Re: Sinclair 2037 multicouplers with 220 kHz spacing
I assume the c2037 was ahead (closer to the antenna) of the ham rx of 144.61 on the duplexer on the bottom???? The notch cavity of that c2037 if set to the normal notch depth will add to the loss of the 144.39 signal because of the width of the notch and a bit of bridging loss of the pass can. ?The notch depth should be reduced to narrow the width of the notch. If I remember correctly, the notch should be adjusted to 15dB.?
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I just bought two with the voice board for $100.00
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Re: Sinclair 2037 multicouplers with 220 kHz spacing
Well then I discovered most of my questions were answered a couple days ago.? And the chart confirms my measured isolation of ~35 dB
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Sinclair 2037 multicouplers with 220 kHz spacing
I started a new thread for this as the most relevant was from 2010
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I have a site with a couple of highband vhf repeaters as well as a ham machine on 145.210 -600. One of the highband repeaters is on a duplexer at the bottom of the string with the other highband repeater and the ham repeater(ve6aah) using 2037 multicouplers.? My hope is to use another 2037 to allow APRS on 144.390 which is 220 kHz from the ham repeaters input.? rx/tx would be nice but I would settle for a rx only if I had to.? It has pretty good coverage already with an antenna on the roof of the building but the main antenna would be great.? The 2037 tunes up nicely to 144.390 after changing to 24" inter-cavity cables, with 3.7 dB loss.
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While tuning, I did not adjust the coupling loops although did check the notch depth of each cans port with the other being unterminated, being ~10.5 dB.? Thanks to the various posters from 04/21/10 who suggested that factor and much more.
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As its a mountaintop site, its pretty hard to test and tune in place but I do have a spare 2037 to emulate the repeaters input on the workbench.? Thats getting cabled up now.
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Is what Im trying to do even possible? Excessive losses on the APRS is tolerable.?
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Ross
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hy guys,
how much can i ask for an Zetron Maz 48 these days on the used market!
i need advise ,
thanks
gervais ve2ckn
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Re: Looking for a good working repeater controller that has a link port
I am familiar with that controller. I have two of those. Was trying to find something used that would be quite as much money but decided to pull the trigger on a new one from Ken. So guess I'm not looking for anything at the moment. Chad Nelson WI9HF/WRPL979 Janesville Wisconsin 608-754-8671 Send from my spectrum iPhone 16.
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On May 20, 2025, at 4:39?PM, Pierre Martel via groups.io <petem001@...> wrote:
? Hi Chad,
Regarding your request for a repeater controller with link ports, the Arcom RC210 is user-friendly and meets your requirements. There might be one for sale within the group.
For future expansion and ROIP integration, consider Allstarlink.
Best regards, Pierre On Tue, May 20, 2025 at 5:28?PM Chad Nelson via <chad.nelson71= [email protected]> wrote: Hi, does anyone have a good working repeater controller that would have at least one if not, two link ports as well as a repeater port?
Chad Nelson WI9HF/WRPL979
Janesville Wisconsin
608-754-8671
Send from my spectrum iPhone 16.
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Re: Looking for a good working repeater controller that has a link port
Hi Chad,
Regarding your request for a repeater controller with link ports, the Arcom RC210 is user-friendly and meets your requirements. There might be one for sale within the group.
For future expansion and ROIP integration, consider Allstarlink.
Best regards, Pierre
On Tue, May 20, 2025 at 5:28?PM Chad Nelson via <chad.nelson71= [email protected]> wrote: Hi, does anyone have a good working repeater controller that would have at least one if not, two link ports as well as a repeater port?
Chad Nelson WI9HF/WRPL979
Janesville Wisconsin
608-754-8671
Send from my spectrum iPhone 16.
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Looking for a good working repeater controller that has a link port
Hi, does anyone have a good working repeater controller that would have at least one if not, two link ports as well as a repeater port?
Chad Nelson WI9HF/WRPL979
Janesville Wisconsin
608-754-8671
Send from my spectrum iPhone 16.
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Re: FS: Arcom RC210 Repeater Controller
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Re: FS: Arcom RC210 Repeater Controller
If it's still available, I'll take it. Chad Nelson WI9HF/WRPL979 Janesville Wisconsin 608-754-8671 Send from my spectrum iPhone 16.
