Attempting to program a Maxon SM2150. Looking for proper prog cable. Have software.
Attempting to program a Maxon SM2150. I have software but having a tough time locating a programming cable.
The information I find tells me the SM 2000 series requires Maxon SMP 2000 programming cable.
I'm prepared to purchase a cable (or borrow).
It is my understanding that the prog. cable plugs into the mike socket (RJ). My SM 2150 has a 15 pin connector directly above the +12 VDC wires. Would this be a prog. connection? I have no info on this connector. Having the rear connector confuses things.
I'm not certain whether the radio programs thru the mic. connector or the rear connector. If the rear connector is for programming, then the SMP2000 would be an incorrect cable.
Hopefully someone will have an answer.
?
Tim
AE7TH
Vashon Is. Wa.
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Attempting to program a Maxon SM2150. Can't locate programming cable
Hello,
Attempting to program a Maxon SM2150. I have software but having a tough time locating a programming cable.
The information I find tells me the SM 2000 series requires Maxon SMP 2000 programming cable.
I'm prepared to purchase a cable (or borrow).
It is my understanding that the prog. cable plugs into the mike socket (RJ). My SM 2150 has a 15 pin connector directly above the +12 VDC wires. Would this be a prog. connection? I have no info on this connector. Having the rear connector confuses things.
I'm not certain whether the radio programs thru the mic. connector or the rear connector. If the rear connector is for programming, then the SMP2000 would be an incorrect cable.
Hopefully someone will have an answer.
?
Tim
AE7TH
Vashon Is. Wa.
?
|
Re: Kenwood NXR 810 repeater
Hi Bob
It requires their KPG-129DK software and just a regular ol' serial
connection to its back panel DB25
Ken
At 02:15 PM 4/4/2025, you wrote:
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Show quoted text
Hello everyone
Question regarding a NXR810 repeater,
What cables & software are needed to reprogram the repeater, also
dose Kenwood use an interface box like the older Motorola rib box?.
Thanks
Bob KD6GNB
------------------------------------------------------------------------------
President and CTO - Arcom Controllers
Makers of repeater controllers and accessories
Phone: (503) 678 6182
Authorized Dealers for Kenwood and Telewave.
We offer complete turn-key repeater packages!
"We don't just make 'em. We use 'em!"
![[]](http://www.arcomcontrollers.com/arcom.png)
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Hello everyone
Question regarding a NXR810 repeater,
What cables & software are needed to reprogram the repeater, also dose Kenwood use an interface box like the older Motorola rib box?.
Thanks
Bob KD6GNB
|
Re: Capacitors in DB4332B and DB4333B
About a year later after that I needed two additional UHF LPFs and did build
two additional clones that also worked perfectly. The attached picture shows
the original LPF at the top, and one of my clones in the blue box at the
bottom. Nice clean work there. I'll make a suggestion, and it's not specific to this project, but one of those "makes perfect sense" things that applies in many cases where you have high-level RF through multiple inductors in series such as in an LC low-pass filter: Wind all of the inductors on one contiguous piece of wire. You greatly reduce the risk of a solder joint failure due to overheating or thermal cycling with the wire carrying most of the current rather than the solder joint doing it. --- Jeff WN3A
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Re: Capacitors in DB4332B and DB4333B
About 3 years back I had one DB4332-B UHF low pass filer but needed two, so decided to reverse engineer it and build a clone. The variable piston capacitors are Johanson 0.8 - 10Pf rated at 150V. Back then I found several sellers on ebay offering them, and there was one selling them in 4 packs for $25 plus some shipping. The trimmer cap model I used was PC25J100. The model is stamped onto the top solder side of the cap, so usually not possible to see in the original LPF. Just checked on ebay but original listing is gone, however looks like listing #256220267439 is the same guy still offering those trimmer caps in packs of 4 still at the same price.
The 3 coils are made of #18 wire, one side being 2T, the middle one 3.5T and the last one again 2T. Coil diameter is 7/32 or about 5.55m, stretched out same as the original coils.
I also managed to find on ebay someone selling the identical metal boxes (Pomona model 2413) for $10-15 new old stock in the original bag and with connectors on each end, but these instead had one SO-239 and one PL259, which both where very easy to replace with NM/NF. I then also had to drill the four holes to mount the trimmer caps and assemble everything. The clone LPF was then checked on a VNA and compared to the original DB4332 and it had basically identical characteristics as the original one, and of course also tuned up just fine.
