RE: [Repeater-Builder] OT - Triplett 310
Mike, Pin plugs appear to be .080 in diameter and miniature banana plugs are .090 in diameter at the Pomona Electronics web site http://www.pomonaelectronics.com/index.php?i=prodmain http://www.pomonaelectronics.com/index.php?i=prodmaingetDetails=0parent=H WARE getDetails=0parent=HWARE I could be wrong, but I found this at Pomona web site: http://www.pomonaelectronics.com/pdf/D5936.pdf and http://www.pomonaelectronics.com/pdf/d3548_1_01.pdf Browse around as they may have what you really need. _ From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Mike Morris Sent: Wednesday, June 02, 2010 12:38 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] OT - Triplett 310 Anybody know what they call the size of plugs that go into a Triplett 310 meter? See the photo at http://www.repeater-builder.com/wa6ilq/triplett-310.jpg The jacks are smaller than a bananna plug and bigger than a pin plug. I'd really like to find a set - this is too nice a meter to leave in a desk drawer only becasue there are no probes. If I can make it usable it will go great in my go-bag. Mike WA6ILQ
RE: [Repeater-Builder] Racom Station Identifier
I see that your IDer is a model 1300 and mine are model 700, however, I received this reply from one of Racom's people that may be helpful with reprogramming any of Racom's IDers: Snip. Good Afternoon Jim: Thank you for the e-mail and your interests in Racom Products. Generally speaking all of the model 700's can be reprogrammed in the field via a PC. However, over the years the circuit boards used in the 700's have changed. Which means a programming kit for one unit might not work on another. If you would remove the lid of each unit and send me the board number its PROM number I can match up the programming kits ( disk and cable ) needed and match up the correct Service Manuals for each. Or, you could send them to us and we can reprogram all of them. Basically, the cost of a programming kit is: $24.00, factory pro- gramming is: $19.000 and a Service Manual is $10.00, plus the cost of shipping, handling and insurance. If you have any questions please give me a call, thanks again and have a good day. Sincerely, John M. Dukovich j...@racominc.com Racom Products 800-722-6664 www.racominc.com 2024 West Schaaf Road Cleveland, Ohio 44109 USA .Snip 73, Jim _ From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of mzfb2001 Sent: Sunday, May 23, 2010 2:07 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Racom Station Identifier Hi all I have a Racom 1300 morse code station Identifier. I am looking to see if there is a way to reprogram the Prom in the unit. The company is no longer active. The prom contains the call sign information. I know I could throw it in the trash and buy something new but I hate doing that when all it would take is to reprogram the Prom. Is there a way to read the prom and then change the information in it and then program a new prom provided I can find a new one. Thanks in advance Mike
RE: [Repeater-Builder] Zetron Model 19 needed
Just in case you can't find a Zetron 19, take a look at this simplex repeater controller. I've seen a demonstration on this one and it seems to work very well. It sells for about $90. http://www.argentdata.com/products/repeater.html https://www.argentdata.com/catalog/index.php?cPath=27 https://www.argentdata.com/catalog/index.php?cPath=27osCsid=9764ae4dddb41f 2793ecef08c608ab71 osCsid=9764ae4dddb41f2793ecef08c608ab71 Jim _ From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of KD8BIW Sent: Wednesday, January 27, 2010 11:21 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Zetron Model 19 needed I'm in need of a Zetron Model 19 Simplexor store and forward for VOICE. Please email direct with price and shipping. Thanks!
