[Repeater-Builder] Re: DB-304DL antenna
Nate and group, Sorry, a 304 has 8, a DB-228 still only has 8 elements and is basically two The tech's at DB Products said that they did make a DB-304DL. The DL stands for double arrays. And it has 16 dipoles. They just don't have any infomation on it anymore. DB-224's (4 dipoles) stacked vertically. The 304 looks a little like a DB-410 in that the dipoles are opposite each other still on a 20 something foot mast. The DB-228 still has 8 elements but spread out on a 40 something foot mast. They both have their places, I don't think DB makes the 304 any longer, too bad. DB quit making the 304 in the 70's. I posted a picture in the photo section of this group of the one that I have. It is a E model In my paging days a DB-304 had a lot better lobe straight down and would cover tall buildings in a single bound where a 224 seemed to have a null right under the antenna. The designers of the 304 antenna never understood that one. I put a DB-228 up for a customer a couple years ago, they said they talked places where they never have and are very happy compared to the old antenna. I am planning on putting one on my tower as the receive antenna since a new customer is coming on with a high band system. It will help my Ham systems also! Paul
[Repeater-Builder] Propagation Software
Is there someone with a good VHF/UHF propagation software progam on their computer who wouldn't mind running a plot for me? I can't seem to get Radio Mobile Deluxe to run properly on my PC. I have coordinates and all other particulars for a proposed repeater site; just need someone to run a plot and send me a JPEG file back. Please send private e-mail if you could help. Location is northern NJ. Thanks.
[Repeater-Builder] need a Syntor X Low band manual...
Anybody have a syntor X low band service manual that they would be willing to part with? Can pay you with paypal.. dave, NA6DF
Re: [Repeater-Builder] Propagation Software
I'll bite, send me your Lat, Long, Tower heigt, Transmitter power, feedline loss and antenna gain. On 1/18/07, Tony L. [EMAIL PROTECTED] wrote: Is there someone with a good VHF/UHF propagation software progam on their computer who wouldn't mind running a plot for me? I can't seem to get Radio Mobile Deluxe to run properly on my PC. I have coordinates and all other particulars for a proposed repeater site; just need someone to run a plot and send me a JPEG file back. Please send private e-mail if you could help. Location is northern NJ. Thanks. Yahoo! Groups Links
[Repeater-Builder] Re: Mot. IC cross reference
--- In Repeater-Builder@yahoogroups.com, Tedd Doda [EMAIL PROTECTED] wrote: On Thu, 18 Jan 2007 05:52:15 -, wa9zzu wrote: The IC's came from K9MDM's wharehouse liquidation sale last November and I have no idea where they were used. The parts are 8 pin DIP with the no. 61L23 marked and mfg'd by RCA. I've tried connections using the generic 741 dual op amp and was unable to get any voltage or signal out. I'm stumped. HI Allan: Maybe you can tell us what you are trying to do? You have an UNKNOWN IC on an UNKNOWN board...right? Are trying to salvage parts or what? Tedd Doda, VE3TJD Lazer Audio and Electronics Baden, Ontario, Canada www.ve3tjd.com (personal) www.eraradio.ca (Linked repeater system) Tedd: I have a bag of unknown ID's I'm trying to ID before I decide to throw them in the trash. wa9zzu
RE: [Repeater-Builder] Re: Mot. IC cross reference
Tedd, Check out this Google search, http://www.alldatasheet.com/view.jsp?Searchword=61L23 . It should have all you need, if not there is a lot of other sites ID'ing the chips. Paul -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of wa9zzu Sent: Thursday, January 18, 2007 12:20 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Re: Mot. IC cross reference --- In Repeater-Builder@yahoogroups.com, Tedd Doda [EMAIL PROTECTED] wrote: On Thu, 18 Jan 2007 05:52:15 -, wa9zzu wrote: The IC's came from K9MDM's wharehouse liquidation sale last November and I have no idea where they were used. The parts are 8 pin DIP with the no. 61L23 marked and mfg'd by RCA. I've tried connections using the generic 741 dual op amp and was unable to get any voltage or signal out. I'm stumped. HI Allan: Maybe you can tell us what you are trying to do? You have an UNKNOWN IC on an UNKNOWN board...right? Are trying to salvage parts or what? Tedd Doda, VE3TJD Lazer Audio and Electronics Baden, Ontario, Canada www.ve3tjd.com (personal) www.eraradio.ca (Linked repeater system) Tedd: I have a bag of unknown ID's I'm trying to ID before I decide to throw them in the trash. wa9zzu Yahoo! Groups Links p class=style1Visit a href=http://www.ourphoneList.com;OurPhonelist.com/a/p p class=style1It's free and you'll never lose track of a phone number again! /p -- No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.5.432 / Virus Database: 268.16.14/636 - Release Date: 1/18/2007 4:00 AM -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.432 / Virus Database: 268.16.14/636 - Release Date: 1/18/2007 4:00 AM p class=style1Visit a href=http://www.ourphoneList.com;OurPhonelist.com/a/p p class=style1It's free and you'll never lose track of a phone number again! /p
