[Repeater-Builder] Re: CTCSS Encoder/Decoder
We have been experimenting with building CTCSS Units using the 567 Tone Chip and good components, i.e. Caps, multi turn pots etc. The stability is not good in my opinion. For encoding, there's a million PIC-based solutions on the net. I designed my own, using a different PIC (12HV615) to reduce extra components to minimal: it has a built-in voltage stabilizer (no 78L05 needed, just a resisitor), and using bitstream D/A so no external D/A network neccessary. Using SMD will make it really, really small and cheap. I can't publish the details yet as we plan to use the kit as a fundraiser for the local amateur radio museum. For decoder, check out http://www.mcarcoh.org/ke8rv/photo-sd.html, specific the comments about his controller. I exchanged mail with the designer and his design is facinating, though not publically available, which is understandable. I have good experiences with the TS-64 in my repeaters. Note that you can configure it to encode and decode CTCSS at the same time, so it's possible to re-generate CTCSS at the repeater output. 73, Geert Jan
[Repeater-Builder] Encoder/Decoder
Was looking for something else in an old ARRL Handies found the comment that the 567 requires high quality capacitors to maintain stability. On another subject, any advice on purchasing duplexers for 2 metres? Our local supplier has closed down and such items are like hens teeth here Down Under. Cheers, Gordon ZL1KL Tauranga New Zealand.
[Repeater-Builder] Re: FSJ2-50 with PL259
Excellent, I talked with my local cable maker, and he made me a 6 foot FSJ2-50 jumper with Amphenol silver PL259s. I will pick it up on Monday. There was no need for expensive $30 connectors. If I like this FSJ2-50 cable with Amphenol PL259s, I will probably eventually replace all my cables with this product regardless of band or use. Thanks to everyone for their advise, Howard --- In Repeater-Builder@yahoogroups.com, Jeff DePolo j...@... wrote: Depending on the PL-259 in question (i.e. who manufacturered it), sometimes you can get them onto FSJ2 without any problem, other times you need to take a bit off the threads to get it to thread onto the shield. But to complicate matters, some PL-259's are manufacturered such that the ID in the area where the solder holes are located is too small for FSJ2, in which case, you can't use those, unless you just thread them on up to where the ID tapers down, and then sweat-solder the shield to the PL-259 from the rear (i.e. you won't be able to solder through the solder holes). The center conductor fits into the PL-259 pin no problem regardless of manufacturer. Bottom line - try a few PL-259's and stick to manufacturer that works. If I could remember which ones do or don't fit I would tell you, but to be honest, I don't use PL-259's very often, so when I do need to put one on FSJ2, I usually just try a few until I find one that fits... --- Jeff WN3A -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Howard Z Sent: Tuesday, May 04, 2010 10:18 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Re: LDF1-50 with PL259 UG-176 ? DCFluX, So, you have placed a standard PL259 on Andrew FSJ2-50 3/8 cable? Any problems or advise? Howard --- In Repeater-Builder@yahoogroups.com mailto:Repeater-Builder%40yahoogroups.com , DCFluX dcflux@ wrote: Yes, I've done it. On Mon, May 3, 2010 at 7:25 PM, Howard Z Howard_Z@ wrote: I found some more specs: fsj1-50a diameter over dielectric 0.190 inner conductor OD 0.0750 Outer Conductor OD 0.250 fsj2-50 diameter over dielectric 0.280 inner conductor OD 0.1100 Outer Conductor OD 0.380 fsj4-50b diameter over dielectric 0.350 inner conductor OD 0.1400 Outer Conductor OD 0.480 ldf1-50 diameter over dielectric 0.270 inner conductor OD 0.1000 Outer conductor OD 0.310 ldf2-50 diameter over dielectric 0.340 inner conductor OD 0.1200 Outer Conductor OD 0.380 So, it looks like both FSJ2-50 and also LDG2-50 have an outer conductor OD of 0.380 inch. Do you think these cables might be able to use regular PL-259 connectors without any reducer? Howard Yahoo! Groups Links No virus found in this incoming message. Checked by AVG - www.avg.com Version: 9.0.814 / Virus Database: 271.1.1/2842 - Release Date: 05/04/10 02:27:00
RE: [Repeater-Builder] Re: FSJ2-50 with PL259
I use it quite a bit here too. One caveat, even though it is superflex, there's only so much flexing it'll do. Especially if the center conductor was nicked when installing the connectors. Kb0wlf -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:Repeater- buil...@yahoogroups.com] On Behalf Of Howard Z Sent: Friday, May 07, 2010 7:30 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Re: FSJ2-50 with PL259 Excellent, I talked with my local cable maker, and he made me a 6 foot FSJ2-50 jumper with Amphenol silver PL259s. I will pick it up on Monday. There was no need for expensive $30 connectors. If I like this FSJ2-50 cable with Amphenol PL259s, I will probably eventually replace all my cables with this product regardless of band or use. Thanks to everyone for their advise, Howard --- In Repeater-Builder@yahoogroups.com, Jeff DePolo j...