Interesting, is that a 2 element Yagi with the driven element that gets snuggled up close to the mast then a director out front? If so they are not relying on the mast as a reflector as it looks like the mounting bracket goes on top of a mast leaving the hot side of the driven element above the mast.?
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Show quoted text
On Mar 27, 2025, at 13:29, Roger willey via groups.io <kc4jnn@...> wrote:
?
This Message is From an External Sender
This message came from outside your organization.
I think they should be on the same side of the tower 12 feet apart. My frequency is ?53.050 input is 52.050?
On Mar 27, 2025, at 2:56?PM, John via groups.io <jhaserick84@...> wrote:
?
?
If the coax to the T is 50ohms, then yes , an electrical 1/4 wavelength of 35 ohm coax from the T to the feedline. You could? less ideally alternatively do two? 1/4 wavelength 75 ohm coaxial cables in parallel
. Try to use polyethylene jacketed coax for longer life.. Both 50 coaxial cable antenna pigtails need to be the same length, but can be any length.? ?
I recommend mounting both antennas on the same tower leg.Those UHF T connectors are difficult to waterproof. without using butyl rubber under Scotch 88. First tape one layer of 88 , then squeeze and mold the butyl rubber, then 2 layers of 88 on the outside,
to make it easier to remove the butyl rubbber when it eventually gets disassembled. Messi and Paolini in Italy make great 75 ohm direct bury type coax, if you are forced to go that route.
?
John
?
?
?
?
?
?
?
?
?
?
?
if the?
On 03/27/2025 12:32 PM EDT Roger willey via groups.io <kc4jnn@...> wrote:
?
?
?
Begin forwarded message:
From: Roger willey <kc4jnn@...>
Date: March 26, 2025 at 2:45:40?PM EDT
To: [email protected]
Subject: 6 m repeater antenna
I have a 6 m folded dipole antenna, two of them with coaxial lines going to a T what length of cable should I use out of the T to get The impedance and the length? I was thinking maybe 35 Ohm
WARNING: Do not click links or attachments unless you recognize
the sender and know the email is safe.
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Re: Icom FR4000-3 Repeater
I've had some progress tonight. Two simple mistakes I should have avoided.
First, the mini-stereo socket I used for the homemade OPC-592 adapter was a mono jack. The third pin was for audio muting upon jack insert, not a contact for the center ring. I should have caught that.?
Second, I discovered that I have the "CS-F3000" software but need "CS-FR3000" . Icom could have made the distinction between the two a little better, but I digress.?
So now I'm in pursuit of CS-FR3000 v1.4t hat Icom no longer offers. Hopefully more progress once I can source the proper program.?
Jeremy K1LFK?
On Thu, Mar 27, 2025, 10:33?PM Scott Haney via <11c30usaret= [email protected]> wrote: Sorry I can't solve your issue, but any Icom gurus responding to you may know about my "Revision B" problem when I try to read one of ,my IC-4000-3 machines. I ended up using it as a donor for parts to get two other ones running.
Scott? K7SAH
On Thu, Mar 27, 2025 at 4:41?PM Jeremy Hansen via <jeremyhansen27= [email protected]> wrote: Good evening all,?
I'm having difficulty reading two (very dirty) Icom FR-4000-3 repeaters that I recently acquired for rehab. My software is CS-F3000 version 1.1 and I am using a genuine OPC-478 cable with a homemade OPC-592 (mini-stereo to RJ-45) adapter. PC is Windows 10 with a known good usb-serial adapter. I've double checked the simple two-wire adapter pin out and am confident I have RJ-45 pins 2 and 7 properly terminated to the ring and sleeve of the mini-stereo.?
No communication between the radio and software. Is there anything special about putting the FR3/4000 series repeaters in "clone" or programming mode? No specific guidance in the owners and service manuals other than indicating power-on is all that's required (unless entering service mode, which has separate instructions).?
Any insights are greatly appreciated.?
Jeremy K1LFK?
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Re: WACOM WP-641 vs. Sinclair Q2330E
At 3/27/2025 03:27 PM, you wrote:
I have both of these duplexers
available
to replace an existing system.? The site
itself is a water tower with an existing DB224 that has been made
available to me.? It is mounted at the
very top-center of the tank.?
There is a backup fire department repeater at
the site
on UHF.? I don’t even think it’s plugged
in.
The tower also has 5G panels mounted all the
way around the perimeter.
Given that space is not a
consideration and all things being
equal, which of the subject duplexers
would you choose to put behind an MSR-2000 running 50
– 60 watts out of the PA?? I have
experience with the WP-641, but not the
Sinclair.