About a year later after that I needed two additional UHF LPFs and did build two additional clones that also worked perfectly. The attached picture shows the original LPF at the top, and one of my clones in the blue box at the bottom.
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Re: F/S TPL PA6-1AE UHF amp
Not a problem with 100w into the cable and only 30w dissipated over 18ft of RG-142, and the connectors would be usually be heatsinked to a chassis of some sort anyway. Belden RG-142 is rated up to 1,100w at 400MHz where it would eventually reach 200deg C (392deg F) and possibly melt 60/40 solder depending on connector heatsinking. I wish I had an amplifier to test that some day.?
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Re: UHF Repeater Input Frequency Issues
Unlike the CATV world, where splitters are common and a splitter can have a variety of different drop/tap levels, splitters are not as frequently used, and when they are, the are usually referred to as power dividers. The goal being, equal division of power to two or more antennas. Additionally, “splitting” requires attention to impedance. ? If you find what appears to be a “4 port splitter” at a ham fest, it probably isn’t. Generally these are a hybrid, used to combine amplifiers or perform a 90 degree phase shift (for circular polarization.) Similarly, at a recent fest I found a single load isolator (3 port) with no labeling that was tagged “splitter” by the seller. So be cautious if you don’t know exactly what a device is – many do not. ? Matt AL0R ?
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From: [email protected] <[email protected]> On Behalf Of Jason Weisberger via groups.io
Sent: Friday, April 4, 2025 05:56
To: [email protected]
Subject: Re: [repeater-builder] UHF Repeater Input Frequency Issues ? On Thu, Apr 3, 2025 at 06:49 PM, Matt wrote: A preselector is simply a band pass filter. A splitter is….. a splitter. ? Matt AL0R ? From: [email protected] <[email protected]> On Behalf Of Jason Weisberger via groups.io
Sent: Thursday, April 3, 2025 18:21
To: [email protected]
Subject: Re: [repeater-builder] UHF Repeater Input Frequency Issues ? On Thu, Apr 3, 2025 at 01:04 PM, Charles Adams wrote: Just curious, why do you have an eight way splitter in line to the receiver. The preamp is there to offset the loss in the splitter. Try eliminating both, but not the preselector. Industrial Communications Co.
On Thu, Apr 3, 2025 at 12:17 PM, Mike wrote: I'm curious what the 8-way divider was feeding in addition to the DR-2X??
? That 8-way split was integrated into the Sinclair Preamp.? See attached pic.
? Can you please elaborate on preselector vs splitter?? I assume you're calling a splitter what I've been calling a preamp sure to the split output.? Is a preselector then a receive amp without the integrated split?
? Thanks.? I come from the CATV world prior to ham radio.? The splitter terminology is very familiar, but every little corner of the RF world uses just slightly different language at times.? Was just checking.? ? I wouldn't have guessed that a preselector was a bandpass instead of an active device.? ? Thanks for all the great info folks.? We're on the right track now.
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Re: F/S TPL PA6-1AE UHF amp
That loss is dissipated as heat.
You may have issues if the connectors are soldered on.
Glenn
WB4UIV
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On 4/3/2025 7:10 PM, Mike via groups.io wrote: Or 18ft of RG-142 has about 1.5dB loss.
--
-----------------------------------------------------------------------
Glenn Little ARRL Technical Specialist QCWA LM 28417
Amateur Callsign: WB4UIV wb4uiv@... AMSAT LM 2178
QTH: Goose Creek, SC USA (EM92xx) USSVI, FRA, NRA-LM ARRL TAPR
"It is not the class of license that the Amateur holds but the class
of the Amateur that holds the license"
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Re: UHF Repeater Input Frequency Issues
On Thu, Apr 3, 2025 at 06:49 PM, Matt wrote:
A preselector is simply a band pass filter. A splitter is….. a splitter.
?
Matt
AL0R
?
From: [email protected] <[email protected]> On Behalf Of Jason Weisberger via groups.io
Sent: Thursday, April 3, 2025 18:21
To: [email protected]
Subject: Re: [repeater-builder] UHF Repeater Input Frequency Issues
?
On Thu, Apr 3, 2025 at 01:04 PM, Charles Adams wrote:
Just curious, why do you have an eight way splitter in line to the receiver. The preamp is there to offset the loss in the splitter. Try eliminating both, but not the preselector.