@... wrote: Depending on the PL-259 in question (i.e. who manufacturered it), sometimes you can get them onto FSJ2 without any problem, other times you need to take a bit off the threads to get it to thread onto the shield. But to complicate matters, some PL-259's are manufacturered such that the ID in the area where the solder holes are located is too small for FSJ2, in which case, you can't use those, unless you just thread them on up to where the ID tapers down, and then sweat-solder the shield to the PL-259 from the rear (i.e. you won't be able to solder through the solder holes). The center conductor fits into the PL-259 pin no problem regardless of manufacturer. Bottom line - try a few PL-259's and stick to manufacturer that works. If I could remember which ones do or don't fit I would tell you, but to be honest, I don't use PL-259's very often, so when I do need to put one on FSJ2, I usually just try a few until I find one that fits... --- Jeff WN3A -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Howard Z Sent: Tuesday, May 04, 2010 10:18 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Re: LDF1-50 with PL259 UG-176 ? DCFluX, So, you have placed a standard PL259 on Andrew FSJ2-50 3/8 cable? Any problems or advise? Howard --- In Repeater-Builder@yahoogroups.com mailto:Repeater-Builder%40yahoogroups.com , DCFluX dcflux@ wrote: Yes, I've done it. On Mon, May 3, 2010 at 7:25 PM, Howard Z Howard_Z@ wrote: I found some more specs: fsj1-50a diameter over dielectric 0.190 inner conductor OD 0.0750 Outer Conductor OD 0.250 fsj2-50 diameter over dielectric 0.280 inner conductor OD 0.1100 Outer Conductor OD 0.380 fsj4-50b diameter over dielectric 0.350 inner conductor OD 0.1400 Outer Conductor OD 0.480 ldf1-50 diameter over dielectric 0.270 inner conductor OD 0.1000 Outer conductor OD 0.310 ldf2-50 diameter over dielectric 0.340 inner conductor OD 0.1200 Outer Conductor OD 0.380 So, it looks like both FSJ2-50 and also LDG2-50 have an outer conductor OD of 0.380 inch. Do you think these cables might be able to use regular PL-259 connectors without any reducer? Howard Yahoo! Groups Links No virus found in this incoming message. Checked by AVG - www.avg.com Version: 9.0.814 / Virus Database: 271.1.1/2842 - Release Date: 05/04/10 02:27:00 Yahoo! Groups Links No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.5.437 / Virus Database: 271.1.1/2851 - Release Date: 05/06/10 18:26:00
RE: [Repeater-Builder] Dayton
Our usual clan which includes a number of repeater-builder denizens will be in 2370 et al, at the end of a row. Come by for free 807's and bring lots of money to buy stuff, nothing I bring to sell is coming back home with me this year... Long-range forecast for Dayton doesn't look all that great, Sunday looks like the nicest day. The best deals are to be had in the rain! --- Jeff WN3A -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Andrew Seybold Sent: Thursday, May 06, 2010 10:42 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Dayton Our Flea market spots are 737-739, come by and say hello, second row, near the Bar. Andy W6AMS cid:image001.jpg@01CA5969.2F1EB460 aseyb...@andrewseybold.com mailto:aseyb...@andrewseybold.com 315 Meigs Road, Suite A-267 Santa Barbara, CA 93109 805-898-2460 office 805-898-2466 fax www.andrewseybold.com http://www.andrewseybold.com No virus found in this incoming message. Checked by AVG - www.avg.com Version: 9.0.819 / Virus Database: 271.1.1/2842 - Release Date: 05/06/10 14:26:00
[Repeater-Builder] Re: CTCSS Encoder/Decoder
I have to agree, unless you need to Reminisce about the good old days when men actually built the things they used, there are so many inexpensive options for ctcss that actually work, very well. There are a few Selectone units on ebay at about $2.00 and I am certain members here could supply more than a few boards very cheaply that actually work reliably. CJD --- In Repeater-Builder@yahoogroups.com, kevin valentino kevinvalent...@... wrote: Grab an old Standard HX300 or C734 etc. off ebay for practically nothing(if you find one) the enc/dec board is a plug in w/wire leads, very small, dip select, and rock solid. I have one kickin around with the schematic if your interested. I have adapted these to many old crap radios and they always work perfectly. Just a suggestion :-) --- On Thu, 5/6/10, James ka2...@... wrote: From: James ka2...@... Subject: [Repeater-Builder] CTCSS Encoder/Decoder To: Repeater-Builder@yahoogroups.com Date: Thursday, May 6, 2010, 10:35 AM Hi Guys, We have been experimenting with building CTCSS Units using the 567 Tone Chip and good components, i.e. Caps, multi turn pots etc. The stability is not good in my opinion. We will set it to 107.2 and the next time you check it is off enough to where it won't decode until it is re-tuned slightly. I am wondering what your experiences may have been with this CTCSS Chip. Many articles say they work well with the addition of a stable voltage regulator, so we added a five volt regulator, no difference in stability. Any comments and experiences with this and other chips would be appreciated. The availability of CTCSS Chips seems limited.