I recommend the WP-641.
Bob NO6B
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Re: Icom FR4000-3 Repeater
Sorry I can't solve your issue, but any Icom gurus responding to you may know about my "Revision B" problem when I try to read one of ,my IC-4000-3 machines. I ended up using it as a donor for parts to get two other ones running.
Scott? K7SAH
On Thu, Mar 27, 2025 at 4:41?PM Jeremy Hansen via <jeremyhansen27= [email protected]> wrote: Good evening all,?
I'm having difficulty reading two (very dirty) Icom FR-4000-3 repeaters that I recently acquired for rehab. My software is CS-F3000 version 1.1 and I am using a genuine OPC-478 cable with a homemade OPC-592 (mini-stereo to RJ-45) adapter. PC is Windows 10 with a known good usb-serial adapter. I've double checked the simple two-wire adapter pin out and am confident I have RJ-45 pins 2 and 7 properly terminated to the ring and sleeve of the mini-stereo.?
No communication between the radio and software. Is there anything special about putting the FR3/4000 series repeaters in "clone" or programming mode? No specific guidance in the owners and service manuals other than indicating power-on is all that's required (unless entering service mode, which has separate instructions).?
Any insights are greatly appreciated.?
Jeremy K1LFK?
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Re: Astro Spectra programming help
Tim,
I sent you a reply to your last request prior to seeing this - I suspect it answered some of your questions here.?
?
You program using the 25 pin receptacle through the handle.? Aftermarket "ribless" cables exist which have the RIB built into the connector backshell, but the original style ones need your RIB.
?
Good luck - Kurt
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IC FR4000 flat audio for MMDVM and DMR conversion?
I never worked with an IC FR4000 and I had a request to help a group of ham make a DMR repeater from a FR4000.
?
To do it, we need to have flat audio in and out. and I was able to find the information for the TX section. But the RX I am not sure.?
?
?
the way I see it, Pin 9 is ok for the TX side??
and pin 12 is ok for the RX side??
?
Anyone ever used that repeater for DMR?
?
Thanks
?
Pierre VE2PF
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?
Yep, that will work fine as a minimum center to center distance on 6M. Just no guy wires between or within 5 ft of the antenna elements, especially above the top element. (We were forced to have guys between a pair of DB212 side mount dipoles, and that lowered the frequency of the array after the two antennas were combined, so SWR went up on the high frequency TX side to 1.5 from 1.1SWR with the antenna elements originally individually set for resonance at 20% of the 1 MHz TX to RX frequency spread below the TX freq, 80% above the RX freq. in your case, 52.8 MHz.)
?
John
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9.
On 03/27/2025 4:28 PM EDT Roger willey via groups.io <kc4jnn@...> wrote:
?
?
I think they should be on the same side of the tower 12 feet apart. My frequency is ?53.050 input is 52.050?
On Mar 27, 2025, at 2:56?PM, John via groups.io <jhaserick84@...> wrote:
?
If the coax to the T is 50ohms, then yes , an electrical 1/4 wavelength of 35 ohm coax from the T to the feedline. You could? less ideally alternatively do two? 1/4 wavelength 75 ohm coaxial cables in parallel . Try to use polyethylene jacketed coax for longer life.. Both 50 coaxial cable antenna pigtails need to be the same length, but can be any length.? ?
I recommend mounting both antennas on the same tower leg.Those UHF T connectors are difficult to waterproof. without using butyl rubber under Scotch 88. First tape one layer of 88 , then squeeze and mold the butyl rubber, then 2 layers of 88 on the outside, to make it easier to remove the butyl rubbber when it eventually gets disassembled. Messi and Paolini in Italy make great 75 ohm direct bury type coax, if you are forced to go that route.
?
John
?
?
?
?
?
?
?
?
?
?
?
if the?
On 03/27/2025 12:32 PM EDT Roger willey via groups.io <kc4jnn@...> wrote:
?
?
?
Begin forwarded message:
From: Roger willey <kc4jnn@...>
Date: March 26, 2025 at 2:45:40?PM EDT
To: [email protected]
Subject: 6 m repeater antenna
I have a 6 m folded dipole antenna, two of them with coaxial lines going to a T what length of cable should I use out of the T to get The impedance and the length? I was thinking maybe 35 Ohm
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Re: WTB: 107.2 Hz Vibrasender
Mike,
I have 3 of them.?? I will send you a direct email
On Thu, Mar 27, 2025 at 8:34?PM Mike Besemer - WM4B via <mwbesemer= [email protected]> wrote:
I’m looking for a 107.2 Hz Vibrasender for an MSR2000.? It looks like either the KLN6210 or KLN6824 should work.