RE: [Repeater-Builder] Re: Helper Instruments Sinadder Model CML-1
Bruce and Skipp and group, This discussion made me look in the file cabinet and I found the entire package (instruction manuals, schematics, etc.) for my Sinadder CML-1. The manual is actually for the Linear-5 meter, with an inserted Addendum for the CML-1. I also have a few advertisement sheets and an interesting application note that shows how to make a SINAD measurement. I am too busy over the holiday, but in early December will make a scan for the Repeater Builder library. I will mention this to Eric and he might have a better way to get this out. Jim _ From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of skipp025 Sent: Monday, November 23, 2009 9:03 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Re: Helper Instruments Sinadder Model CML-1 El gusto es mio Bruce... I'm a big fan of Helper Instruments and have a small bit of history regarding the Company. When the founder passed, his daughter tried to keep the ship floating but the original innovation of Helper Products was gone. Eventually... Zetron bought the rights to produce some Helper Products, but those were discontinued when the Radio Service and Repair Market all but dried up. You might check the Zetron site or drop their technical support a note asking if they might have the manual/diagram for that instrument. I might have the manual to the plain-jane sinad meter... the operation is the same but again the C Msg filter is a nice option to have if you need it/one. cheers, skipp [pasted text] Thanks Skipp, for starting me off in the right direction. I've found some interesting reading. My meter arrived and I'm starting to get used to it. Nothing in that specific Model (CML-1) yet, but hopefully I will find that also. 73, Bruce skipp025 wrote: C Weighting Filter, do a google search to find: http://en.wikipedia http://en.wikipedia.org/wiki/Weighting_filter .org/wiki/Weighting_filter It's an audio filter option... nice to have if you need it. s. ve1ii bhar...@... wrote: Hi, could anyone give me some information on what the C MSG feature is for on a Sinadder Model CML-1. There is an on off switch on the front panel for this but I don't know what it is for. Also, if anyone has a file for this particular Sinadder I would sure appreciate obtaining a copy. I think it is basically a Sinadder 3 but am not sure of any differences in it. 73, Bruce, VE1II
RE: [Repeater-Builder] Power Connectors - spectras/GM/Maxtrac/...
Try this link for SAE CONNECTORS, 12 gauge and various lengths. http://www.solarseller.com/low_voltage_dc_pumps__lvm__teel__accessories__plu gs_and_extensions.htm _ From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of n4...@bellsouth.net Sent: Sunday, November 15, 2009 5:04 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Power Connectors - spectras/GM/Maxtrac/... Try tower. www.pl259.com Sent on the SprintR Now Network from my BlackBerryR _ From: tahrens301 tahr...@swtexas.net Date: Mon, 16 Nov 2009 00:48:54 - To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Power Connectors - spectras/GM/Maxtrac/... Hi Folks, I'm looking for some power connectors for the above types of radios. I don't need much more than pigtails, as I am doing a special cabling project. I've looked at both Mouser Digikey, but they don't seem to carry anything similar. I have seen 'generic' types before... somewhere! If anybody has some ideas, please let me know. I need about 20 of them. Thanks, Tim
[Repeater-Builder] FS - duplexers, isolators, power amps, etc @ TRW Swap Meet - 25 July