RE: [Repeater-Builder] Re: CTCSS Encoder/Decoder
Building a PL decoder out of NE567's is old-school, and I've never seen a design that didn't have drift problems. The MX-COM (now CML Micro) tone chips were a better way to go, but many have been discontinued. If you can find them on the surplus market, that would be the easiest way to go. The part numbers were MX-3x5, where x was one of several numbers. Some were designed to be used with a DIP switch for frequency selection, others were designed to tie to a uP and took serial data to select the tone. Dig around for the datasheets, I'm sure they're out there... --- Jeff WN3A -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of tracomm Sent: Friday, May 07, 2010 10:14 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Re: CTCSS Encoder/Decoder I have to agree, unless you need to Reminisce about the good old days when men actually built the things they used, there are so many inexpensive options for ctcss that actually work, very well. There are a few Selectone units on ebay at about $2.00 and I am certain members here could supply more than a few boards very cheaply that actually work reliably. CJD --- In Repeater-Builder@yahoogroups.com, kevin valentino kevinvalent...@... wrote: Grab an old Standard HX300 or C734 etc. off ebay for practically nothing(if you find one) the enc/dec board is a plug in w/wire leads, very small, dip select, and rock solid. I have one kickin around with the schematic if your interested. I have adapted these to many old crap radios and they always work perfectly. Just a suggestion :-) --- On Thu, 5/6/10, James ka2...@... wrote: From: James ka2...@... Subject: [Repeater-Builder] CTCSS Encoder/Decoder To: Repeater-Builder@yahoogroups.com Date: Thursday, May 6, 2010, 10:35 AM Hi Guys, We have been experimenting with building CTCSS Units using the 567 Tone Chip and good components, i.e. Caps, multi turn pots etc. The stability is not good in my opinion. We will set it to 107.2 and the next time you check it is off enough to where it won't decode until it is re-tuned slightly. I am wondering what your experiences may have been with this CTCSS Chip. Many articles say they work well with the addition of a stable voltage regulator, so we added a five volt regulator, no difference in stability. Any comments and experiences with this and other chips would be appreciated. The availability of CTCSS Chips seems limited. No virus found in this incoming message. Checked by AVG - www.avg.com Version: 9.0.819 / Virus Database: 271.1.1/2842 - Release Date: 05/07/10 02:26:00
[Repeater-Builder] Re: CTCSS Encoder/Decoder
Hi Chuck, Chuck Kelsey wb2...@... wrote: Skipp, I suspect that you were the exception rather than the rule, then. I'm often told the above... for more than one reason. Why some of you are smiling sideways when you say that is another subject unto itself. To me there are better ways to do it than a 567. Sure there are... but back in the early 1980's I had a lot more time than pocket money so I built a lot more discrete circuits and the 567 was pretty inexpensive. I remember playing with various 567 circuits back in the 70's. Never could get reliable performance. I tried a number of different circuits using a lot of the different chip available at the time. I didn't have much of a problem with the 567 circuit once the support parts stopped changing value or I used better quality parts. Used them for paging frequencies. Gave up and started using commercial encoders and decoders and never looked back. Of course when it became time to do things on a more professional level... I used more professional equipment. But I built most of my early ham repeater controllers from scratch. Maybe you can give the guy some guidance to get some stability and choke down the bandwidth so that adjacent tones don't false the thing. Chuck Rather than reinvent the wheel... I provided a real world CTCSS circuit references for those who would actually care to chase that information down. There are more practical methods to decode CTCSS... but the NE-567 or equivalent will do the job. As Jeff said, yes it is old school but at least it is possible to use the chip for the cause. cheers, s.
