this for a while now, tell me what style VHF PA you currently have (the 3 or 4 transistor final) and I can sell you a complete VHF 110W PA known working for MUCH, MUCH cheaper than that. Then all you have to do is some transplanting. Scott Scott Zimmerman Amateur Radio Call N3XCC 612 Barnett Rd Boswell, PA 15531 - Original Message - From: R. K. Brumback [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Monday, July 23, 2007 2:38 PM Subject: [Repeater-Builder] GE 100 watt PA final transistors I just got a quote back from Digitron Electronics on the MRF-247 final transistors for the VHF Mastr II. They want $80.00 EACH!! OUCH I nearly crapped in the chair. They had about 5,000 of them and I would say that is the reason they have so many. Randy KI4BQN No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.476 / Virus Database: 269.10.14/912 - Release Date: 7/22/2007 7:02 PM Yahoo! Groups Links -- No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.5.476 / Virus Database: 269.10.14/912 - Release Date: 7/22/2007 7:02 PM Yahoo! Groups Links No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.5.476 / Virus Database: 269.10.14/912 - Release Date: 7/22/2007 7:02 PM No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.476 / Virus Database: 269.10.14/912 - Release Date: 7/22/2007 7:02 PM Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * Your email settings: Individual Email | Traditional * To change settings online go to: http://groups.yahoo.com/group/Repeater-Builder/join (Yahoo! ID required) * To change settings via email: mailto:[EMAIL PROTECTED] mailto:[EMAIL PROTECTED] * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
RE: {SPAMFILTER} [Repeater-Builder] Need Help identify boards on UHF Mitrek
I believe that is the Time Out Timer or TOT as it is normally called. Used
in some of the Mitrex radios.
Randy B.
-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of ai4sb
Sent: Thursday, November 23, 2006 7:38 PM
To: Repeater-Builder@yahoogroups.com
Subject: {SPAMFILTER} [Repeater-Builder] Need Help identify boards on UHF
Mitrek
Hello thanks for reading
ok, I got 2 boards I need to identify..
one is a HLN4181 *(is this the pl.tone board)
2nd is a HLN4012 A2 (what is this one)
73
thanks
Miguel, ai4sb
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5:41 PM
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RE: {SPAMFILTER} [Repeater-Builder] Need Help identify boards on UHF Mitrek
There is a good article in the files section here on the HLN4181 board.
Randy B.
-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of ai4sb
Sent: Thursday, November 23, 2006 7:38 PM
To: Repeater-Builder@yahoogroups.com
Subject: {SPAMFILTER} [Repeater-Builder] Need Help identify boards on UHF
Mitrek
Hello thanks for reading
ok, I got 2 boards I need to identify..
one is a HLN4181 *(is this the pl.tone board)
2nd is a HLN4012 A2 (what is this one)
73
thanks
Miguel, ai4sb
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Checked by AVG Free Edition.
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5:41 PM
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RE: {SPAMFILTER} [Repeater-Builder] Need Help identify boards on UHF Mitrek
I didn’t provide enough information to you. The 4012 is the TOT board and
yes the 4181 is the tone encoder.
Randy B.
-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of ai4sb
Sent: Thursday, November 23, 2006 7:38 PM
To: Repeater-Builder@yahoogroups.com
Subject: {SPAMFILTER} [Repeater-Builder] Need Help identify boards on UHF
Mitrek
Hello thanks for reading
ok, I got 2 boards I need to identify..
one is a HLN4181 *(is this the pl.tone board)
2nd is a HLN4012 A2 (what is this one)
73
thanks
Miguel, ai4sb
--
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Checked by AVG Free Edition.
