Re: Packet Node at an FM Broadcast site
Just do a search for trap on this forum. ? Matt AL0R ?
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From: [email protected] <[email protected]> On Behalf Of John N3XKD via groups.io
Sent: Thursday, May 8, 2025 14:06
To: [email protected]
Subject: Re: [repeater-builder] Packet Node at an FM Broadcast site ? I have some bandpass cavities that will be tuned to the packet frequency, this FM Broadcast site is a 100kW site. What's involved with the tuned stub ? Can you direct me at some reading ? Much appreciated ? On Thu, May 8, 2025 at 6:07?PM STANLEY STANUKINOS via <Ka5iid=[email protected]> wrote: Mod the radio so you can put one on the TX section. Depending on where antenna is you may get RX overload and may need to put a tuned stub on the RX side to notch out the FM station.? Stan ? Hey Folks, Long time listener first time poster. I have a situation where I would like to install a Packet station at a repeater site that is also an FM broadcast site. The repeater has an RF circulator with dummy load installed to keep FM Broadcast out of the TX side of the repeater. Is there anything that I can do to protect the packet radio ? Thanks for any and all suggestions and direction.
--
The line separating good and evil passes not through states, nor between classes, nor between political parties either¡ªbut right through every human heart¡ªand through all human hearts. This line shifts. Inside us, it oscillates with the years. And even within hearts overwhelmed by evil, one small bridgehead of good is retained. And even in the best of all hearts, there remains ¡ an unuprooted small corner of evil. - Aleksandr Solzhenitsyn
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Tessco has it for 1.54 for such a low quantity. ? Matt AL0R ?
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From: [email protected] <[email protected]> On Behalf Of Dan Newby via groups.io
Sent: Thursday, May 8, 2025 14:11
To: [email protected]
Subject: Re: [repeater-builder] Heliax ? Davis RF has the best price I have seen on LDF4-50A at $1.87 per foot. You might even get a lower price buying 300ft at one time. ? On Thu, May 8, 2025 at 2:58?PM Dr David K5RAV via <drwoolweaver=[email protected]> wrote: I need 300 feet of LDF4-50 1/2 inch heliax for a project.? If I can get the heliax to the contractor soon, he will install it at a discount as he is already installing heliax for the tower owner.? Thanks de David, K5RAV drwoolweaver@...
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I pay 1.34 per foot at Tessco. ?
Ken Pearce? N4KCD? Commerce Township, MI ? Davis RF has the best price I have seen on LDF4-50A at $1.87 per foot. You might even get a lower price buying 300ft at one time.
Hope this helps,
Dan WD4LUR On Thu, May 8, 2025 at 2:58?PM Dr David K5RAV via <drwoolweaver= [email protected]> wrote: I need 300 feet of LDF4-50 1/2 inch heliax for a project.? If I can get the heliax to the contractor soon, he will install it at a discount as he is already installing heliax for the tower owner.? Thanks de David, K5RAV drwoolweaver@...
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Do you have a special account with them? I looked at their site just now and it shows $2.14 per foot.
Thanks,
Dan
I pay 1.34 per foot at Tessco. ?
Ken Pearce? N4KCD? Commerce Township, MI ? Davis RF has the best price I have seen on LDF4-50A at $1.87 per foot. You might even get a lower price buying 300ft at one time.
Hope this helps,
Dan WD4LUR On Thu, May 8, 2025 at 2:58?PM Dr David K5RAV via <drwoolweaver= [email protected]> wrote: I need 300 feet of LDF4-50 1/2 inch heliax for a project.? If I can get the heliax to the contractor soon, he will install it at a discount as he is already installing heliax for the tower owner.? Thanks de David, K5RAV drwoolweaver@...
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I pay 1.34 per foot at Tessco. ?
Ken Pearce? N4KCD? Commerce Township, MI
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On May 8, 2025, at 15:12, Dan Newby via groups.io <wd4lur@...> wrote:
? Davis RF has the best price I have seen on LDF4-50A at $1.87 per foot. You might even get a lower price buying 300ft at one time.
Hope this helps,
Dan WD4LUR On Thu, May 8, 2025 at 2:58?PM Dr David K5RAV via <drwoolweaver= [email protected]> wrote: I need 300 feet of LDF4-50 1/2 inch heliax for a project.? If I can get the heliax to the contractor soon, he will install it at a discount as he is already installing heliax for the tower owner.? Thanks de David, K5RAV drwoolweaver@...
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Re: Packet Node at an FM Broadcast site
If you look in the archives of this site there have been discussions on how to build them in the past. I believe the repeater builder site may have documentation as well.?