73,
Mike
WM4B
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Re: WACOM WP-641 vs. Sinclair Q2330E
The WACOM WP-641 provides 93 dB of
rejection at 1.5dB of insertion loss at 600 kHz - if it's a UHF
connector version.? If it's an N connector version the rejection
is 91 dB or so (yes it's less).? It's easy to tune with simple
equipment.? If the cavity interconnect cables say "Modified RG214"
you should consider replacing that cable with real RG214/U.? While
the cable supplied is double shielded - it's not silver plated.
The Sinclair Q2330e provides nearly 100dB of rejection at 1.5dB of
insertion loss at 600 kHz.? This duplexer is considerably more
difficult to tune, requiring a VNA (or RLB) to set the pass
frequencies.
You don't state what your receive sensitivity is, or whether or
not you're going to use a preamp.? If not - either duplexer is
sufficient for the MSR-2000.? If you want more reserve isolation -
use the Sinclair.
Kevin W3KKC
On 3/27/2025 6:27 PM, Mike Besemer - WM4B via groups.io wrote:
toggle quoted message
Show quoted text
I have
both of these duplexers available to
replace an existing system.? The site itself is a
water tower with an existing DB224 that has been made available
to me.? It is mounted at the very
top-center of the
tank.? There is
a backup fire department repeater at the
site on UHF.? I don’t
even think it’s
plugged in.
The tower
also has 5G panels mounted all the way around the perimeter.
Given that
space is not a consideration
and all things being equal, which of the subject
duplexers would you choose to put behind an MSR-2000 running
50 –
60 watts out of the PA?? I have experience with the
WP-641, but not the Sinclair.
73,
Mike
WM4B
|
WTB: 107.2 Hz Vibrasender
I’m looking for a 107.2 Hz Vibrasender for an MSR2000.? It looks like either the KLN6210 or KLN6824 should work.
73,
Mike
WM4B
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Astro Spectra programming help
Hello Group,
I thought this task would be easy. But the more I delve into the programming the more confused I become.
Here is my situation.
*Radio* Astro Spectra-T04KLF9PW4AN (1 meg 2.5 kHz) I don't believe this to be a Spectra+
*Control Head* W4? Fully connected to transceiver Power cable also connected. All cables connected as when radio was in vehicle.
*Computer* Win 7, 32 bit laptop with one USB 1 port and 9 pin serial port.
*Motorola RIB* I have a real Motorola RIB. DO I REQUIRE IT?
*Programming Cable* DO I REQUIRE A RIBLESS CABLE?? What cable # and where do I connect radio end? With control head cable connected to radio I have one 25 pin female connector between the handle on the radio. Is the programming cable connected to that or does it connect to control head?
*Programming Software* My information tells me that I require CPS 5.02.xx or 5.03.00 . I see the CPS is readily available but if some good hearted soul could mail me the CPS (if it's legal) I'd be happy to reimburse time and postage.
?
I'm tearing my hair out and I only plan on programming six or seven VHF NB repeater fxs. and a few "Talkaround" channels.
Appreciate any and all help.
Tim Hardy
AE7TH
Vashon Is. Wa.
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Re: WACOM WP-641 vs. Sinclair Q2330E
I still love my WACOM WP 641 that I bought new back in 1983.. It's been retuned a couple of times to new frequencies and it floated in tropical storm Harvey water for almost 3 weeks as the site was underwater totally. Still working just fine according to my analyzer... Kit made some good products at reasonable prices... I've dealt with Sinclair as well and they're all right. I don't think a 0.1 DB is going to make any difference on the air
Kind of a tossup, similar specs for isolation @500KHz but the Sinclair advertises .1dB less insertion loss per leg. The Sinclair seems to be a current product where the Wacom would be getting quite old.?
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Re: WACOM WP-641 vs. Sinclair Q2330E
Kind of a tossup, similar specs for isolation @500KHz but the Sinclair advertises .1dB less insertion loss per leg. The Sinclair seems to be a current product where the Wacom would be getting quite old.?
|
Good evening all,?
I'm having difficulty reading two (very dirty) Icom FR-4000-3 repeaters that I recently acquired for rehab. My software is CS-F3000 version 1.1 and I am using a genuine OPC-478 cable with a homemade OPC-592 (mini-stereo to RJ-45) adapter. PC is Windows 10 with a known good usb-serial adapter. I've double checked the simple two-wire adapter pin out and am confident I have RJ-45 pins 2 and 7 properly terminated to the ring and sleeve of the mini-stereo.?