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5:41 PM
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5:41 PM
[Repeater-Builder] Paul Holm message virus
Got a message on here from Paul Holm that had a virus. Might want to not open it if you haven’t already. Randy B. YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. -- No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.1.375 / Virus Database: 267.15.2/251 - Release Date: 2/4/2006 -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.375 / Virus Database: 267.15.2/251 - Release Date: 2/4/2006
RE: [Repeater-Builder] tome codes
I think different manufacturers use different codes for different channels. Here is a site that might help. http://www.gmrsweb.com/codetable.html Randy B. -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Maire-Radios Sent: Saturday, December 24, 2005 3:23 PM To: Repeater-Builder@yahoogroups.com Cc: [EMAIL PROTECTED] Subject: [Repeater-Builder] tome codes does anyone have the list of tome codes that are in most family radio's? thank you and have a Merry Christmas john YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. -- No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.1.371 / Virus Database: 267.14.7/214 - Release Date: 12/23/2005 -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.371 / Virus Database: 267.14.7/214 - Release Date: 12/23/2005
[Repeater-Builder] Cushman CE-50 (Sorry for being off topic)
I know is a little off the path but I really need some help with a Cushman CE-50. When the green signal light on the right hand side would not work, I found the two wires, a light green and a white with green stripe, had been cut and left hanging. Also a yellow wire from the deviation switch common post and another yellow wire and a green wire that went on inside the innards somewhere. Not having a service manual or schematic I don’t know what they went to or if a part has been removed. The monitor does not have the spectrum analyzer option. Randy B. YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.371 / Virus Database: 267.14.3/209 - Release Date: 12/21/2005
RE: [Repeater-Builder] GE suitcase programmer TQ2310
Jim, Thanks. I need to get back to work on the suitcase so I will definitely try your suggestion. Randy -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Jim Knox Sent: Thursday, August 25, 2005 8:05 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] GE suitcase programmer TQ2310 Sorry for taking 2 month to reply, I have been busy... move the eprom to another spot, the bottom board will work the best, if it still dose not work, e-mail me at [EMAIL PROTECTED] I can give you a new eprom... JK R. K. Brumback [EMAIL PROTECTED] wrote: I purchased a GE suitcase programmer to use with Phoenix, Delta, and Ranger mobiles. It has a Panasonic handheld computer, I/O module with 6 slide in contact slots, a printer, EPROM and serial board, and a plug in memory module that holds the specific radio programming information. The memory module has about eight or nine open dual-in-line-pin sockets where the burned program chips may be plugged. The computer appears to be ok, but will not report the program storage module as a peripheral. It will report the printer, the EPROM burner pads and the ram of the computer. The program storage module has one program installed for the Phoenix. I have tried cleaning the contacts, placing the module in a different location, and staying at a Holiday Inn Express, but nothing so far. I suppose it is something in one of the chips. Is anyone out there familiar with this module, know of any problems in the past with it, or know a good place to start checking? Thanks for any assistance. Randy B. -- No virus found in this outgoing message. Checked by AVG Anti-Virus. Version: 7.0.323 / Virus Database: 267.6.2 - Release Date: 6/4/2005 Jim Knox N5NWC Start your day with Yahoo! - make it your home page YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. -- No virus found in this incoming message. Checked by AVG Anti-Virus. Version: 7.0.338 / Virus Database: 267.10.15/81 - Release Date: 8/24/2005 -- No virus found in this outgoing message. Checked by AVG Anti-Virus. Version: 7.0.338 / Virus Database: 267.10.15/81 - Release Date: 8/24/2005
[Repeater-Builder] Using 2 GE Rangers for repeater
Does anyone have the step by step on hooking up two rangers for repeater use? Also, can you recommend a controller! I am also looking for the service manual for the VHF and the UHF version. Randy YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. -- No virus found in this outgoing message. Checked by AVG Anti-Virus. Version: 7.0.338 / Virus Database: 267.10.13/78 - Release Date: 8/19/2005