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On May 8, 2025, at 2:06?PM, John N3XKD via groups.io <john.kreno@...> wrote:
? I have some bandpass cavities that will be tuned to the packet frequency, this FM Broadcast site is a 100kW site. What's involved with the tuned stub ? Can you direct me at some reading ? Much appreciated
On Thu, May 8, 2025 at 6:07?PM STANLEY STANUKINOS via <Ka5iid= [email protected]> wrote: Mod the radio so you can put one on the TX section. Depending on where antenna is you may get RX overload and may need to put a tuned stub on the RX side to notch out the FM station.?
Stan ? Hey Folks, Long time listener first time poster. I have a situation where I would like to install a Packet station at a repeater site that is also an FM broadcast site. The repeater has an RF circulator with dummy load installed to keep FM Broadcast out of the TX side of the repeater. Is there anything that I can do to protect the packet radio ? Thanks for any and all suggestions and direction.
-- John Kreno
The line separating good and evil passes not through states, nor between classes, nor between political parties either¡ªbut right through every human heart¡ªand through all human hearts. This line shifts. Inside us, it oscillates with the years. And even within hearts overwhelmed by evil, one small bridgehead of good is retained. And even in the best of all hearts, there remains ¡ an unuprooted small corner of evil. - Aleksandr Solzhenitsyn
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Davis RF has the best price I have seen on LDF4-50A at $1.87 per foot. You might even get a lower price buying 300ft at one time.
Hope this helps,
Dan WD4LUR
On Thu, May 8, 2025 at 2:58?PM Dr David K5RAV via <drwoolweaver= [email protected]> wrote: I need 300 feet of LDF4-50 1/2 inch heliax for a project.? If I can get the heliax to the contractor soon, he will install it at a discount as he is already installing heliax for the tower owner.? Thanks de David, K5RAV drwoolweaver@...
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Re: Packet Node at an FM Broadcast site
I have some bandpass cavities that will be tuned to the packet frequency, this FM Broadcast site is a 100kW site. What's involved with the tuned stub ? Can you direct me at some reading ? Much appreciated
On Thu, May 8, 2025 at 6:07?PM STANLEY STANUKINOS via <Ka5iid= [email protected]> wrote: Mod the radio so you can put one on the TX section. Depending on where antenna is you may get RX overload and may need to put a tuned stub on the RX side to notch out the FM station.?
Stan ? Hey Folks, Long time listener first time poster. I have a situation where I would like to install a Packet station at a repeater site that is also an FM broadcast site. The repeater has an RF circulator with dummy load installed to keep FM Broadcast out of the TX side of the repeater. Is there anything that I can do to protect the packet radio ? Thanks for any and all suggestions and direction.
-- John Kreno
The line separating good and evil passes not through states, nor between classes, nor between political parties either¡ªbut right through every human heart¡ªand through all human hearts. This line shifts. Inside us, it oscillates with the years. And even within hearts overwhelmed by evil, one small bridgehead of good is retained. And even in the best of all hearts, there remains ¡ an unuprooted small corner of evil. - Aleksandr Solzhenitsyn
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I need 300 feet of LDF4-50 1/2 inch heliax for a project.? If I can get the heliax to the contractor soon, he will install it at a discount as he is already installing heliax for the tower owner.? Thanks de David, K5RAV drwoolweaver@...
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Re: Packet Node at an FM Broadcast site
Mod the radio so you can put one on the TX section. Depending on where antenna is you may get RX overload and may need to put a tuned stub on the RX side to notch out the FM station.?
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On May 8, 2025, at 12:43?PM, John N3XKD via groups.io <john.kreno@...> wrote:
? Hey Folks, Long time listener first time poster. I have a situation where I would like to install a Packet station at a repeater site that is also an FM broadcast site. The repeater has an RF circulator with dummy load installed to keep FM Broadcast out of the TX side of the repeater. Is there anything that I can do to protect the packet radio ? Thanks for any and all suggestions and direction.
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Re: Packet Node at an FM Broadcast site
Just use a bandpass cavity tuned to the packet channel
Chris WB5ITT
Hey Folks, Long time listener first time poster. I have a situation where I would like to install a Packet station at a repeater site that is also an FM broadcast site. The repeater has an RF circulator with dummy load installed to keep FM Broadcast out of the TX side of the repeater. Is there anything that I can do to protect the packet radio ? Thanks for any and all suggestions and direction.
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Packet Node at an FM Broadcast site
Hey Folks, Long time listener first time poster. I have a situation where I would like to install a Packet station at a repeater site that is also an FM broadcast site. The repeater has an RF circulator with dummy load installed to keep FM Broadcast out of the TX side of the repeater. Is there anything that I can do to protect the packet radio ? Thanks for any and all suggestions and direction.
