[Repeater-Builder] New file uploaded to Repeater-Builder
Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the Repeater-Builder group. File: /dual_level_sq.pdf Uploaded by : skyislandpage [EMAIL PROTECTED] Description : Micor replicant squelch circuit using regular parts You can access this file at the URL: http://groups.yahoo.com/group/Repeater-Builder/files/dual_level_sq.pdf To learn more about file sharing for your group, please visit: http://help.yahoo.com/help/us/groups/files Regards, skyislandpage [EMAIL PROTECTED]
Re: [Repeater-Builder] Thanks for the info
Hello Mike, I'm sure that was it's intended purpose but it is not responding to the frequency that is noted on the top of the crystal can. We did not follow up because it is to easy for me to run up and shut the thing down if needed. I will have to do a little more study on the 70cm receiver. 73 Bob WB6ODR - Original Message - From: Mike Perryman To: Repeater-Builder@yahoogroups.com Sent: Tuesday, April 17, 2007 9:55 AM Subject: RE: [Repeater-Builder] Thanks for the info Our Micro is on 2 meters and has a 70 cm receiver in the cabinet who's frequency I don't know. Need to find that out!! ^ control receiver maybe??? just a thought... 73 Mike Perryman www.k5jmp.us -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] Behalf Of Bob Linda Smith Sent: Monday, April 16, 2007 8:47 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Thanks for the info Thanks Nate, I've put your email in the special folder on our repeater.. I remember when I was with the Phone Co., we did just what you are suggesting.. Wrote it all down, twice or three times, that was before digital photos of course.. 73, Bob Smith WB6ODR, Prescott, AZ - Original Message - From: Nate Duehr To: Repeater-Builder@yahoogroups.com Sent: Monday, April 16, 2007 4:24 PM Subject: Re: [Repeater-Builder] Rethinking the Possible poll question On 4/15/07, Bob Linda Smith [EMAIL PROTECTED] wrote: I think our Micor must have been properly converted because it has been on the air for about 25 years according to the original owner who I talk with 2 weeks ago. Our Micro is on 2 meters and has a 70 cm receiver in the cabinet who's frequency I don't know. Need to find that out!! The main reason for a possible change of equipment is the possibility of some digital work later on. Thanks for the pointers. Bob WB6ODR Side note for your project there Bob, Just because it was on-air doesn't mean it performed well, or even to spec. If you have things like a UHF receiver in the cabinet that you don't know what it is, now is the time to document, document, document... Later on, you'll certainly want to know things like, Just where is that wire from the controller hooked to, and digital photos, drawings of all wiring, etc... are what you'll need. Attack the thing with a label maker too, and label every cable interconnect and every port they plug into. Take lots of pictures. Go nuts. Digital is cheap. Next, find someone with the right test gear and measure all the basics as it's installed at your site. Receiver sensitivity off and on the antenna system, transmitter power level, duplexer isolation, feedline losses... whatever you can measure, and write it all down somewhere -- start your engineering book for the repeater system, and then require that if changes are made, the docs get updated. You'll be happy you did later. And as friends say, if you haven't measured -- you don't know where you're starting from... Nate WY0X
Re: [Repeater-Builder] Re: Problem with fan noise in power line.