Reminder about TRW Swap Meet tomorrow morning, 25 July. (The Micor stuff is sold. All that remains is one PA, TLD1693, 150-160 MHz range, 100 watts continuous duty.) The following will be available: Duplexers: 1. Sinclair, (2 ea) - Q202GR -pass/notch, 7 inch cavities, 19 inch rack mounting (no cabinet), VHF low split custom harness RG-142 - 14 inches on center, $450 2. Motorola, UHF, T1504 series, pass-notch, $200 3. There will be more duplexers, next swap meet later in the year Circulator-Isolators: 1. Sinclair, (3 ea) - model T2210T, 2 stages, 138-174 MHz, with adjustable harmonic filter and loads, $100 Mobile power amps: 1. 406-420 MHz, Motorola, 3 watts in 30 watts out 2. 150 MHz, Motorola, 3 watts in 40 watts out 3. 450 MHz, Trilectric, 20 watts in 100 watts out 1. 150 MHz, GE, 4 in 40 out (I think, without looking it up.) Older test equipment: 1. Vintage, Measurements 80 signal generator, with manual, spare oscillator tubes 2. Heathkit Deviation Meter, with manual 3. Tektronix Spectrum Analyzers (2 ea, both for parts) 4. BYTEK-125, Gang PROM burner and BYTEK bulk UV eraser light box, with manual 5. Micronata (Radio Shack) VSWR meter HF: 1. Kenwood TS-430 No shipping, but might deliver in So. California area after swap meet, easier to meet up at TRW Please reply off list. The TRW Swap Meet is held on the last Saturday of each month 7am to 11:30am. The TRW Swap Meet is located on the SE corner of Marine and Aviation Avenues in the city of Redondo Beach, CA. For on-the-air directions talk in on W6TRW repeater 145.320 - (PL 114.8) Look for Grey Chevy 4X4 Pickup. 73, Jim, WA6VPL
[Repeater-Builder] FS - duplexers, isolators, power amps, etc @ TRW Swap Meet - 25 July
On our twice per year trip to TRW the following will be available: Duplexers: 1. Sinclair, (2 ea) - Q202GR -pass/notch, 7 inch cavities, 19 inch rack mounting (no cabinet), VHF low split custom harness RG-142 - 14 inches on center, $450 2. Motorola, UHF, T1500 series, pass-notch, $200 3. There will be more duplexers, next swap meet later in the year Circulator-Isolators: 1. Sinclair, (3 ea) - model T2210T, 2 stages, 138-174 MHz, with harmonic filter and loads Base Stations: Motorola Micor VHF Low Split Base Station (will bring along if anyone responds via e-mail and wants one) - $200 each OBO -Very clean, no Cabinets, just the above listed in a unified chassis and PA in separate chassis The module assembly numbers for the VHF Micor base radios I have are as follows: PA: TLD1692D1 (100 watt, continuous duty, 132-150) Exciter: TLD5802B (132-150, with PL encoder) Receiver: TLD5781AV (132-142, with pre-amp and PL decoder) Power Supply Next swap meet later in year: 1. Base Stations in cabinet, GE MASTR 2, UHF, 100 watt, quantity - 2 or 3 2. Mobiles, GE MASTR 2, 420 MHz, quantity unknown 3. Mobiles, Motorola Mitrek, 420, quantity 2 or 3 Mobile power amps: 1. 406-420 MHz, Motorola, 3 watts in 30 watts out 2. 150 MHz, Motorola, 3 watts in 40 watts out 3. 450 MHz, Trilectric, 20 watts in 100 watts out Older test equipment: 1. Vintage, Measurements 80 signal generator, with manual 2. Heathkit Deviation Meter, with manual 3. Tektronix Spectrum Analyzers (2 ea, both for parts) 4. BYTEK S125, Gang PROM burner and BYTEK bulk UV eraser light box, with manual 5. Micronata (Radio Shack) VSWR meter HF: 1. Kenwood TS-430 +++ No shipping, but might deliver in So. California area after swap meet, easier to meet up at TRW Please reply off list. The TRW Swap Meet is held on the last Saturday of each month 7am to 11:30am. The TRW Swap Meet is located on the SE corner of Marine and Aviation Avenues in the city of Redondo Beach. For on-the-air directions talk in on W6TRW repeater 145.320 - (PL 114.8) Look for Grey Chevy 4X4 Pickup. 73, Jim, WA6VPL
RE: [Repeater-Builder] Another War Story (from the front lines) Those Tricky CTCSS Boards.