Re: [Repeater-Builder] Encoder/Decoder
Hi Gordon, Most in my area like the duplexers made by TX RX Systems Inc. www.txrx.comWebLink/WebLink.aspx?LogEventType=WebLinkkey=eqqm%3a%2f%2fttt.quou.zljcorporateKey=900254929%5CRBI.Kellysearch.PresentationControls.common.HBXUrlName I have several sets VHF and UHF in commercial and Amateur use. I have one set that has been on my VHF Repeater for almost 20 years and has never been touched and are still on spec. Customer Service is available by calling and asking for Mary Brown. She came up through the ranks in the factory and can tune a duplexer as good as anyone and is now taking questions and wants from the customers. Good luck.JIM KA2AJH On Thu, May 6, 2010 at 10:51 PM, Gordon Cooper zl...@nzart.org.nz wrote: Was looking for something else in an old ARRL Handies found the comment that the 567 requires high quality capacitors to maintain stability. On another subject, any advice on purchasing duplexers for 2 metres? Our local supplier has closed down and such items are like hens teeth here Down Under. Cheers, Gordon ZL1KL Tauranga New Zealand. -- Jim Cicirello 181 Stevens Street Wellsville, N.Y. 14895 (585)593-4655
[Repeater-Builder] RCA Connectors
I would like to know where you all get the RCA connectors that are used for RF and are like the ones in the GE MASTR II? Thanks Mike N8FWD
Re: [Repeater-Builder] Re: CTCSS Encoder/Decoder
Thanks to all who have shared their comments and experience on the LM567 for CTCSS Encode and Decode. I have many ideas to work with now and in the future. You have all given me several ways to go from Skips comments on how to prefect the 567 to Ken and Jeff's recommendations on the CML Micro MX IC's. Again this group is the best resource for Amateur Radio Information available anywhere. Thanks to all who has taken the time to share information. 73 JIM KA2AJH Wellsville, NY On Fri, May 7, 2010 at 11:13 AM, skipp025 skipp...@yahoo.com wrote: Hi Chuck, Chuck Kelsey wb2...@... wrote: Skipp, I suspect that you were the exception rather than the rule, then. I'm often told the above... for more than one reason. Why some of you are smiling sideways when you say that is another subject unto itself. To me there are better ways to do it than a 567. Sure there are... but back in the early 1980's I had a lot more time than pocket money so I built a lot more discrete circuits and the 567 was pretty inexpensive. I remember playing with various 567 circuits back in the 70's. Never could get reliable performance. I tried a number of different circuits using a lot of the different chip available at the time. I didn't have much of a problem with the 567 circuit once the support parts stopped changing value or I used better quality parts. Used them for paging frequencies. Gave up and started using commercial encoders and decoders and never looked back. Of course when it became time to do things on a more professional level... I used more professional equipment. But I built most of my early ham repeater controllers from scratch. Maybe you can give the guy some guidance to get some stability and choke down the bandwidth so that adjacent tones don't false the thing. Chuck Rather than reinvent the wheel... I provided a real world CTCSS circuit references for those who would actually care to chase that information down. There are more practical methods to decode CTCSS... but the NE-567 or equivalent will do the job. As Jeff said, yes it is old school but at least it is possible to use the chip for the cause. cheers, s. -- Jim Cicirello 181 Stevens Street Wellsville, N.Y. 14895 (585)593-4655
[Repeater-Builder] Re: CTCSS Encoder/Decoder
Ah, yes, the (in)famous 567. It could be quite good at what it was designed to do. The datasheets and application documentation were actually very helpful. An Amen from the crowd... Being TTL compatible they stressed the power supply with current spikes so a bunch of caps were needed on the supply buss near the chip. Al, You made me do a quick flashback to an earlier time of spikes on the power supply rails... I'd almost buried that memory. Their main limitation was the TC of the external timing resistors and caps. Another Amen... I was so proud of the first circuit I built and installed on a repeater, which became intermittent after a few weeks, then stopped working after a month. Turns out the parts had aged and changed value. That circuit received a quick realignment while I built a replacement using better parts. They would often take 14 or more cycles of the incoming tone to detect it, especially if this tone was nearly 180 degrees out from the free running frequency