I had DC fans on a Henry 100w repeater amp. The first time they came on there was a terrible buzz on the transmitted audio. It never bothered the receive audio. Henry supplied some AC fans and that took care of my problem. One way to test whether it's mechanical or EMI is to stop the fans from rotating. If the buzz stays there, it's EMI; if the buzz goes away, it's mechanical. I actually had a little mechanical noise, but I took care of that by using some rubber grommets between the cabinet and the MaxTrac exciter, around the mounting screws. ABsolutely quiet now. Bob M. == --- sgreact47 [EMAIL PROTECTED] wrote: As Rod pointed out, the vibration from the fan causing transmitted noise in his GR300 Rptr. In the Motorola GM,Radius M, and Maxtrac, series mobiles the RX and TX VCO's are very sensitive to vibration. Other radios may be sensitive to vibration also. [EMAIL PROTECTED] wrote: I too had a fan noise on my GR 300 repeater. As Eric instructed, I replaced the fan with a low EMI. Still had some but a lot less. Then I took the new low EMI fan and removed it from the repeater cabinet and hung it from the big cabinet, holding all the repeater items, so it still blows on the heatsink and it is almost not heard. I had two problems, 1) to high of EMI rated fan, 2) vibration noise. Thank you Eric L. for your help with my problem. Rod KC7VQR __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com
[Repeater-Builder] ARRL Aiding Effort to Mitigate Repeater Interference to Military Radars
ARRL Aiding Effort to Mitigate Repeater Interference to Military Radars A PAVE PAWS radar facility. [US Air Force Photo] NEWINGTON, CT, Apr 17, 2007 -- The ARRL has been working with the US Department of Defense to develop a plan to mitigate alleged interference from 70 cm ham radio repeaters to military radar systems on both coasts. Amateur Radio is secondary to government users from 420 to 450 MHz and must not interfere with primary users. Citing an increasing number of interference complaints, the US Air Force has asked the FCC to order dozens of repeater systems to either mitigate interference to the PAVE PAWS radars or shut down. The Commission has not yet responded. The situation affects 15 repeaters within less than 100 miles of Otis Air Force Base on Cape Cod, Massachusetts, and more than 100 repeaters within some 140 miles of Beale Air Force Base near Sacramento, California. ARRL Regulatory Information Specialist Dan Henderson, N1ND, stresses that the Defense Department acknowledges Amateur Radio's value in disasters and emergencies and is being extremely cooperative -- and a wholesale shutdown of US 70 cm Amateur Radio activity is not in the offing. The ARRL Lab is working up calculations on each repeater system the Air Force has identified to determine where interference-mitigation techniques offer a reasonable chance of keeping the repeater on the air, Henderson says. In order for the amateur community as a whole to succeed in this venture, it is going to require the cooperation of all affected repeater owners. A US Air Force contractor identified the problematic repeater systems last summer, but the situation didn't become critical until the Air Force contacted the FCC a month ago. ARRL officials met with Defense Department representatives in late March to discuss alleged interference to the PAVE PAWS radar sites, and this week Henderson contacted Amateur Radio frequency coordinating organizations in both affected areas -- the Northern Amateur Relay Council of California (NARCC) and the New England Spectrum Management Council (NESMC). PAVE PAWS is a missile and satellite detection and tracking system, and its name is a half-acronym. PAVE is simply an Air Force program name. PAWS stands for Phased Array Warning System. Although PAVE PAWS has been in existence since the late 1970s, the Cape Cod and Sacramento sites are the only remaining operational facilities in the US. PAVE PAWS facilities occupy essentially the entire 70 cm band -- one factor that makes mitigation difficult. Feeding upward of 1800 active antenna elements, the broadband radar transmitters emit an average power output of more than 145 kW. As a first step to mitigate the interference, the ARRL is recommending that all affected repeater owners reduce power -- possibly to as little as 5 W effective radiated power (ERP). We understand the difficulty this may cause to owners and users, Henderson said, but the alternative to operating with a smaller coverage area may be not operating at all. Amateur Radio stations already must abide by a maximum 50 W PEP power limitation in the areas around both Air Force facilities. Henderson says the League is still seeking further information on the problem. Until the Defense Department accepts a mitigation plan, repeater owners should exercise patience, he cautioned. Once the ARRL Lab has completed its propagation calculations, we will be in a better position to provide advice for specific repeaters on a case-by-case basis. Contact Dan Henderson, N1ND (860-594-0236), with specific questions or issues associated with this situation. __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com
Re: [Repeater-Builder] mc-3357 mc-3359 squelch circuit
At 4/17/2007 17:10, you wrote: A few years ago I designed a dual level squelch circuit that could be a replacement for the Micor type carrier squelch. I built a couple of the prototypes and put them into service, and they worked very well, you really couldn't tell them from the real thing. They were designed around readily available and cheap parts, so replicating it would be very easy. I think total parts costs would be around $5, not counting the board. If anyone is interested, I can supply a PDF of the schematic, or upload it to the site. Yes, I'd like to see it. I tried designing a bi-level squelch back in the '80s, but it never worked right. Didn't really have a deep enough electronics design background back then to design it right (op amps, BJTs reed relays - yuck!). Bob NO6B
Re: [Repeater-Builder] mc-3357 mc-3359 squelch circuit
At 4/17/2007 15:00, you wrote: Re: mc-3357 mc-3359 squelch circuit Many receivers used the two mentioned chips... in both commericial, Amateur Radio and classic scanner circuits. I've seen both part numbers converted to tk numbers in Yaesu and Uniden Radios. There are a number of working squelch circuits using the back end section of the chip with and without external op amps. While the Hamtronics circuit is/was rather basic it did work pretty well and was easy to experiment with changes/mods. IMO the Hamtronics squelch circuit was the worst I've ever heard. The impulse response problem really caused a lot of subtle performance problems that just don't show up in other squelches. Let's not forget that long Motrac-like squelch tail to boot. In the end, an excellent candidate for a Micor squelch retrofit. Bob NO6B
[Repeater-Builder] A true Dual Squelch Circuit ?