Skipp, I once fixed the same problem by soldering (on the back side of the board) a 1/8 Watt resistor of about 47K Ohms to provide an external pull up. Unless there is something else wrong inside the chip this should work. I think I just got lucky with a midnight fix. Jim _ From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of skipp025 Sent: Tuesday, June 23, 2009 10:57 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Another War Story (from the front lines) Those Tricky CTCSS Boards. Re: Another War Story (from the front lines) Those Tricky CTCSS Boards. The Smoking Lamp is now Lit... Smoke'em if you've got'em. For the fun of building repeater gear... In what little spare time I have (as of late) I had formed an informal assembly line to manufacture a number of 224 MHz Repeaters as described in recent group posts. These Repeaters are constructed using Hamtronics Exciter and Receiver Modules mounted in an aluminum box (with a center divider shield) with an old (now out of production) Comm Spec TS-32 CTCSS (PL) Board. http://groups. http://groups.yahoo.com/group/Repeater-Builder/photos/album/1157128983/pic/ list yahoo.com/group/Repeater-Builder/photos/album/1157128983/pic/list I've just added a fair number of new pictures including Repeater Number 2 and 3 already out the door. You'll see very minor differences in each version. Regardless of what some people might have said about the Hamtronics Boards, these units do perform really well and are fairly priced. I bought a number of used Comm Spec TS-32 CTCSS Encoder Decoder modules to use, one for each repeater. Since these repeaters take off and play pretty well right out of the starting gate Yes I got a bit lazy in regards to pre-testing of the various modules before final assembly. Well... I was almost bit by a glitch from a used TS-32 CTCSS board. I do pre-test the boards... figuring they're probably good if a quick on the bench test sees a CTCSS tone coming out of the encoder portion/section. One might assume all is well among common parts within the same circuit? Finish up the repeater, set the CTCSS tone (via the top mounted dip switch) and start down the level alignment trail of happy times after wiring the controller pig tail (connection lead). The TS-32 is mounted with double sided tape and RTV Silicon Glue as the tape eventually hardens and loses its grip on the board. I route a wire from the TS-32 Encoder output pin, through a chassis feed-through capacitor (as seen in the pictures) to the exciter to provide Transmit CTCSS encoding. Transmit CTCSS is a nice feature and very easy to include when using the TS-32 Board. I set the Tx level about 400 Hz Tx Deviation (because in the real world it really doesn't need to be more than that) and moved on to a function check... darn it no CTCSS Decode Logic indicated on the external controller. I was not looking forward to removing the already secured and wired TS-32 from the chassis. Out with a Scope Probe to try some initial testing before a board removal is required. The TS-32 docs are very good and there are signal wave form pictures at various stages of the circuit paths. Everything looked OK with minor difference with the exception of what appeared in the TS-32 decoder detector section. Quite the head scratcher... a non matched decode situation. Sometimes a change will do you good and in this case trouble shooting a low frequency audio circuit at a higher frequency might help ferret out a pesky problem. So I reset the TS-32 dip switches and the Service Monitor for the highest possible CTCSS tone frequency. Well looky here... Now I've got a nice bright LED on the Repeater Controller indicating a decoded CTCSS tone? Sure enough a few repeated decode tests toggled with the Service Monitor and I've got happy times. Dip switches can become intermittent so I figured one of them wasn't making good connection. I reset the desired 127.3 Hz tone and the logic once again failed to toggle. One can place a multimeter set on dc volts upon the main TS-32 IC Chip (proper pins of... ) to measure the tone selection logic as you cycle the dip switches on and off. Through a process of elimination I found the center dip switch logic was not rising high with the corresponding proper switch movement, but it was slightly changing value. The key point here is the logic line was not rising enough, which would lead some to believe the normally expected present logic pull-up resistor is bad or not at home. But there are no pull-up resistors shown on the circuit diagram. That function is provided internal to the custom TS-32 logic chip. Can the chip be partially failed on the center number 3 logic address line? Swapping is simple in the right situation... So I swapped the IC over from my last known good TS-32 and the entire range decode function
RE: [Repeater-Builder] RE: TASMA makes a move to take over coordinating responsibilities for the 440 band