Re: [Repeater-Builder] Propagation Software
Addendum to my offer... I'll only do it for an amateur radio application. so include repeater callsign. (I do this for a living, anything commercial would be a conflict of interest) Tony L. [EMAIL PROTECTED] wrote: Is there someone with a good VHF/UHF propagation software progam on their computer who wouldn't mind running a plot for me? I can't seem to get Radio Mobile Deluxe to run properly on my PC. I have coordinates and all other particulars for a proposed repeater site; just need someone to run a plot and send me a JPEG file back. Please send private e-mail if you could help. Location is northern NJ. Thanks. - Sucker-punch spam with award-winning protection. Try the free Yahoo! Mail Beta.
Re: [Repeater-Builder] Propagation Software
I can do it too, but will be sometime this weekend when I can do it. I'm using comstudy, I'll need the following: Lat/lon freq antenna model gain antenna height feedline type length losses (cavities, duplexer, etc...) mode if not FM 25k that should get you a decent plot for the money Tony L. [EMAIL PROTECTED] wrote: Is there someone with a good VHF/UHF propagation software progam on their computer who wouldn't mind running a plot for me? I can't seem to get Radio Mobile Deluxe to run properly on my PC. I have coordinates and all other particulars for a proposed repeater site; just need someone to run a plot and send me a JPEG file back. Please send private e-mail if you could help. Location is northern NJ. Thanks. - Expecting? Get great news right away with email Auto-Check. Try the Yahoo! Mail Beta.
[Repeater-Builder] WTD: Burned up R1225 Power Amp
I need a burned up or burned out 30-50 watt PA from a R1225 repeater chassis. VHF or UHF does not matter. More fire in the PA the better.. Thanks for your help
Re: [Repeater-Builder] Re: Power Supplies going up in smoke (non filtered)
Hi guys I have bought a number of the Lambda modules at fleamarkets usually for a dollar each or so. There are two sizes, a low power one designed to fit onto the 5-7 amp supplies and a high power one designed for the 24+ Amp supplies. The differences are mainly in the size of the SCR. I have the datasheet including schematic for the Lambda OVP adjustable modules. If you want a scan or pdf, I could probably supply it for the files. Burt VE2BMQ skipp025 wrote: [EMAIL PROTECTED] wrote: Unfortunately, I got a reply from Samlex saying the OVP is of a feedback type, not a crowbar, which explains Jeff's experience with the SEC-1212. Not so good... A long time ago I happened to find a crowbar bar made by Lambda at the local TRW swap meet. I added it to a supply without built-in OVP to add said protection to the equipment. I have seen a number of small crow-bar pc daughter boards tacked onto various Power One (a brand name) type power supplies. They are easily copied or even lifted off the original supply for use in other locations. I wonder if similar devices are commonly available somewhere? They are but nothing comes to mind right away... You might check with Kitsrus, Jameco, Electronics Rainbow, Marlin P. Jones and a few other kit mfgr/retailers to see what they offer. If not I can and would share some of my notes if you want to roll your own. That a fuse on the output of an SEC-1223 I think I'd feel comfy using it at one of my sites. Bob NO6B The key points are location, function size. Where will the crowbar be placed? What will the crowbar do to everything on the dc bus at a fault condition? What happens after the fault condition goes away and or remains? Does the crow-bar device/circuit have a large enough capacity. Astron designed their crowbar circuit to short the supply output. The shorted output protects the user equipment and tries to force the AC Mains fuse to open through excessive transformer primary current draw. The bad news is found when modest size power supply - ac mains fuses are replaced with excessive large current values (the trusty 25 or 30 amp 3ag fuse everyone seems to have a lot of...). Not enough current draw through the faulted secondary side of the supply to open the wrong size installed ac mains fuse. Somethings got to give... and it's often very hot when it does. cheers, s.