A true Dual Squelch Circuit? I don't see anyone talking about the other type of dual squelch circuit. The squelch circuit operation is also all about what you do with the results. The Micor Chip squelch is a well known circuit with action/operation probably based on voice band energy/information and its detection against other information (or lack there off) and/or noise. That's a fine and dandy for voice audio... but if you examine both the Micor and MSR-2000 Repeater Squelch Module circuits... you will clearly see how the carrier detection circuit (an integrator) is a different animal. The integrator circuit operation is reported to be leagues better for noise detection. So the better beast would be to use a dual circuit like the Motorhead Noise Integrator for your COS/COR logic and the voice band and/or second squelch circuit for the voice audio gate. Hey that's what Motorola does/did in the Micor and the MSR-2000. Don't be confused by a dual fast/slow squelch circuit operation being the same as the integrator. So out of the pipe... what do you do with your squelch circuit output? Drive and gate the cor/cos and audio gate at the same time (most people do...)? Or do you run a true dual squelch circuit with different output logic for cos/cor and audio gate control? Sometimes it's all a mute point if you hide or gate your repeater controller receive audio behind an audio delay module. So What's in your wallet? cheers, skipp A PDF file of the schematic has been uploaded to the files page of Repeater Builder. The link is here: If the link doesn't work, just go to the file page and download it, it's called dual_level_sq.pdf
Re: [Repeater-Builder] Need ACC RC-85 Power Plug Pins or Info
That is the same plug that Regency used on the BTL series of mobiles, and I've seen it on other devices, too. It shouldn't be too hard to find. Joe M. [EMAIL PROTECTED] wrote: I have an old ACC RC-85 Repeater Controller that I'm finally getting around to putting back in service. I have all of the harmonica connectors for the Logic, Audio, etc. connectors, but am missing the 4-pin connector for power. There are four wires to go to the power connector - two grounds, +12VDC and a backup battery +12VDC (if used). Does anyone have the info or source for an appropriate replacement plug (uses female pins) and/or the size of the pins? I could just make up individual wires to each pin and use heat shrink to keep them from shorting to each other, since once it's in the rack, it won't be moving around. Thanks, Larry
[Repeater-Builder] Need Micor channel elements PL reeds
1 each kxn1052 (Transmit) and 1 kxn1024(A) (Receive) 2 141.3 reeds Thanks 73 Jeff - NJ5R
[Repeater-Builder] REPCO 2 watt vhf transmitter strip- info request
Recently a member posted some info about this 2 watt vhf board being available on Ebay. I obtained 8 of these boards for experimentation. They are marked RD*3HT**X date of 2-83 and appear new and unused. Indicated tested at 154.570 (no crystal installed). Wondering if anyone might have some documetation or scematic or pinout that might help in putting this board into an amateur radio project. Would gladly share experience with this board with anyone. The board is high quality and may be ideal in a small size vhf project. Thanks in advance. Can contact off list at [EMAIL PROTECTED] Art Carlson
[Repeater-Builder] Re: Need ACC RC-85 Power Plug Pins or Info
Sure Larry... go to the Jameco web site www.jameco.com and request a paper catalog. They also have a web site catalog but I like the paper copy better. They carry the connector type and size you're looking for along with very fair prices. You just have to get above the $25 min to avoid an extra $5 service charge. cheers, skipp I have an old ACC RC-85 Repeater Controller that I'm finally getting around to putting back in service. I have all of the harmonica connectors for the Logic, Audio, etc. connectors, but am missing the 4-pin connector for power. There are four wires to go to the power connector - two grounds, +12VDC and a backup battery +12VDC (if used). Does anyone have the info or source for an appropriate replacement plug (uses female pins) and/or the size of the pins? I could just make up individual wires to each pin and use heat shrink to keep them from shorting to each other, since once it's in the rack, it won't be moving around. Thanks, Larry
[Repeater-Builder] Mini - UHF Connector
