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.
?
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.
?
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.
?
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
?
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.?
?
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
?
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.?
?
prices sure have changed!!
?
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Re: DB-224-E antenna sources?
The Commander Technologies 220-N was mentioned.? Even though it shows a wide bandwidth, if you go that route be sure you order it for your specific transmit operating frequency.
?
Burt, K6OQK
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Re: Vertex VXR-7000 power cycling after transmit
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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Vertex VXR-7000 power cycling after transmit
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: Accessory connector on back of TK8302
I realize we needed the program the pins, we just needed to pin out diagram, which was found. Thanks. Chad Nelson WI9HF/WRPL979 Janesville Wisconsin 608-754-8671 Send from my spectrum iPhone 16.
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On May 19, 2025, at 7:13?AM, Chris Boone WB5ITT via groups.io <setxtelecom@...> wrote:
? No you need to open up the KPG software and set them yourself. They're programmable, they aren't fixed so you need to program the pins... did Ken save a copy of your code plug?
Chris WB5ITT? On Sun, May 18, 2025, 5:10?PM Chad Nelson via <chad.nelson71= [email protected]> wrote: They were supposedly programmed for the RC 210 but they don't work with that controller on board two. We just need the pin out for that port on the TK 8302 so we can program them correctly. Chad Nelson WI9HF/WRPL979 Janesville Wisconsin 608-754-8671 Send from my spectrum iPhone 16. ?
Are you saying that the pins were
programmed for a different controller, not for the 210?
Chuck
On 5/18/2025 6:05 PM, Chad Nelson via
wrote:
Ken from Arcom programmed those pins but they don't work for the I
C2 10 repeater controller. My buddy needs to see pin out for that
port.
Chad Nelson WI9HF/WRPL979
Janesville Wisconsin
608-754-8671
Send from my spectrum iPhone 16.
On May 18, 2025, at 4:40?PM, Chuck
Kelsey via <wb2edv@...> wrote:
?
My first thought is whether the
accessory jack pins are programmed properly. I've not
programmed this particular model, but other Kenwood radios
need this done.
Chuck
WB2EDV
On 5/18/2025 5:30 PM, pschaffn
via wrote:
Hi Chad
?
? What? does not work?? ? I run them they work great.
?
Pat? ?kc8cse
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Re: Wanted MTR2000 UHF 100w PA
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On Thu, May 15, 2025 at 2:21?AM George Csahanin via <george= [email protected]> wrote: I've sucessfully repaired MTR2000 with bad PA transistors. Might be cheaper than buying a new PA. Got the devices from Chiner for (about 3 years ago) $16/ea.
?
GeorgeC W2DB
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Re: Accessory connector on back of TK8302
No you need to open up the KPG software and set them yourself. They're programmable, they aren't fixed so you need to program the pins... did Ken save a copy of your code plug?
Chris WB5ITT?
On Sun, May 18, 2025, 5:10?PM Chad Nelson via <chad.nelson71= [email protected]> wrote: They were supposedly programmed for the RC 210 but they don't work with that controller on board two. We just need the pin out for that port on the TK 8302 so we can program them correctly. Chad Nelson WI9HF/WRPL979 Janesville Wisconsin 608-754-8671 Send from my spectrum iPhone 16. ?
Are you saying that the pins were
programmed for a different controller, not for the 210?
Chuck
On 5/18/2025 6:05 PM, Chad Nelson via
wrote:
Ken from Arcom programmed those pins but they don't work for the I
C2 10 repeater controller. My buddy needs to see pin out for that
port.
Chad Nelson WI9HF/WRPL979
Janesville Wisconsin
608-754-8671
Send from my spectrum iPhone 16.
On May 18, 2025, at 4:40?PM, Chuck
Kelsey via <wb2edv@...> wrote:
?
My first thought is whether the
accessory jack pins are programmed properly. I've not
programmed this particular model, but other Kenwood radios
need this done.
Chuck
WB2EDV
On 5/18/2025 5:30 PM, pschaffn
via wrote:
Hi Chad
?
? What? does not work?? ? I run them they work great.
?
Pat? ?kc8cse
|
OK. Back when it was posted originally,
there was discussion, and a comment, that construction details
would be garnered and shared. I've been patiently waiting ever
since.
Chuck
WB2EDV
On 5/18/2025 11:38 PM, Jonny Tomlinson
KF6PHX via groups.io wrote:
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It's still there in part. I actually changed out some antennas
to the left last year.
Jonny. Kf6phx
Sent from my Verizon, Samsung Galaxy smartphone
Get
Wow
On Sun, May 18, 2025 at 2:38 PM, Chuck Kelsey via
groups.io
Whatever happened to the
follow-up on this UHF antenna array that was posted
several years back?
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I'm going to pick up a two 400W 900 meg PAs off of a friend of mine. They were 900 commercial/public service amplifiers. I am not sure what brand they are. I looked at them once and I can't remember the manufacturer. I know it was a tall rack mount (probably 2-3ft tall) and had two thumbscrews on the front with a door that hinged open. Inside was all of the modules interconnected together. There was a meter on the front with a rotary knob that showed forward, reflected, current, and voltage. I guess I'll see this week when I meet with him to grab some other stuff too.?