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On May 20, 2025, at 1:47?PM, Jacob AD?JA via groups.io <kd0sjv@...> wrote:
? Less than 1 year old Arcom RC210 Repeater Controller for sale. Rev 4.1 board. Has three TX/RX ports and logic input and output. Purchased pre-assembled from Arcom with rack mount case. Has DB9 type connectors on it (not the RJ45 ones).? Works great, no issues.
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Includes pre built interface cable for Kenwood TKR-720 and TKR-820 repeaters, Arcom serial programming cable, and power cable. Does not include screws to hold top cover on rack mount.
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Can provide pictures to anyone interested.
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$370 shipped. PayPal only.
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Email me at this email or email listed on my QRZ page for more info.
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FS: Arcom RC210 Repeater Controller
Less than 1 year old Arcom RC210 Repeater Controller for sale. Rev 4.1 board. Has three TX/RX ports and logic input and output. Purchased pre-assembled from Arcom with rack mount case. Has DB9 type connectors on it (not the RJ45 ones).? Works great, no issues.
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Includes pre built interface cable for Kenwood TKR-720 and TKR-820 repeaters, Arcom serial programming cable, and power cable. Does not include screws to hold top cover on rack mount.
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Can provide pictures to anyone interested.
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$370 shipped. PayPal only.
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Email me at this email or email listed on my QRZ page for more info.
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Re: Yaesu & the crossband limitations?
Before you get too far into this, you may want to look at the FCC Regulations related to identification, and more importantly, remote control.
Mick - W7CAT
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----- Original Message ----- From: "N4FOX via groups.io" To: [email protected]Sent: Tuesday, May 20, 2025 10:52:35 AM Subject: [repeater-builder] Yaesu & the crossband limitations? I was thinking of experimenting with a remote receiver for the DR-2X repeater. Initially I thought using a Yaesu mobile that crossbands for it would be good. I decided to try bench testing this concept with a ftm-500 I use as a mobile.
It seems doable but with limitations. The AMS works for the receiver
side of things fine. It's when it's transmitting what the receiver hears is a bit problematic. It only transmits in analog. Doesn't matter if it's a vfo or memory channel that's presetup to be digital. It spits it out in analog only. I can configure the DR-2X to spit it back out as digital only. Then you will lose other data like the users callsigns for example. Because that's all lost when things are transferred over via the analog link.
Is there a fix or mod for that anyone is aware of? Looks like the
only solution for now would be have another DR-2X as the remote receiver. That's a bit ridiculous cost wise.
If the repeater was analog only that wouldn't be a problem, but it's
run in AMS & uses Wires-X & YSF reflector bridge all digital.
-- Untitled Document
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Re: DB-224-E antenna sources?
Gang,
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I have a Commander Technologies 620-N2, black version, with 3 degrees of electrical down tilt and anther 3 degrees of mechanical down tilt top mounted on a tower on Mt. Wilson.? It's been up for about 4 years and has been trouble-free.
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Burt, K6OQK
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JSR RM3500 automatic modulation meter manual
Date: Mon, 19 May 2025 12:44:52 -03
Does anyone have the manual for the JSR RM3500 automatic modulation meter?
Thank you.
Marcelo F. Ruiz
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I have quite a few amps that were decommissioned recently and need a new home. These have a built in power supply so they are kind of a cool self contained unit. All have been tested and work well. These are tuned for 460MHz but I tested them at 445MHz. If you go
through the effort or re-tuning them you will get slightly better output and lower current consumption. Typical output as follows. 10W In = 110W Out, 7W In = 95W Out, 5W In = 70W Out. Price including shipping to lower 48 is $450. Oh yes, the only thing that doesn't work is the Neon bulb indicating the unit is on. God knows why they used that versus an LED.
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Re: Vertex VXR-7000 power cycling after transmit
It always restarts immediately after it unkeys. It¡¯s fine when it is key-down. Just after it unkeys. This has just started happening within the last few weeks. I may try hooking it up to the Astron and seeing what happens.?
Thanks,
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On May 19, 2025, at 9:36?AM, Jeremy Hansen via groups.io <jeremyhansen27@...> wrote:
I would definitely try external DC power. That will rule out the internal switching supply (but not the board that sits on top of it, I believe it's called the filter board).?