[Repeater-Builder] Cushman CE-50A
I need a manual for the Cushman CE-50A. A good photo-copy would be fine as long as it sings the song. Thanks. [EMAIL PROTECTED] YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. -- No virus found in this outgoing message. Checked by AVG Anti-Virus. Version: 7.0.338 / Virus Database: 267.9.7/60 - Release Date: 7/28/2005
RE: [Repeater-Builder] GE suitcase programmer TQ2310
Tedd, All IC's are in place and soldered as you mentioned. All appears to be as factory and I cannot see anything that looks like it has been monkeyed with. I hope to be able to take a closer look at it tomorrow and maybe check some voltage points, connections, wires and such. Randy B. -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Tedd Doda Sent: Wednesday, June 08, 2005 4:31 PM To: Repeater-Builder@yahoogroups.com Subject: RE: [Repeater-Builder] GE suitcase programmer TQ2310 On Tue, 7 Jun 2005 12:25:15 -0400, R. K. Brumback wrote: Randy: No, all the other support chips are not installed. It only has the Phoenix chip. By support chips, I mean the other IC's within the module itself. Along with the personality EPROM's, there are 14 or 15 other IC, mostly on the first board (the one with the edge connector). Make sure that they are all in place. I haven't had mine apart in years, but they should all be soldered in, as in NOT socketed. I will have to try and get a burned copy for the Delta and Rangers. I am trying to get as much information as I can before I set it down on the bench. Do you know of anyone close to you with a 2310 that would let you try your storage module in their machine? There might be nothing wrong with it? First thing to get is the COMPLETE operators manual for the 2310. This give you the breakdown of all the modules. Without the manual, making repairs is difficult at best. Tedd Doda, VE3TJD Lazer Audio and Electronics Baden, Ontario, Canada Yahoo! Groups Links -- No virus found in this incoming message. Checked by AVG Anti-Virus. Version: 7.0.323 / Virus Database: 267.6.6 - Release Date: 6/8/2005 -- No virus found in this outgoing message. Checked by AVG Anti-Virus. Version: 7.0.323 / Virus Database: 267.6.6 - Release Date: 6/8/2005 Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
RE: [Repeater-Builder] GE suitcase programmer TQ2310
Hi Tedd and thanks for your reply. No, all the other support chips are not installed. It only has the Phoenix chip. I will have to try and get a burned copy for the Delta and Rangers. I am trying to get as much information as I can before I set it down on the bench. Randy Hi Randy: First thing to check is the ribbon cables joining the three boards together. I bought a 2310 as a spare a couple years ago, and found more than half of the wires were broken. These modules are designed to be taken apart for eprom swapping but due to their age, the wires work harden then break. Are all the other support chips installed? Tedd Doda, VE3TJD Lazer Audio and Electronics Baden, Ontario, Canada Yahoo! Groups Links -- No virus found in this incoming message. Checked by AVG Anti-Virus. Version: 7.0.323 / Virus Database: 267.6.4 - Release Date: 6/6/2005 -- No virus found in this outgoing message. Checked by AVG Anti-Virus. Version: 7.0.323 / Virus Database: 267.6.5 - Release Date: 6/7/2005 Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[Repeater-Builder] GE suitcase programmer TQ2310
I purchased a GE suitcase programmer to use with Phoenix, Delta, and Ranger mobiles. It has a Panasonic handheld computer, I/O module with 6 slide in contact slots, a printer, EPROM and serial board, and a plug in memory module that holds the specific radio programming information. The memory module has about eight or nine open dual-in-line-pin sockets where the burned program chips may be plugged. The computer appears to be ok, but will not report the program storage module as a peripheral. It will report the printer, the EPROM burner pads and the ram of the computer. The program storage module has one program installed for the Phoenix. I have tried cleaning the contacts, placing the module in a different location, and staying at a Holiday Inn Express, but nothing so far. I suppose it is something in one of the chips. Is anyone out there familiar with this module, know of any problems in the past with it, or know a good place to start checking? Thanks for any assistance. Randy B. Yahoo! Groups Links To visit your group on the web, go to:http://groups.yahoo.com/group/Repeater-Builder/ To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. -- No virus found in this outgoing message. Checked by AVG Anti-Virus. Version: 7.0.323 / Virus Database: 267.6.2 - Release Date: 6/4/2005