[Repeater-Builder] syntorX control head schematic? (clamshell type)
Looking for a schematic for the HCN1022A or HCN1023A clamshell type control heads. These are the ones with the A/B or R/D switch on them. Should be in any band of syntorX manual (I hope) If any one can help with a scan of it, it would be greatly appreciated.
[Repeater-Builder] Re: DB-304DL antenna
--- In Repeater-Builder@yahoogroups.com, Kevin Thomas [EMAIL PROTECTED] wrote: The tech's at DB Products said that they did make a DB-304DL. The DL stands for double arrays. And it has 16 dipoles. They just don't have any infomation on it anymore. Kevin, not sure what you have there--your description and the photo posted on the group do not match the picture and description that I have in the DB catalog. Is the antenna in question on the ground, or is it the one in the posted picture? If the posted one, have you been up there to look at the nameplate(s) to actually read the numbers? Something does not match here If interested, I will get the page I have scanned or copied and sent to you. Laryn K8TVZ
RE: [Repeater-Builder] Re: Power Supplies going up in smoke (non filtered)
Jeff, Right you are! The Square D circuit breakers found in home improvement stores are the common QO or Homeline variety, which have a fast magnetic trip action. Commercial electrical supply houses either stock or can get on short notice the QO-HM (plug-in) or QOB-HM (bolt-on) circuit breakers with the high magnetic action. Large-frame breakers in the 100 to 1600 ampere class usually have adjustable delay and trip points. Here's the blurb from the Square D catalog: QO-HM and QOB-HM high-magnetic circuit breakers are recommended for area lighting (athletic fields, parking lots, outdoor signs, etc.) when using lamps of inherent high inrush current, individual dimmer applications, or other applications where high inrush current exceeds standard tripping conditions. These circuit breakers are available in one-pole 15 and 20 amperes only. QO-HM and QOB-HM circuit breakers are physically interchangeable with standard QO and QOB circuit breakers and accommodate the complete range of QO accessories. I am amazed that commercial and cellular site owners and operators are too often unaware of the high inrush currents drawn by large power supplies at startup. Depending upon where in the AC cycle the switch is closed, a typical transformer-input power supply can draw well over 100 amperes for an instant. A lot of electricians who should know better are not aware of special application circuit breakers, and routinely install the standard breakers on every job. 73, Eric Lemmon WB6FLY -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Jeff DePolo Sent: Wednesday, January 17, 2007 6:52 PM To: Repeater-Builder@yahoogroups.com Subject: RE: [Repeater-Builder] Re: Power Supplies going up in smoke (non filtered) Even the common plug-in circuit breakers made by Square D, Cutler-Hammer, and others are available in high-inrush versions- but you won't find them at Home Depot. Yeah, I know. I've always heard them called hi-mags, meaning higher magnetic (current) trip point as compared to standard breakers, yet still have the same thermal trip point for longer-term protection. I seem to recall larger industrial breakers having a built-in delay for inrush current trip protection. You're the power guy, you tell me :-) snip --- Jeff
Re: [Repeater-Builder] Re: Power Supplies going up in smoke (non filtered)
At 1/19/2007 14:12, you wrote: Hi guys I have bought a number of the Lambda modules at fleamarkets usually for a dollar each or so. There are two sizes, a low power one designed to fit onto the 5-7 amp supplies and a high power one designed for the 24+ Amp supplies. The differences are mainly in the size of the SCR. I have the datasheet including schematic for the Lambda OVP adjustable modules. If you want a scan or pdf, I could probably supply it for the files. Burt VE2BMQ Yes, I'd like to see what Lambda uses in their OVP modules; thanks. Bob NO6B
[Repeater-Builder] Re: Ritron RR-454 Manual Scan
--- In Repeater-Builder@yahoogroups.com, Steven Samuel Bosshard \(NU5D\) [EMAIL PROTECTED] wrote: www.bosshardradio.com/RR454.pdf 73, Steve Ham Radio Spoken Here...NU5D EM11 Visit the Temple ARC Website: http://www.tarc.org Thank you very much 73 Jack KR9Q