Does the repeater power cycle immediately or only after the transmitter unkeys? Stray RF getting in to the microprocessor is a thought - try running the TX port to a 50 ohm load and see if the condition persists (if you haven't already). The above tests should push you in the right direction.?
Jeremy K1LFK? On Mon, May 19, 2025, 8:08?AM Stephen Slider via <stephenslider= [email protected]> wrote: Hello all,
Our club has a Vertex VXR-7000 VHF repeater that has recently developed a problem. Whenever it finishes transmitting, it always power cycles. This happens both in remote mode with two different controllers (Arcom RC-210 and RLC Club Deluxe II), as well as operating in local mode without a controller.
I¡¯ve read where this might be an issue with the power supply. As of right now, we are running it off AC power. The thought crossed my mind of hooking it up to the big 70amp Astron up there with the Battery terminals on the Vertex and seeing if that cures the issue.
Any ideas?
Thanks,
Stephen KG4PTO
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Re: Kenwood TK790 problems
Agreed. Had the same issue before.
Dab a little dielectric grease on all pins to help keep clean and prevent oxidation.
Benjamin, KB9LFZ?
Reseat the control cables, they can get dirty and cause issues. Remember they¡¯ve used these radios in fire trucks and Baja racers along with other trucks that have dirt and grime, they work until moved, I¡¯d reseat the connectors especially in the control head where the cable has a white multi wire plug and the cap goes over to protect the inside.
Good luck, On May 18, 2025, at 10:32?PM, Howard <n9ktw@...> wrote:
? Hey guys have a couple of Kenwood TK790's with the same problems. 1 is installed in a truck for several years , and the truck is driven by 1 foreman who is a trusted and valued foreman. The other was pulled froma truck we decommissioned. The removal was done by our company owner who is a fellow ham and has done several of the installs himself over the years.
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The problem is that there is no transmit audio. Both radios are remote mount, and the mics have been tested on known good radios and are working fine. I was told that the control heads have been swapped and the problem persists.?? I Have not as of yet done any testing on the radio that is installed, as the guy whose truck it is in wasnt available today.
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Does anyone have any ideas...... I personally am leaning toward a bad interconnect cable, but as these radio are a bit older I am trying NOT to just be a "parts changer" and buy new remote cables on a guess.
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Howard
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Looking for RLN5933 in-dash bracket
I am looking for several RLN5933 in-dash brackets for the XPR4000 series radios to finish off a project.
This is a bracket that fits into a single DIN dash opening in a standard vehicle.
Apparently Motorola has discontinued this item.
I am aware of other methods of accomplishing the same result.
If you have any available, please reply directly to mengle@...
Thanks
Milt
N3LTQ
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Re: DB-224-E antenna sources?
Prices have gone up, but if you're not logged into Tessco, you're going to see rack rate -?
On Mon, May 19, 2025 at 8:44?AM Kevin Berlen via <kevin.berlen= [email protected]> wrote: And...quality has gone down...
Thanks Chris, If you stumble over one let me know.?
Ya seems Andrew has changed hands a few times and prices went up every time.?
Kory
W4RZ
On 2025-05-18 13:59, Chris Boone WB5ITT via wrote:
Sinclair does not produce the DB224e or any of the DB224s. That is now done by Andrew/ whoever owns them this week anyway. Sinclair makes a folded dipole similar but not exactly like the DB224
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Chris WB5ITT?
Hate to bump a old thread, but I was looking at some info on the Sinclair DB224-E. I sure wish the prices seen in this thread roughly a year ago, were still true HAHA.?
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prices sure have changed!!
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Re: DB-224-E antenna sources?
And...quality has gone down...
Thanks Chris, If you stumble over one let me know.?
Ya seems Andrew has changed hands a few times and prices went up every time.?
Kory
W4RZ
On 2025-05-18 13:59, Chris Boone WB5ITT via wrote:
Sinclair does not produce the DB224e or any of the DB224s. That is now done by Andrew/ whoever owns them this week anyway. Sinclair makes a folded dipole similar but not exactly like the DB224
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Chris WB5ITT?
Hate to bump a old thread, but I was looking at some info on the Sinclair DB224-E. I sure wish the prices seen in this thread roughly a year ago, were still true HAHA.?
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prices sure have changed!!
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Wayne Childers
Gervais Fillion
Pierre Martel
Burt K6OQK
Marcelo Ruiz
KB9LFZ