Industrial Communications Co.
On Thu, Apr 3, 2025 at 12:17 PM, Mike wrote:
I'm curious what the 8-way divider was feeding in addition to the DR-2X??
?
That 8-way split was integrated into the Sinclair Preamp.? See attached pic.
?
Can you please elaborate on preselector vs splitter?? I assume you're calling a splitter what I've been calling a preamp sure to the split output.? Is a preselector then a receive amp without the integrated split?
Thanks.? I come from the CATV world prior to ham radio.? The splitter terminology is very familiar, but every little corner of the RF world uses just slightly different language at times.? Was just checking.?
?
I wouldn't have guessed that a preselector was a bandpass instead of an active device.?
?
Thanks for all the great info folks.? We're on the right track now.
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Re: Capacitors in DB4332B and DB4333B
Mike:
Thank you for your emails. I agree it would be great if the
capacitors at 850 Mhz were adjusted to something less than half of
their range, I could just install the same size coils as in the
450 Mhz LPF and retune the capacitors.
Looking at an old 1994 DB Catalog, the curves for the VHF, UHF,
and 800 Mhz LPF's are identical. The 800 Mhz LPFs' are not in the
1993 Db Catalog.
I did considered padding the capacitors if their values were
different. I assumed Q of the circuit would change with the size
of the capacitor and that would affect the response of the low
pass circuit.?
I can not see any component identification on the capacitors in
either LPF that shows their manufacturer or value. Just looking,
they kind of look like Johanson. I have pictures inside both of
the LPFs.
I have a capacitance meter with tweezer type probes. It was
difficult to get a consistent readings. Besides, since I am not
unsoldering the coils, I am actually measuring some overall
capacitance value for all four of the capacitors connected in
parallel which I expect would not be affected by the inductances
of the coils because the measurement frequency is pretty low. I
can't say it is that accurate since it is not a very expensive
capacitance meter.? It did read something.
I was just hoping that someone might have replaced a capacitor
after a lightning strike or something similar, and knew the value.
I may just start by reproducing the UHF coils and install them in
the 850 Mhz LPF, then use the spectrum analyzer and see how low I
can bring the knee of the filter and pad it if I can't reach 450
Mhz.? The UHF coils look like they are expanded and mashed as part
of the tuning.
Micheal Salem
?
On 4/3/2025 11:41 PM, Mike via
groups.io wrote:
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Show quoted text
Once you know current and needed capacitance you could
probably pad the originals with a fixed value silver mica.?
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Re: Capacitors in DB4332B and DB4333B
Once you know current and needed capacitance you could probably pad the originals with a fixed value silver mica.?
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Re: Capacitors in DB4332B and DB4333B
For a similar performing filter the inductance and capacitance would be about double if you cut the frequency in half. Question is, will the original capacitors adjust to about double the capacitance used at 850MHz??
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Re: Where did db Products go?
DB Products was bought out by Comscope along time ago.
Les Keegan N4LPK?
On Thursday, April 3, 2025 at 07:02:40 PM EDT, Karl Shoemaker via groups.io <srg734@...> wrote:
In my research I found conflicting information this past year or more.??? Did db Products get bought by db spectra or Comscope?
--
-
Regards, Karl Shoemaker
To contact me, please visit SRG's web site at?
for the current email address.
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Re: UHF Repeater Input Frequency Issues
A preselector is simply a band pass filter. A splitter is….. a splitter. ? Matt AL0R ?
toggle quoted message
Show quoted text
From: [email protected] <[email protected]> On Behalf Of Jason Weisberger via groups.io
Sent: Thursday, April 3, 2025 18:21
To: [email protected]
Subject: Re: [repeater-builder] UHF Repeater Input Frequency Issues ? On Thu, Apr 3, 2025 at 01:04 PM, Charles Adams wrote: Just curious, why do you have an eight way splitter in line to the receiver. The preamp is there to offset the loss in the splitter. Try eliminating both, but not the preselector. Industrial Communications Co.
On Thu, Apr 3, 2025 at 12:17 PM, Mike wrote: I'm curious what the 8-way divider was feeding in addition to the DR-2X??
? That 8-way split was integrated into the Sinclair Preamp.? See attached pic.
? Can you please elaborate on preselector vs splitter?? I assume you're calling a splitter what I've been calling a preamp sure to the split output.? Is a preselector then a receive amp without the integrated split?