of the 567 PLL. Which is actually quite usable, especially when you have/had nothing in place before that. (There was a kluge around this using two 567's running in quadrature and OR-ing their outputs.) There was also more than one method to slightly steer the free running frequency to reduce the detect time. As someone mentioned they are fairly level sensitive to the incoming tone. There's a single op-amp audio compressor circuit (driving a clamping transistor or fet) re-drawn and posted in a few places on the web and it's pretty much a copy of the audio agc circuit I first saw parked in front of a commercial 567 tone decoder circuit (back in the 1970's). Of course I copied and used that circuit as did a lot of other people. But I never had to use one in front of a 567 circuit I built. And they had problems with sub-harmonics. Pretty easy to deal with... If you examine the Hamtronics TD-3 CTCSS Encoder/Decoder circuit I had provided the link for, you'll notice the filter circuit built into the supporting parts of Q1. http://www.hamtronics.com/pdf/TD-3.pdf diagram on the last page. I used the 567s successfully to decode various tones used in commercial broadcast applications but these tones were fairly widely spaced. And many, many hours of RD were involved to tame them. This was in the middle to later 1970's when the 567 was new technology. I would not dream of using them for anything serious today. Probably true, but they would still work for the cause if one were motivated and paying attention to the details. Although many of the group members might discount the Hamtronics TD-3 circuit, all things considered it does work fairly well for what it is. So does/did the Yaesu version of the same circuit I have a copy of somewhere in my files. There are much better options available. Ebay often has decoders for under $30, sometimes less than $20. Yep, Ebay can easily discourage building anything from scratch. 73, Al, K9SI cheers Al, skipp
[Repeater-Builder] Re: RCA Connectors
Hi Mike, N8FWD kc8...@... wrote: I would like to know where you all get the RCA connectors that are used for RF and are like the ones in the GE MASTR II? Thanks Mike N8FWD Good luck trying to find any RF related RCA Connectors. I needed some about a year back and the sources have almost all dried up. Everyone seems to carry the crappy audio RCA Connectors but I had a horrible time finding the the original RF type and then only found them from a non retail source... and quantities were limited back then. So buy them if you can find them and they are one of the items I have my eyes open, looking for at Dayton. cheers, s.
Re: [Repeater-Builder] Dayton
Bars + Flea Markets + Lots of HAMs = A great time!!! John Hymes La Rue Communications 10 S. Aurora Street Stockton, CA 95202 http://tinyurl.com/2dtngmn - Original Message - From: Andrew Seybold To: Repeater-Builder@yahoogroups.com Sent: Thursday, May 06, 2010 7:41 PM Subject: [Repeater-Builder] Dayton Our Flea market spots are 737-739, come by and say hello, second row, near the Bar. Andy W6AMS aseyb...@andrewseybold.com 315 Meigs Road, Suite A-267 Santa Barbara, CA 93109 805-898-2460 office 805-898-2466 fax www.andrewseybold.com image001.jpg
Re: [Repeater-Builder] RCA Connectors
Joel at RF Connection has the teflon-insulated, short center pin RCA plugs that work well with GE stuff. They are not on the website as far as I know -- call him. Chuck WB2EDV - Original Message - From: N8FWD kc8...@hotmail.com To: Repeater-Builder@yahoogroups.com Sent: Friday, May 07, 2010 11:28 AM Subject: [Repeater-Builder] RCA Connectors I would like to know where you all get the RCA connectors that are used for RF and are like the ones in the GE MASTR II? Thanks Mike N8FWD Yahoo! Groups Links No virus found in this incoming message. Checked by AVG - www.avg.com Version: 9.0.819 / Virus Database: 271.1.1/2858 - Release Date: 05/06/10 14:26:00
[Repeater-Builder] Skip At Dayton
Hi Skip, What Booth are you going to be in at Dayton?,Will you be going? Wesley AB8KD P.S. I want to see how Ugly you are
RE: [Repeater-Builder] Skip At Dayton
Hi Skip, What Booth are you going to be in at Dayton?,Will you be going? Wesley AB8KD P.S. I want to see how Ugly you are There are plenty of people at Dayton much more ugly than Skipp - anyone who has attended Dayton before knows what I mean :-) When he's not mowing down pedestrians with a Hamvention security golf cart, Skipp goes slumming at our spaces periodically, stealing beverages and expensive items off the table. Beware of him. Keep one hand on your wallet at all times, and make sure your YL/XYL stays far, far away.