I have a Problem in Finding a GOOD Mini UHF Connector for The Motorola GTX And Spectra 900 Mhz . . The problem is No Matter how Tight with a Pair Pliers I get them they still are loose, While taking another look on the ones I got NO Matter how tight the Outer ring it will NOT Make a difference Because it is Hitting the Back of the connector on the Radio Before it Tightens up And the other Part is Loose. , I Took a Dremel and Cut off Part of the Back of the adapter, that Works Great. But I need to Know what everyone else is using, Maybe Amphenol and Part Number. Also I got a Motorola Spectra VHFUHF 110 Watts Coming soon, . I cannot believe they use a Mini UHF On the radios at that Power. Thanks Don KA9QJG
RE: [Repeater-Builder] Re: Problem with fan noise in power line.
Bob, One of the cheap brushless fans that I found was RF-noisy would radiate EMI only while it was running, and the EMI would stop when I held the blades. I proved it was radiated EMI (RFI, actually) rather than conducted EMI by simply running it on a small 12V battery. I could see the noise on a spectrum analyzer, and it still put out a healthy signal even when I added a ferrite choke and some capacitors. The low-EMI Panasonic fan was noise-free. The reason most cheap brushless fans have a noise radiation and conduction problem is because a Hall-effect device is used to sense the rotation of the armature. If you stall the fan, the EMI goes away. It's not the Hall-effect device itself that causes the problem; it's the lack of proper filtering and shielding within the fan's motor drive circuitry. I certainly agree with your point about mechanical vibration; some fans are poorly balanced and can cause microphonics. 73, Eric Lemmon WB6FLY -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Bob M. Sent: Wednesday, April 18, 2007 5:48 AM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Re: Problem with fan noise in power line. I had DC fans on a Henry 100w repeater amp. The first time they came on there was a terrible buzz on the transmitted audio. It never bothered the receive audio. Henry supplied some AC fans and that took care of my problem. One way to test whether it's mechanical or EMI is to stop the fans from rotating. If the buzz stays there, it's EMI; if the buzz goes away, it's mechanical. I actually had a little mechanical noise, but I took care of that by using some rubber grommets between the cabinet and the MaxTrac exciter, around the mounting screws. ABsolutely quiet now. Bob M. == --- sgreact47 [EMAIL PROTECTED] mailto:echocomms%40hotmail.com wrote: As Rod pointed out, the vibration from the fan causing transmitted noise in his GR300 Rptr. In the Motorola GM,Radius M, and Maxtrac, series mobiles the RX and TX VCO's are very sensitive to vibration. Other radios may be sensitive to vibration also. [EMAIL PROTECTED] wrote: I too had a fan noise on my GR 300 repeater. As Eric instructed, I replaced the fan with a low EMI. Still had some but a lot less. Then I took the new low EMI fan and removed it from the repeater cabinet and hung it from the big cabinet, holding all the repeater items, so it still blows on the heatsink and it is almost not heard. I had two problems, 1) to high of EMI rated fan, 2) vibration noise. Thank you Eric L. for your help with my problem. Rod KC7VQR
Re: [Repeater-Builder] REPCO 2 watt vhf transmitter strip- info request
Hello Arthur Any REPCO item is a Chinese copy of someone else's item for which they have a license to copy. I have a couple REPCO items I have been able to backtrack back to the original manufacturer. I am not familiar with the boards you have and cannot help. 73 de Tom Manning, AF4UG - Original Message - From: Arthur R Carlson To: Repeater-Builder@yahoogroups.com Sent: Wednesday, April 18, 2007 12:46 PM Subject: [Repeater-Builder] REPCO 2 watt vhf transmitter strip- info request Recently a member posted some info about this 2 watt vhf board being available on Ebay. I obtained 8 of these boards for experimentation. They are marked RD*3HT**X date of 2-83 and appear new and unused. Indicated tested at 154.570 (no crystal installed). Wondering if anyone might have some documetation or scematic or pinout that might help in putting this board into an amateur radio project. Would gladly share experience with this board with anyone. The board is high quality and may be ideal in a small size vhf project. Thanks in advance. Can contact off list at [EMAIL PROTECTED] Art Carlson
RE: [Repeater-Builder] Mini - UHF Connector