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Capacitors in DB4332B and DB4333B
I am trying to determine the values of variable
capacitors in DB Products Low Pass Filters to see if I can convert
an 800 Mhz LPF that I bought in a flea market to a 450 Mhz LPF by
just changing the inductors between the capacitors.
Here is the setup. I bought two DB4333B type low pass filters for
850 Mhz for a very reasonable price.? The actual model number
listed on the cases is 020252-004.? The frequency range is 851-869
Mhz.? There are N females on both input and output.?
Coincidentally, there is not a model number in the Spectra catalog
that shows N(F) to N(F).? The specific frequency range is also not
listed in the catalog, but are wider. I assume this is some kind
of OEM model number.? It is labeled Decibel.
The inductors in the 800 Mhz LPF between the four capacitors are
bare, straight, and no turns.?
I would like to move the cutoff frequency to convert these to the
same as a UHF DB4332B to use on an isolator for my amateur UHF
repeater.??
I already have a couple of DB 4332B LPF's for UHF (450 -512 Mhz).
The inductors look like 2 1/2 turns on the input and output and 3
1/2 turns between the two inner capacitors.
I tried to measure the capacitors in both of these LPF's, but
considering the capacitors are in the pf range, it was not that
easy to deal with stray capacitances.
Does anybody know the capacitor values in the the DB4333-2450 and
DB 800 Mhz LPF's?
If the capacitors between eh 450 and 800 Mhz are the same value or
even close, I should be able to lower the LPF cut-off by
increasing the number of turns in the filter to the same number as
the DB4332-A.
If the capacitors between 450 and 800 Mhz are different, I will
just have to cut and try and see what shows up on the spectrum
analyzer.? I did not want to solder and unsolder inductors to the
expensive piston type trimmers and damage them with heat.
The wire looks like #12 to me and is covered with shellac in the
UHF and plain old copper wire for the 800 Mhz device?? I have
measured the diameter of the coils in the 450 Mhz LPF and have it
written down, someplace??
I am just trying to avoid buying additional DB4332B LPF's or
equivalent replacement capacitors. That would turn my "reasonable
price" into a "not so reasonable price."?
Thanks.
Micheal Salem N5MS
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Re: F/S TPL PA6-1AE UHF amp
Sounds like a plan. I have a few other repeaters around that are GMRS or back ups. But if you want to continue this thread, you can email me on my QRZ email, WI9HF. Don't want to tie up the list. Chad Nelson WI9HF/WRPL979 Janesville Wisconsin 608-754-8671 Send from my spectrum iPhone 16.
toggle quoted message
Show quoted text
On Apr 3, 2025, at 7:15?PM, Kory Oldham W4RZ <Kory@...> wrote:
?
I fully agree, you would basically just be changing out labels with the name on it.
I am just keeping an eye out for a good deal for a spare for our system. I do not want to buy another brand new one just have it sit on the shelf LOL.
Kory
On 2025-04-03 20:05, Chad Nelson wrote:
Yeah, I figured the TPLM would work good for my purposes here so I'm gonna hang onto that, but there really isn't any need to sell one to buy another one that's almost kind of silly.
Chad Nelson WI9HF/WRPL979
Janesville Wisconsin
608-754-8671
Send from my spectrum iPhone 16.
On Apr 3, 2025, at 6:54?PM, Kory Oldham W4RZ <Kory@...> wrote:
Not sure what you budget is, I think you said UHF, have you looked at Bridgecom website? They have new Henry Radio Manufacture Amps. I'll link the UHF for easy lookup. Kory W4RZ On 2025-04-03 19:49, Chad Nelson wrote:
Hi, I will hang onto that TPL amp at this point. I was trying to find
another amp, but I am trading apples for apples at this point.
Will take advice and keep the TPL. Thanks for your interest.
-----Original Message-----
From: [email protected] <[email protected]> On Behalf Of
Kory Oldham W4RZ
Sent: Thursday, April 3, 2025 5:35 PM
To: [email protected]
Subject: Re: [repeater-builder] F/S TPL PA6-1AE UHF amp
Chad,
Do you have any pictures of the amp? You can email me directly if you
prefer.
Kory
W4RZ (good on QRZ)
On 2025-04-03 15:05, Chad Nelson wrote:
Hi all, I'm going to go in a different route with my amplifier so I
have this one for sale for 550 shipped.
|
Re: F/S TPL PA6-1AE UHF amp
I fully agree, you would basically just be changing out labels with the name on it.