Re: [Repeater-Builder] Skip At Dayton
Thanks Jeff, Will you be there?What booth? - Original Message - From: Jeff DePolo To: Repeater-Builder@yahoogroups.com Sent: Friday, May 07, 2010 1:36 PM Subject: RE: [Repeater-Builder] Skip At Dayton Hi Skip, What Booth are you going to be in at Dayton?,Will you be going? Wesley AB8KD P.S. I want to see how Ugly you are There are plenty of people at Dayton much more ugly than Skipp - anyone who has attended Dayton before knows what I mean :-) When he's not mowing down pedestrians with a Hamvention security golf cart, Skipp goes slumming at our spaces periodically, stealing beverages and expensive items off the table. Beware of him. Keep one hand on your wallet at all times, and make sure your YL/XYL stays far, far away.
Re: [Repeater-Builder] Skip At Dayton
Forget last Message. I see the e-mail where you will be - Original Message - From: Wesley Bazell To: Repeater-Builder@yahoogroups.com Sent: Friday, May 07, 2010 1:41 PM Subject: Re: [Repeater-Builder] Skip At Dayton Thanks Jeff, Will you be there?What booth? - Original Message - From: Jeff DePolo To: Repeater-Builder@yahoogroups.com Sent: Friday, May 07, 2010 1:36 PM Subject: RE: [Repeater-Builder] Skip At Dayton Hi Skip, What Booth are you going to be in at Dayton?,Will you be going? Wesley AB8KD P.S. I want to see how Ugly you are There are plenty of people at Dayton much more ugly than Skipp - anyone who has attended Dayton before knows what I mean :-) When he's not mowing down pedestrians with a Hamvention security golf cart, Skipp goes slumming at our spaces periodically, stealing beverages and expensive items off the table. Beware of him. Keep one hand on your wallet at all times, and make sure your YL/XYL stays far, far away.
[Repeater-Builder] Re: Skip At Dayton
Hi Westley, Hi Skipp, What Booth are you going to be in at Dayton?, Will you be going? Wesley AB8KD I will be at the Dayton Hamvention. Skipp goes slumming at our spaces periodically, stealing beverages and expensive items off the table. I always wonder why the tops are off the bottles before they come into view. No wonder I feel funny after leaving your area Jeff... why does this drink taste funny?, am I in Mexico again?. Beware of him. Keep one hand on your wallet at all times, and make sure your YL/XYL stays far, far away. Nothing like talking into an HT to impress a girl and then try to tell her you're not a geek as you're heading toward the Hamsexy Table. Or the red car with 28 antennas, your call letter plates and no back seat is just borrowed from a friend for the Hamvention Weekend. remember... I'm trying to stay on the junk ender's 12 step program s.
[Repeater-Builder] Coax Connectors
In part of an estate we're helping with, there are about 30 lbs of coax connectors and adapters, UHF, N, RCA, F, SMA, BNC, et. al. Some new, some used. Prices from 50-cents to about $3.00 for the new ones. If interested, contact me offline and I'll send you a list (too long to clutter up the group page here). Will haggle for quantity purchases. 73 Walt (N4GL)
[Repeater-Builder] Any Used Mototrbo Repeaters
Anybody out there have any used UHF low split XPR8300 repeater for sale they want to get rid of. We need it for a new site going in for the HAM system here in Colorado. Mike Mullarkey K7PFJ 6886 Sage Ave Firestone, Co 80504 303-736-9693
Re: {Disarmed} [Repeater-Builder] Coax Connectors
List, please! -- Max Kelley KC2SPY www.maxkelley.com On Fri, 2010-05-07 at 21:22 +, sjotrollet wrote: In part of an estate we're helping with, there are about 30 lbs of coax connectors and adapters, UHF, N, RCA, F, SMA, BNC, et. al. Some new, some used. Prices from 50-cents to about $3.00 for the new ones. If interested, contact me offline and I'll send you a list (too long to clutter up the group page here). Will haggle for quantity purchases. 73 Walt (N4GL)
RE: [Repeater-Builder] RCA Connectors
Mike, Motorola Parts still carries the RCA plug with a low-loss ceramic insulator that is intended for RF. Part Number 2882331G01, about $9 for a package of 10 plugs. 73, Eric Lemmon WB6FLY -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of N8FWD Sent: Friday, May 07, 2010 8:29 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] RCA Connectors I would like to know where you all get the RCA connectors that are used for RF and are like the ones in the GE MASTR II? Thanks Mike N8FWD