Re: [Repeater-Builder] Re: DB-304DL antenna
Yes, It is the one in the picture. I took it down several years ago in Shreveport. And installed it on my tower. There where no name tags left. Apparently the mounting brackets have messed them up. but it is split in half and has a factory phasing harness between them. That momma is about 43 feet long. I have never seen another one. So I was just trying to find out some info on it.. If you could send me a copy of that. I would greatly appreciate it. W5KGT Kevin Thomas Calhoun, La. www.w5kgt.com - Original Message From: Laryn Lohman [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Thursday, January 18, 2007 8:31:43 PM Subject: [Repeater-Builder] Re: DB-304DL antenna --- In Repeater-Builder@ yahoogroups. com, Kevin Thomas [EMAIL PROTECTED] wrote: The tech's at DB Products said that they did make a DB-304DL. The DL stands for double arrays. And it has 16 dipoles. They just don't have any infomation on it anymore. Kevin, not sure what you have there--your description and the photo posted on the group do not match the picture and description that I have in the DB catalog. Is the antenna in question on the ground, or is it the one in the posted picture? If the posted one, have you been up there to look at the nameplate(s) to actually read the numbers? Something does not match here If interested, I will get the page I have scanned or copied and sent to you. Laryn K8TVZ Food fight? Enjoy some healthy debate in the Yahoo! Answers Food Drink QA. http://answers.yahoo.com/dir/?link=listsid=396545367
[Repeater-Builder] COS output for Kenwood
I have a TM-431A which I want to use as a half-duplex link. I can easily get audio in and output, but I'm stumped on how to get a voltage change when the squelch opens for COS (Carrier-operated-squelch) Ideally I'd like a voltage that swings only when the CTCSS is detected as well as squelch open, but I'd settle for one that is just the squelch. My controller is an ICS linker. Does anyone know the proper point to connect to, or does anyone have a service manual for this unit? Thanks, Jeff WB0LRX
[Repeater-Builder] Re: DB-304DL antenna
Laryn, That's what I got from the DB tech's. I was told from the club I got this from. That it was a custom order from DB Products. It has the DB split connectors between each antenna. And a phasing harness about 5 foot long for the feedline connection. I've had this antenna about four years. The tower is 195' and the antenna has a 1.3-1 SWR. seems to be working great. I am putting together a binder with all my repeater equipment infomation. Was just hoping someone might have some infomation I could put in the binder. I have a copy of the catalog page. Hmmm I have the DB304 info in my old DB catalog. What it shows is the L version, which places all dipoles in line with each other. And the D version, which basically splits the DB304 into two, with separate feedlines, and 3.2dbd gain each. The DB304 is rated at 6.1 or 6.7dbd gain, depending on whether the dipoles are in line or at 90deg with each other. So, I'm not sure why you have a DB304DL with 16 dipoles, 8 levels I assume. The gain figures and the picture in the catalog I have both indicate an antenna with 4 levels, each level having two dipoles side by side, like a DB408. Could you have two 304DLs on one long mast? Check the model number again, and check for more than one feedline on there somewhere. Laryn K8TVZ
Re: [Repeater-Builder] syntorX control head schematic? (clamshell type)
On Fri, 19 Jan 2007, na6df wrote: Looking for a schematic for the HCN1022A or HCN1023A clamshell type control heads. These are the ones with the A/B or R/D switch on them. Should be in any band of syntorX manual (I hope) If any one can help with a scan of it, it would be greatly appreciated. Clamshell control heads are by far the simplest to work with. http://www.batlabs.com/syntor.html http://www.open.org/blenderm/syntorx/ You should look in those two places first. -- Kris Kirby [EMAIL PROTECTED] The illegal we do immediately. The unconstitutional takes a bit longer.-- Henry Kissinger
[Repeater-Builder] Re: Mot. IC cross reference
What are the other numbers and letters on these IC's? That mite help narrow it down to an age range. Then we can check our older parts books.---