Don, I have to wonder: Who makes the mini-UHF connector that is the problem? My connector of choice is the RFU-600-6 crimp connector made by RF Industries. It's available through TESSCO and other commercial radio supply houses. This connector works on MaxTrac, Radius, GM300, M1225, R1225, and CDM radios, so I feel it also will work on GTX and Spectra radios. Don't worry about a puny 110 watt radio; the mini-UHF is specified up to 2.5 GHz and better than 2,000 watts. Well, that is the spec for the RF Industries connector, which is machined brass and has silver-plated contacts and a PTFE dielectric. Some of Amphenol's economy connectors have a phenolic insulator that may not perform as well. YMMV! 73, Eric Lemmon WB6FLY -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Don Sent: Wednesday, April 18, 2007 2:39 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Mini - UHF Connector I have a Problem in Finding a GOOD Mini UHF Connector for The Motorola GTX And Spectra 900 Mhz . . The problem is No Matter how Tight with a Pair Pliers I get them they still are loose, While taking another look on the ones I got NO Matter how tight the Outer ring it will NOT Make a difference Because it is Hitting the Back of the connector on the Radio Before it Tightens up And the other Part is Loose. , I Took a Dremel and Cut off Part of the Back of the adapter, that Works Great. But I need to Know what everyone else is using, Maybe Amphenol and Part Number. Also I got a Motorola Spectra VHF-UHF 110 Watts Coming soon, . I cannot believe they use a Mini UHF On the radios at that Power. Thanks Don KA9QJG
RE: [Repeater-Builder] Mini - UHF Connector
__,_._, Well Eric it is Probably My fault for Actually using The Mini-Uhf Connectors bought at Radio Shack.,Sometimes that is all that's Close when We are in a Hurry . I guess we get what we pay for, I will check out the ones Recommended. Thanks to all who helped direct and on the Group Don KA9QJG ___
Re: [Repeater-Builder] Mini - UHF Connector
Thats funny, I was just reading your original post and when you mentioned tightening with pliers I was about to reply asking if you were using the RS connectors. I have a friend that used those and could never figure out why he had so many problems. Don KA9QJG wrote: __,_._, Well Eric it is Probably My fault for Actually using The Mini-Uhf Connectors bought at Radio Shack.,Sometimes that is all that’s Close when We are in a Hurry . I guess we get what we pay for, I will check out the ones Recommended. Thanks to all who helped direct and on the Group Don KA9QJG ___
RE: [Repeater-Builder] Mini - UHF Connector
I stay away from Radio Shack connectors whenever possible. I had a PL-259 on a jumper that stripped out when I was tightening it HAND-TIGHT onto an SWR meter once. a real piece of crap. R/S overall quality has REALLY suffered over the years. Shame, too, since the other local electronics supply house just went out of business. :-( _ From: Repeater-Builder@yahoogroups.com On Behalf Of Vincent Caruso Thats funny, I was just reading your original post and when you mentioned tightening with pliers I was about to reply asking if you were using the RS connectors. I have a friend that used those and could never figure out why he had so many problems. Don KA9QJG wrote: Well Eric it is Probably My fault for Actually using The Mini-Uhf Connectors bought at Radio Shack.,Sometimes that is all that's Close when We are in a Hurry . I guess we get what we pay for, I will check out the ones Recommended. Thanks to all who helped direct and on the Group Don KA9QJG
RE: [Repeater-Builder] Mini - UHF Connector
All, Over the years I have observed many destroyed Mini-UHF jacks. Most failures were caused by using a Mini-UHF to UHF or N adapter that are about ¾ to 1.5 inches long. These adapters place a tremendous amount of strain on the jack. Most of them will work themselves loose and start chewing the teeth off of the jacks. Mother M makes an adapter cable that has a Mini-UHF male with a short (6 inch) length of RG58U/A cable to a UHF female connector. This would allow a installation that could have the jumper tied up and supported in such a manner to relieve any strain on the jack. I have even used a male Mini-UHF male and a short run of cable to adapt large hard-line cables to a UHF link radio that had a antenna at the 300 ft level of a tower. Worked like a charm Respectfully WA9NE -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Vincent Caruso Sent: Wednesday, April 18, 2007 9:05 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Mini - UHF Connector Thats funny, I was just reading your original post and when you mentioned tightening with pliers I was about to reply asking if you were using the RS connectors. I have a friend that used those and could never figure out why he had so many problems.