Eric, I think you are referring to the differences between northern and southern California 440 coordination administered by SCRRBA and NARCC. The northern coordinator is NARCC (Northern Amateur Relay Council of California - http://www.narcc.org/). Northern CA is low output and southern CA is high output. Not only does this issue exist, there is the southern 20 kHz channel steps versus the northern 25 kHz channel steps to contend with. Someday there may be a uniform 440 band plan for this region of the U.S. Jim _ From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Eric Lemmon Sent: Monday, May 04, 2009 5:47 PM To: repeaterownersassociat...@googlegroups.com Cc: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] RE: TASMA makes a move to take over coordinating responsibilities for the 440 band This could get real interesting, real fast, since the big difference between SCRRBA and TASMA band plans is whether the 70cm repeater inputs should be above or below the outputs. They are opposite polarities! 73, Eric Lemmon WB6FLY
RE: [Repeater-Builder] Re: Sinclair Q2220E
Is it possible to provide any more details in regard to the mod you made? Thanks, Jim _ From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of n3dab Sent: Monday, March 23, 2009 12:45 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Re: Sinclair Q2220E Yes, but we modified/replaced the loops in the cavities to get better performance. No changes were made to the harness as I recall. I don't recall the Pass/Rejectfigures at the moment (but they were comparable to other 4 cavity 2 mtr. duplexersor slightly better, but the duplexer has been operating on the K4SLB 2 mtr. rptr. in Kissimmee Fl for the last year and a half. You'll need access to a service monitor with a tracking generator at least to make the mod. It's a reasonably simple mod. and all that was required was some #14 Ga. bare copper wire, a soldering iron and your time and access to the SM. Other may have different ideas or suggestions. Doug N3DAB --- In Repeater-Builder@ mailto:Repeater-Builder%40yahoogroups.com yahoogroups.com, Terry wx3m.te...@... wrote: Does anyone have experience using this model on 2 meters? Do they provide enough practical isolation for single antenna, 600kc split? (Sinclair Q2220E 4 Cavity VHF BpBr Repeater)
[Repeater-Builder] PC-to-Radio-to-Repeater site: DTMF Dialer program
I have recently built and tested an interface to my PC that uses the sound card line out for DTMF tones. In addition the interface uses DTR from the PC's COM1 serial port for keying a radio. This interface uses transformer and optical coupling to connect with a local up-link radio used to program the repeater over-the-air when all other means to program the repeater controller are down. I have used the imbedded ARCOM (RCP) controller software (Windows XP) useful for programming their RC210, but some of its parameters are not adjustable to suit my needs. Is anyone using a PC to Radio DTMF program (DOS, Win98 or XP, I don't care) they would like to share? I have looked at a few Freeware Dialers found on the Internet, but none have the ability to key an external device via a serial port control/handshake signal. Thanks, Jim WA6VPL
[Repeater-Builder] Help: Info needed on feed harness to DB-230 low band antenna.
The factory provided feed harness was lost for our Decibel Products DB- 230, 3 element Yagi, that is being refurbished for 6 meters. The driven element on this antenna has a T-match as shown in the rough photo/diagram on page 23 of Catalog No. 16. Can anyone please describe how this particular feed works and how it is configured? I will probably find what was removed in my coax junk box. I just can't remember what it looked like when it was taken off of the tower a number of years ago. Thanks, Jim
[Repeater-Builder] DB-210 feed line matching at 52.88 MHz
After a few hours of frustrating adjustments, I still could not match a (recently shortened) Decibel Products PD-210 antenna I was modifying for use on our 52.88 repeater. Initially, I used an HP- 8920 and SWR bridge and could not adjust the trombones any better than -8dB return loss. I am using a 6 foot pigtail of 50 Ohm, VB-8 coax. Best resonance was found at about an equal 52 inch extension on either side of the antenna's mechanical center. This morning I took a fresh start and pulled out the old SWR meter and an old 6 meter mobile radio. Sure enough, the forward power was about 40 watts and the reflected power was nearly 20 watts. OK, what's wrong here, I mumbled as I stared at the antenna's upper and lower folded elements pointing skyward on its mounting pipe. It passed through my mind that the antenna looked a lot like a folded monopole ground plane with two of its radials pointed straight down. So, I yanked out the lower trombone for some reason and the VSWR went to nearly zero! Next, I shoved the trombone all the way in (noted the same VSWR) and started making measurements. Now, it is obvious to me that the antenna is not really symmetrical. The hot end feed is 2.5 inches off mechanical center. By changing my measurement point to the point where the feed line connects and measuring to the tip of the hot end is 51 inches. Similarly, by measuring from the other side of the exposed insulator to the cold end of the dipole is now also 51 inches. Anyone out there have this happen to them? I wonder if this is something I can measure on the 145 and 440 antennas I have in the back yard? Jim WA6VPL Lompoc, CA
