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WTB: OEM Cellwave 526-4-2 harness set
Does anyone have a factory new old stock Cellwave 526-4-2 factory made oem harness set they want to sell? I'm looking for a set for this duplexer I got that someone converted to some kind of band pass filter. Or can someone manufacture a harness for set for me? I have attached a picture of duplexer for reference. Someone thought they might have a set but I haven't heard back from the person so I'm scoping out alternatives in case this person falls through. I will want to see pictures of harness set and I use PayPal for payment. Thanks Robert Kc8gpd Wrcm325 Scottsbluff NE |
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Re: Decibel DB4060 Series Duplexers
开云体育The DB4060/4062 series had five different loop assemblies.? Depending on the bandsplit (there are three) and whether the loop is used for high-pass/low-reject versus low-pass/high-reject determines which of the five loop assemblies is needed.? Or to say it another way, for any given bandsplit, two of the five loop assemblies are needed, one type for the high-pass leg and one type for the low-pass leg. ? If the OP will email me what model or frequency range the duplexer is as it stands, I can tell them what to do to convert it to ham band.? I can also provide loops to replace the ones that need to be changed; the trimmer caps are the same regardless so you just need to replace the loop itself.? I can provide cable lengths and other details as well. ? ??????????????????????????????????????????????????????????????????????????????????????????????? --- Jeff WN3A ? |
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Re: Grounding with a tower glued to the top
I'm working on a project where the ham station is in the mezzanine of a warehouse where theOK. The entire building has a ground rod ring around it that are connected to a 6" copper strap thatWhy isn't it connected to the building? Are you saying the ground ring around the building is there only as a ground for the shack? If it isn't not bonded to the electrical service ground, that is a code violation, and is bad in several other ways. The copper ground strap comes up along the outside side of the building, galvanically isolated, through a plastic tube and junction box, into the shack.This is crazy. The ground ring is a grounding electrode and MUST be bonded to, and become part of, the service ground. The service ground MUST be bonded to the building steel; hopefully it already is, but verify. The structural steel of the building is a MUCH MUCH MUCH lower-resistance and lower-inductance path to ground than a piece of copper strap. And, per above, if that ground ring isn't bonded to the service ground, it's only creating new problems. The building steel should be used as the grounding conductor for the tower, master ground bar, etc. en route to the ground electrodes. In some cases, the building steel can also serve as a grounding electrode (i.e. in addition to, or as a replacement for, other electrodes such as ground rods, cold water pipes, ground rods, et al), but without knowing the construction of the building and foundation I wouldn't blindly count on that, so just treat the building as a grounding conductor and not as an electrode. To summarize: Bond the ground ring to the service ground per NEC. The ground ring becomes an additional grounding electrode. Bond your master ground bar in the shack to building steel using listed clamps. Bond all of the radio equipment, arrestors, etc. to the master ground bar. It sounds like the tower is already directly connected to structural steel from a mechanical standpoint, but to be compliant, there should be a grounding conductor between the tower and building steel (yeah, I know, seems like overkill). All feedlines on the tower should have ground kits at the top and bottom of the cable runs, and again at the point of entry into the building if not immediately at the tower base. If the point of entry isn't at or near the master ground bar above, add another ground bar at the entry point for the ground kits, and bond it to the building steel in the same manner as the MGB. --- Jeff WN3A |
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Re: weird issue
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On Apr 11, 2025, at 09:08, Butch-tiny puppy via groups.io <wa0vjr@...> wrote:
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Grounding with a tower glued to the top
I am seeking advice where the RF feedline grounding/lightning arrestor block should be mounted to. I'm working on a project where the ham station is in the mezzanine of a warehouse where the tower was installed on TOP of the roof, with a seriously over-engineered mount in the middle of the building metal structure. The entire building has a ground rod ring around it that are connected to a 6" copper strap that? does not NOT contact to the building. Near the coax entry point there is a building structural I-beam. The copper ground strap comes up along the outside side of the building, galvanically isolated, through a plastic tube and junction box, into the shack. So, for best lightning/EMP protection: 1. should the ground strap be sandwiched between the building i-beam and the ground block, or, 2. should the ground block be connected to the copper strap secured by some kind of isolating material from the metal building? If typing words is not your forte'; email direct for my cell number. Benjamin, KB9LFZ |
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Re: weird issue
开云体育You often have to tell it specificly to use that
card as it sees the usb device as another sound card.?