I am just keeping an eye out for a good deal for a spare for our system. I do not want to buy another brand new one just have it sit on the shelf LOL.
Kory
toggle quoted message
Show quoted text
On 2025-04-03 20:05, Chad Nelson wrote:
Yeah, I figured the TPLM would work good for my purposes here so I'm gonna hang onto that, but there really isn't any need to sell one to buy another one that's almost kind of silly.
Chad Nelson WI9HF/WRPL979
Janesville Wisconsin
608-754-8671
Send from my spectrum iPhone 16.
On Apr 3, 2025, at 6:54?PM, Kory Oldham W4RZ <Kory@...> wrote:
Not sure what you budget is, I think you said UHF, have you looked at Bridgecom website? They have new Henry Radio Manufacture Amps. I'll link the UHF for easy lookup. Kory W4RZ On 2025-04-03 19:49, Chad Nelson wrote:
Hi, I will hang onto that TPL amp at this point. I was trying to find
another amp, but I am trading apples for apples at this point.
Will take advice and keep the TPL. Thanks for your interest.
-----Original Message-----
From: [email protected] <[email protected]> On Behalf Of
Kory Oldham W4RZ
Sent: Thursday, April 3, 2025 5:35 PM
To: [email protected]
Subject: Re: [repeater-builder] F/S TPL PA6-1AE UHF amp
Chad,
Do you have any pictures of the amp? You can email me directly if you
prefer.
Kory
W4RZ (good on QRZ)
On 2025-04-03 15:05, Chad Nelson wrote:
Hi all, I'm going to go in a different route with my amplifier so I
have this one for sale for 550 shipped.
|
Re: F/S TPL PA6-1AE UHF amp
Yeah, I figured the TPLM would work good for my purposes here so I'm gonna hang onto that, but there really isn't any need to sell one to buy another one that's almost kind of silly. Chad Nelson WI9HF/WRPL979 Janesville Wisconsin 608-754-8671 Send from my spectrum iPhone 16.
toggle quoted message
Show quoted text
On Apr 3, 2025, at 6:54?PM, Kory Oldham W4RZ <Kory@...> wrote:
?
Not sure what you budget is, I think you said UHF, have you looked at Bridgecom website? They have new Henry Radio Manufacture Amps. I'll link the UHF for easy lookup. Kory W4RZ On 2025-04-03 19:49, Chad Nelson wrote:
Hi, I will hang onto that TPL amp at this point. I was trying to find
another amp, but I am trading apples for apples at this point.
Will take advice and keep the TPL. Thanks for your interest.
-----Original Message-----
From: [email protected] <[email protected]> On Behalf Of
Kory Oldham W4RZ
Sent: Thursday, April 3, 2025 5:35 PM
To: [email protected]
Subject: Re: [repeater-builder] F/S TPL PA6-1AE UHF amp
Chad,
Do you have any pictures of the amp? You can email me directly if you
prefer.
Kory
W4RZ (good on QRZ)
On 2025-04-03 15:05, Chad Nelson wrote:
Hi all, I'm going to go in a different route with my amplifier so I
have this one for sale for 550 shipped.
|
Re: F/S TPL PA6-1AE UHF amp
Not sure what you budget is, I think you said UHF, have you looked at Bridgecom website? They have new Henry Radio Manufacture Amps. I'll link the UHF for easy lookup.
Kory
W4RZ
On 2025-04-03 19:49, Chad Nelson wrote:
toggle quoted message
Show quoted text
Hi, I will hang onto that TPL amp at this point. I was trying to find
another amp, but I am trading apples for apples at this point.
Will take advice and keep the TPL. Thanks for your interest.
-----Original Message-----
From: [email protected] <[email protected]> On Behalf Of
Kory Oldham W4RZ
Sent: Thursday, April 3, 2025 5:35 PM
To: [email protected]
Subject: Re: [repeater-builder] F/S TPL PA6-1AE UHF amp
Chad,
Do you have any pictures of the amp? You can email me directly if you
prefer.
Kory
W4RZ (good on QRZ)
On 2025-04-03 15:05, Chad Nelson wrote:
Hi all, I'm going to go in a different route with my amplifier so I
have this one for sale for 550 shipped.
|
Ken Arck AH6LE