Re: [Repeater-Builder] Mini - UHF Connector
The only sure way to keep these silly connectors from coming loose is to use Lock Tight! No other way to keep them on when the radio is installed in heavy equipment and farm vehicles. Just make it permanent and when the radio needs to be removed cut the coax and make a pig tale of it with a decent PL259 or N connector. Dex
Re: [Repeater-Builder] New file uploaded to Repeater-Builder
At 4/17/2007 22:57, you wrote: Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the Repeater-Builder group. File: /dual_level_sq.pdf Uploaded by : skyislandpage [EMAIL PROTECTED] Description : Micor replicant squelch circuit using regular parts You can access this file at the URL: http://groups.yahoo.com/group/Repeater-Builder/files/dual_level_sq.pdf I entered the noise filter portion of the schematic (U2A B) into CircuitMaker ran an AC SPICE analysis. Unless I'm doing something wrong, I see 55 dB of gain @ 7.2 kHz! As expected, the transient response is appalling, with lots of 7.2 kHz ringing for several milliseconds. Plots attached. Bob NO6B JMSquelchFreqResponse.png Description: PNG image JMSquelchTransient.png Description: PNG image
Re: [Repeater-Builder] New file uploaded to Repeater-Builder
Could you do a plot of the filter section of the D-squelch as well? http://f1.grp.yahoofs.com/v1/MNsmRv0oJkZZ_KsrjFmZi-lYDHv4taQ3FPaOT23GOb29aF5tYBtssauw-8yu2MXxYhI92SCCQUTw9DNFccCvFxAqjA/FluX%20Research/D-Squelch/D-Squelch%2004-18-2007.gif On 4/18/07, [EMAIL PROTECTED] [EMAIL PROTECTED] wrote: At 4/17/2007 22:57, you wrote: Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the Repeater-Builder group. File: /dual_level_sq.pdf Uploaded by : skyislandpage [EMAIL PROTECTED] Description : Micor replicant squelch circuit using regular parts You can access this file at the URL: http://groups.yahoo.com/group/Repeater-Builder/files/dual_level_sq.pdf I entered the noise filter portion of the schematic (U2A B) into CircuitMaker ran an AC SPICE analysis. Unless I'm doing something wrong, I see 55 dB of gain @ 7.2 kHz! As expected, the transient response is appalling, with lots of 7.2 kHz ringing for several milliseconds. Plots attached. Bob NO6B Yahoo! Groups Links
Re: [Repeater-Builder] New file uploaded to Repeater-Builder
At 4/18/2007 20:50, you wrote: Could you do a plot of the filter section of the D-squelch as well? http://f1.grp.yahoofs.com/v1/MNsmRv0oJkZZ_KsrjFmZi-lYDHv4taQ3FPaOT23GOb29aF5tYBtssauw-8yu2MXxYhI92SCCQUTw9DNFccCvFxAqjA/FluX%20Research/D-Squelch/D-Squelch%2004-18-2007.gif Document not found error. Bob NO6B