?
Joe
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I like Bobs answer, the main thing is drive them as deep as possible, even horizontal if that¡¯s all you can do. I would use stranded copper wire like a #2 and then if possible Cad weld them to the rods creating a loop or large distribution to dissipate a lighting strike. Tie the ground panel to the system and then found everything in the shack to the same ground potential.
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On May 15, 2025, at 12:39?PM, Wayne Childers via groups.io <jrbluz2@...> wrote:
? Soldering them together is fruitless. Always use Caldwell On May 15, 2025, at 3:16?PM, N4FOX via groups.io <N4fox.r@...> wrote:
? Been trying all day to get a 8ft grounding rod all the way down. I have 6ft in the ground. It doesn't seem to want to go deeper.?
?
I feel I've hit rock. The ground here is very rocky & mixed with red (iron rich) clay. The tower is next to the house. Its embedded in a 5ft deep concrete base. There was about 10/12ft of topsoil/earth moved to level the spot for the house. So the lack of original top soil means I'm hitting lots of rock fairly soon.?
?
This area used to be mined for iron ore. So that's why I know the ground is rich with iron deposits in that red clay. Heck my drinking water is spring fed & it's rich with iron too.?
?
So here's what I was wondering given the circumstances & type of soil for the area. Can I just get another grounding rod & drive on the other side of the tower. It will hopefully go 6ft in as well. Deeper would be nice. Then tie the two rods together with sold conductor ground wire at the copper bus bar I'm mounting on the tower. Would that be good??
?
I'm using a "maximum effort" ?? fence post driver & sledge hammer.?
?
Also I'm noticing the hole gets bigger than the grounding rod from all the labor of driving it in. I've got some pure copper powder. Would it be wise to pour some down that hole to help fill gaps & ensure good connection?
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Re: Kenwood TK790 problems
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.
toggle quoted message
Show quoted text
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.
?
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.
?
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.
?
Howard
|
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.
?
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.
?
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.
?
Howard
|
On Sun, May 18, 2025 at 11:38 PM, Jonny Tomlinson KF6PHX wrote:
It's still there in part. I actually changed out some antennas to the left last year.
?
Jonny. Kf6phx
Sent from my Verizon, Samsung Galaxy smartphone
Get
Wow
On Sun, May 18, 2025 at 2:38 PM, Chuck Kelsey via groups.io
<wb2edv@...> wrote:
Whatever happened to the follow-up on this UHF antenna array that was posted several years back?
Some context would be nice for those that have never seen it before. Mike
|
It's still there in part. I actually changed out some antennas to the left last year.
Jonny. Kf6phx
Sent from my Verizon, Samsung Galaxy smartphone
Get
toggle quoted message
Show quoted text
Wow
On Sun, May 18, 2025 at 2:38 PM, Chuck Kelsey via groups.io
<wb2edv@...> wrote:
Whatever happened to the follow-up on this UHF antenna array that was posted several years back?
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PVC conduit through all foundations and some were UFER with the foundation rebar bonded to the ground ring and antenna. All bonds were Cadweld and they were not specifically inspected but we did look some over that got dug up to bond the ground ring with newer dish installs. The welds and wire all looked good with some being 15yrs old. Most dish antennas with 13m being the largest at these facilities had multiple air terminals with 500MCM wire to the ground ring and all movable joints of the antenna were bypassed with large conductors to reduce the chance of welding the bearings during a strike. Many of these dishes were in the $5mil price range and every part of them and the installation was really well done.?
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On Sun, May 18, 2025 at 2:38 PM, Chuck Kelsey via groups.io <wb2edv@...> wrote:
Whatever happened to the follow-up on
this UHF antenna array that was posted several years back?
|
You don't need to inspect "wire to rod." They are either welded or high compression crimped.
Concrete that yields to strikes has other issues. Consider that in nearly every case, a tower has a pin or other structural components that conduct embedded power.
Matt
AL0R
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-----Original Message----- From: [email protected] < [email protected]> On Behalf Of Glenn Little via groups.io Sent: Sunday, May 18, 2025 20:18 To: [email protected]Subject: Re: [repeater-builder] Grounding rods How did you periodically inspect the wire to rod bond? What was the distance between rods? Did the ground wire to the dish go through plastic pipe or was in in contact with the concrete? I have seen a foundation explode when the ground wire was in contact with the concrete. Glenn On 5/18/2025 8:05 PM, Mike via groups.io wrote: The satellite uplink facilities I worked at had 10ft ground rods
buried 4ft below grade and there were 75 around the building and
probably 200 total on site with separate ground rings around all
antenna foundations bonded to the main building ground. We used 500MCM
bare stranded copper wire for the ground rings and up through
satellite dish foundations and to tower legs. No wimpy 2ga wire used here....
-- ----------------------------------------------------------------------- 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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KB9LFZ
Burt K6OQK
Pierre Martel
Chris Boone WB5ITT
John N. Hudson III