Re: [Repeater-Builder] RCA Connectors
Eric - Do you know if these have the short center pin like GE uses? Also, I previously stated that The RF Connection is a source for these, and stated that the insulator is Teflon. I may be incorrect on the insulator and will state that it appears to be Teflon, but could easily be ceramic. In any event it is bright white and doesn't appear to be cheap plastic. Chuck WB2EDV - Original Message - From: Eric Lemmon wb6...@verizon.net To: Repeater-Builder@yahoogroups.com Sent: Friday, May 07, 2010 7:31 PM Subject: RE: [Repeater-Builder] RCA Connectors Mike, Motorola Parts still carries the RCA plug with a low-loss ceramic insulator that is intended for RF. Part Number 2882331G01, about $9 for a package of 10 plugs. 73, Eric Lemmon WB6FLY
RE: [Repeater-Builder] RCA Connectors
Chuck, Yes, the Motorola RCA plugs have the short pins, which I measured to project 5/32 beyond the edge of the outer shell. 73, Eric Lemmon WB6FLY -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Chuck Kelsey Sent: Friday, May 07, 2010 4:52 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] RCA Connectors Eric - Do you know if these have the short center pin like GE uses? Also, I previously stated that The RF Connection is a source for these, and stated that the insulator is Teflon. I may be incorrect on the insulator and will state that it appears to be Teflon, but could easily be ceramic. In any event it is bright white and doesn't appear to be cheap plastic. Chuck WB2EDV - Original Message - From: Eric Lemmon wb6...@verizon.net mailto:wb6fly%40verizon.net To: Repeater-Builder@yahoogroups.com mailto:Repeater-Builder%40yahoogroups.com Sent: Friday, May 07, 2010 7:31 PM Subject: RE: [Repeater-Builder] RCA Connectors Mike, Motorola Parts still carries the RCA plug with a low-loss ceramic insulator that is intended for RF. Part Number 2882331G01, about $9 for a package of 10 plugs. 73, Eric Lemmon WB6FLY
Re: [Repeater-Builder] Re: CTCSS Encoder/Decoder
At 5/7/2010 04:21, you wrote: We have been experimenting with building CTCSS Units using the 567 Tone Chip and good components, i.e. Caps, multi turn pots etc. The stability is not good in my opinion. For encoding, there's a million PIC-based solutions on the net. I designed my own, using a different PIC (12HV615) to reduce extra components to minimal: it has a built-in voltage stabilizer (no 78L05 needed, just a resisitor), and using bitstream D/A so no external D/A network neccessary. By bitstream D/A do you mean PWM? If so, how fast do you clock it how many serial bits do you use to create each sample? For decoder, check out http://www.mcarcoh.org/ke8rv/photo-sd.html, specific the comments about his controller. I exchanged mail with the designer and his design is facinating, though not publically available, which is understandable. It's really mind-boggling what can be done with PICs. I see Don's using the analog input of a fairly low-end PIC, but I'd think you could use a digital input if the output of the LPF was limited via a very high gain amp. stage, a la ComSpec. Did he implement an IIR filter in the 12F675? Bob NO6B
[Repeater-Builder] Tait T800 S1 Eprom Problems
Hi, Was wondering if anyone had any knowledge or experience of any bugs when burning a new Eprom for one of the above units ? I can compose the new .Bin file correctly using PGM800 Win ( i think ) and send it to the Eprom burner that is telling me when it is finished that it is copied correctly to the chip ( via Verify ) but when the chip is installed on the eprom board and fitted to the tx module i have no VCO lock = no transmit. I have tried adjusting the VCO trimmer but cannot get it to lock with the new chip installed. I have added one other frequency to the original one that was on the original chip ( up exactly 10 mhz ) but it will not lock with either the original Channel freq or the new one on the new chip. The original Chip worked fine with the one that was on there and comparing the .bin file from this and the new one both look the same when opened with PGM800. I have read the previous posts on this board about creating a new eprom but if i have done something wrong i cannot see what it is. Any info or advice would be much appreciated, Unit in question is a T881 850 - 930 mhz Regards,