No communication between the radio and software. Is there anything special about putting the FR3/4000 series repeaters in "clone" or programming mode? No specific guidance in the owners and service manuals other than indicating power-on is all that's required (unless entering service mode, which has separate instructions).?
Any insights are greatly appreciated.?
Jeremy K1LFK?
|
WACOM WP-641 vs. Sinclair Q2330E
I have both of these duplexers available to replace an existing system.? The site itself is a water tower with an existing DB224 that has been made available to me.? It is mounted at the very top-center of the tank.? There is a backup fire department repeater at the site on UHF.? I don’t even think it’s plugged in.
The tower also has 5G panels mounted all the way around the perimeter.
Given that space is not a consideration and all things being equal, which of the subject duplexers would you choose to put behind an MSR-2000 running 50 – 60 watts out of the PA?? I have experience with the WP-641, but not the Sinclair.
73,
Mike
WM4B
|
I think they should be on the same side of the tower 12 feet apart. My frequency is ?53.050 input is 52.050?
toggle quoted message
Show quoted text
On Mar 27, 2025, at 2:56?PM, John via groups.io <jhaserick84@...> wrote:
?
?
If the coax to the T is 50ohms, then yes , an electrical 1/4 wavelength of 35 ohm coax from the T to the feedline. You could? less ideally alternatively do two? 1/4 wavelength 75 ohm coaxial cables in parallel . Try to use polyethylene jacketed coax for longer life.. Both 50 coaxial cable antenna pigtails need to be the same length, but can be any length.? ?
I recommend mounting both antennas on the same tower leg.Those UHF T connectors are difficult to waterproof. without using butyl rubber under Scotch 88. First tape one layer of 88 , then squeeze and mold the butyl rubber, then 2 layers of 88 on the outside, to make it easier to remove the butyl rubbber when it eventually gets disassembled. Messi and Paolini in Italy make great 75 ohm direct bury type coax, if you are forced to go that route.
?
John
?
?
?
?
?
?
?
?
?
?
?
if the?
On 03/27/2025 12:32 PM EDT Roger willey via groups.io <kc4jnn@...> wrote:
?
?
?
Begin forwarded message:
From: Roger willey <kc4jnn@...>
Date: March 26, 2025 at 2:45:40?PM EDT
To: [email protected]
Subject: 6 m repeater antenna
I have a 6 m folded dipole antenna, two of them with coaxial lines going to a T what length of cable should I use out of the T to get The impedance and the length? I was thinking maybe 35 Ohm
|
?
If the coax to the T is 50ohms, then yes , an electrical 1/4 wavelength of 35 ohm coax from the T to the feedline. You could? less ideally alternatively do two? 1/4 wavelength 75 ohm coaxial cables in parallel . Try to use polyethylene jacketed coax for longer life.. Both 50 coaxial cable antenna pigtails need to be the same length, but can be any length.? ?
I recommend mounting both antennas on the same tower leg.Those UHF T connectors are difficult to waterproof. without using butyl rubber under Scotch 88. First tape one layer of 88 , then squeeze and mold the butyl rubber, then 2 layers of 88 on the outside, to make it easier to remove the butyl rubbber when it eventually gets disassembled. Messi and Paolini in Italy make great 75 ohm direct bury type coax, if you are forced to go that route.
?
John
?
?
?
?
?
?
?
?
?
?
?
if the?
On 03/27/2025 12:32 PM EDT Roger willey via groups.io <kc4jnn@...> wrote:
?
?
?
Begin forwarded message:
From: Roger willey <kc4jnn@...>
Date: March 26, 2025 at 2:45:40?PM EDT
To: [email protected]
Subject: 6 m repeater antenna
I have a 6 m folded dipole antenna, two of them with coaxial lines going to a T what length of cable should I use out of the T to get The impedance and the length? I was thinking maybe 35 Ohm
|
Got a picture? Is it a DB212-2 or home brew or what???
Begin forwarded message:
?I have a 6 m folded dipole antenna, two of them with coaxial lines going to a T what length of cable should I use out of the T to get The impedance and the length? I was thinking maybe 35 Ohm
|
toggle quoted message
Show quoted text
From: Roger willey <kc4jnn@...> Date: March 26, 2025 at 2:45:40?PM EDT To: [email protected]Subject: 6 m repeater antenna
?I have a 6 m folded dipole antenna, two of them with coaxial lines going to a T what length of cable should I use out of the T to get The impedance and the length? I was thinking maybe 35 Ohm
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Hudson, John@CalOES
Pierre Martel
Kevin Custer
Mike Besemer - WM4B
Chris Boone WB5ITT