----- Original Message -----
Sent: Friday, April 11, 2025 7:02 AM
Subject: Re: [repeater-builder] weird issue It uses the internal one normally ? From: [email protected] <[email protected]>
On Behalf Of Butch-tiny puppy via groups.io ? You probably need to tell jaws what doundcard to use.? ? Butch Bussen
----- Original Message ----- Sent: Friday, April 11, 2025 6:45 AM Subject: [repeater-builder] weird issue ? Hi, ? I hope someone can help me figure out an issue. I am trying to use a West Mountain Radio Rigblaster plug and play sound card interface to run echolink. ? The issue I am running into is that I use JAWS a screenreader that reads text outloud from the computer since I am totally blind. When I have my nomic working JAWS talks fine and everything is happy but when I connect the plug and play, I get the usual computer sounds out of my speaker, but JAWS doesn’t talk, (so I can’t do anything if it doesn’t read to me what is on eht screen). ? Does anyone have any ideas or how to make an external sound card play nice together with the internal one. ? I would be happy to use the internal card for JAWS, and use the USB card to run the plug and play, but I run into the same issue with the USB sound card. ? Thanks, ? Chad |
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Re: weird issue
开云体育It uses the internal one normally ? From: [email protected] <[email protected]> On Behalf Of Butch-tiny puppy via groups.io
Sent: Friday, April 11, 2025 7:58 AM To: [email protected] Subject: Re: [repeater-builder] weird issue ? You probably need to tell jaws what doundcard to use.? ? Butch Bussen ----- Original Message ----- Sent: Friday, April 11, 2025 6:45 AM Subject: [repeater-builder] weird issue ? Hi, ? I hope someone can help me figure out an issue. I am trying to use a West Mountain Radio Rigblaster plug and play sound card interface to run echolink. ? The issue I am running into is that I use JAWS a screenreader that reads text outloud from the computer since I am totally blind. When I have my nomic working JAWS talks fine and everything is happy but when I connect the plug and play, I get the usual computer sounds out of my speaker, but JAWS doesn’t talk, (so I can’t do anything if it doesn’t read to me what is on eht screen). ? Does anyone have any ideas or how to make an external sound card play nice together with the internal one. ? I would be happy to use the internal card for JAWS, and use the USB card to run the plug and play, but I run into the same issue with the USB sound card. ? Thanks, ? Chad |
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Re: weird issue
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----- Original Message -----
Sent: Friday, April 11, 2025 6:45 AM
Subject: [repeater-builder] weird issue Hi, ? I hope someone can help me figure out an issue. I am trying to use a West Mountain Radio Rigblaster plug and play sound card interface to run echolink. ? The issue I am running into is that I use JAWS a screenreader that reads text outloud from the computer since I am totally blind. When I have my nomic working JAWS talks fine and everything is happy but when I connect the plug and play, I get the usual computer sounds out of my speaker, but JAWS doesn’t talk, (so I can’t do anything if it doesn’t read to me what is on eht screen). ? Does anyone have any ideas or how to make an external sound card play nice together with the internal one. ? I would be happy to use the internal card for JAWS, and use the USB card to run the plug and play, but I run into the same issue with the USB sound card. ? Thanks, ? Chad |
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weird issue
开云体育Hi, ? I hope someone can help me figure out an issue. I am trying to use a West Mountain Radio Rigblaster plug and play sound card interface to run echolink. ? The issue I am running into is that I use JAWS a screenreader that reads text outloud from the computer since I am totally blind. When I have my nomic working JAWS talks fine and everything is happy but when I connect the plug and play, I get the usual computer sounds out of my speaker, but JAWS doesn’t talk, (so I can’t do anything if it doesn’t read to me what is on eht screen). ? Does anyone have any ideas or how to make an external sound card play nice together with the internal one. ? I would be happy to use the internal card for JAWS, and use the USB card to run the plug and play, but I run into the same issue with the USB sound card. ? Thanks, ? Chad |
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Tait TB8100 CWID Configuration
I've got a TB8100 in GMRS service.? I want to of course provide proper ID, but as I share the channel with another system, I do not want the ID to beacon, just politely properly ID routinely after use of the system. In the CWID System tab, pretty sure I do not want Automatic CWID checked - but ID after some period of local system use would be done via a Task Manager configuration? Examples, screen shots welcome. |
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Re: In search of dB4060 -005 coupling loops or assemblies
开云体育Is this them?? Duplexer Repair is a service division of?. Duplexer Repair performs repairs, refurbishing, and tuning of a wide variety of duplexers and cavity filters. From small UHF duplexers to large HF cavities. We also offer on-site tuning of duplexers and filters within a reasonable travel distance on a per job basis — call us at?(334) 787-9005?to discuss on-site work, or drop us an email at?service@.... Kory On 2025-04-10 13:41, Gerald Lucha via groups.io wrote:
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In search of dB4060 -005 coupling loops or assemblies
开云体育Kevin has given me a lot of help tuning the overpainted and unknowndB4060 diplexer.? It is smelling a lot like they are not the ham band model.? If anyone has up to date contact info on the firm called duplexerrepair.com I would greatly appreciate it.? If anyone has extra -005 coupling assemblies, please let me know, off list. Jerry W6OJE? gvlucha@... |
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Re: Duplexer for amateur 70-cm band
I agree.? They are false economy.? The only protection that they give the receiver from transmitter power is a very sharp notch.? Burn up the teflon, loose the notch tuning, and you have the chance of the up to 50 watts getting back into your receiver.
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On 4/10/2025 10:38 AM, Harold Farrenkopf via groups.io wrote:
Mobile compact duplexers are for low power use at best. ?They burn up if used for continuous repeater transmission and high power. ?I’ve seen 50 watts burn up the teflon end dielectric tuning screw supports. |
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Re: VHF Duplexer Identification
Regarding the height:? The cans are 8 inches in diameter, and they are 21" tall.? The stated height does not include the tuning rods and other projections.
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Regarding the range: I do not know what frequency range (A, B or C) these were designed for.? They are currently tuned to TX=147.360 and RX=147.960 with the performance stated in my initial post.
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If I wanted to add a can to each channel, will I need to find one pass low / block high and one pass high / block low can?? That is the case with my TXRX duplexers unless I want to change a loop.? I found a few pass low block high cans that seem to be the same as these, but none that are advertised as pass high / block low.
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Thanks!
Jeff |
KB9LFZ
Jared Smudde