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Re: Looking for advice on antenna placement for our radio club repeaters.
Rk is not UV resistant. It is designed for plenum (indoor) installations. The jacket will degrade rapidly when used outdoors. ? FSJ is indeed ¡°Superflex¡± and the jacket is UV resistant, though thinner than plain Heliax. ? Matt AL0R ?
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From: [email protected] <[email protected]> On Behalf Of Dale KB9JJA via groups.io
Sent: Thursday, May 8, 2025 10:29
To: [email protected]
Subject: Re: [repeater-builder] Looking for advice on antenna placement for our radio club repeaters. ? The 7/8 is AVA5RK-50 and I just looked that Andrew calls his Heliax and not Superflex. The 1/2 inch is FSJ4-50B also not called Superflex.? My bad on calling it Superflex.? We already have it and the connectors as it was donated to the club.?
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Re: Looking for advice on antenna placement for our radio club repeaters.
The 7/8 is AVA5RK-50 and I just looked that Andrew calls his Heliax and not Superflex.
The 1/2 inch is FSJ4-50B also not called Superflex.?
My bad on calling it Superflex.?
We already have it and the connectors as it was donated to the club.?
?
?
?
?
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Re: mobile antenna on the side windows???
On 2025-05-07 6:50 p.m., Gervais Fillion via groups.io wrote: may i contact you if you would dispose of yours? Sure, I have no use for them. How about CAN$25 plus shipping if you can't get yours to work? These are NOS, with the original 3M tape on both mating surfaces. Tedd, VE3TJD -- This email has been checked for viruses by AVG antivirus software. www.avg.com
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That's the service manual addendum, and it does not have complete information about the radio (I already have a copy of it, and it seems to be focused on alignment rather than full details and troubleshooting).? I'm working on this radio for Phillip, and cannot find the information I need in the addendum.
?
I'm assuming there is a more complete service manual available, but so far have not been able to find a copy.
?
ron
KA3JIJ
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Re: FS: thin client computers for DOS radio programming
This is Ray Brown, KB0STN.. if any are still available, I¡¯ll take one. I¡¯m good in QRZ. (I used to run a 6m repeater here in EM27.)?
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Re: Looking for advice on antenna placement for our radio club repeaters.
I have soo much of it, it doesn't matter to me
?Chris WB5ITT?
The problem is UV stability. I read in their documentation somewhere
that the outer jacket isn't really UV stable. So look back at it again
in 8-10 years.
On 5/7/2025 4:41 PM, Chris Boone WB5ITT via wrote:
> That may be so Milton but I've had half inch superflex running to my HF
> and VHF antennas for over 4 years without any issues.. if it can stand
> the Texas heat it can stand anything LOL
>
> Chris WB5ITT
>
> On Wed, May 7, 2025, 3:11?PM Milton Engle via <http://
> > <n3ltq=[email protected] <mailto:[email protected]>> wrote:
>
>? ? ?Superflex is not intended to be used for exterior antenna runs.? It
>? ? ?was developed for interior cabling in shelters and racks where
>? ? ?tighter bends were needed. Use regular Heliax for exterior runs.
>
>? ? ?Milt
>? ? ?N3LTQ
>
>>? ? ?On May 7, 2025, at 12:12, wj9jrg via <>
>>? ? ?<wj9jrg=[email protected] <mailto:[email protected]>> wrote:
>>
>>? ? ??
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Re: mobile antenna on the side windows???
Hello Gervais,
You have the right idea. I just connected my Bird and a radio. Moved the inside mount to see what would happen. Getting the inside mount just off center is where it liked it the best. It has worked very well there. Once I found the spot, I mounted it there.
Mick - W7CAT
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----- Original Message ----- From: "Gervais Fillion via groups.io" To: " [email protected]" Sent: Wednesday, May 07, 2025 06:46:39 PM Subject: Re: [repeater-builder] mobile antenna on the side windows??? hi mick,
well i was doing some cleaning here and i found one Larsen glass mount that my older brother ,also an amateur,gave me years,,,ago.i dont know the model but it has a long spring whip,,maybe 24-28 inch i dont know.i will install it and fixed the inside part with just the masking tape and check the swr at 5 watts just to see the level. i have a Bird swr meter so the lecture is right.
yes your Larsen is 250 or 280$ here at Radioworld in Ontario it is crazy.i dont have the budget for that price.
i check the antenna this week,tomorrow is my visit at my doctor !
when you become an oldman some parts falls ,,on the way to the end of
life.
73 mick
great to have the message
gervais ve2ckn
________________________________
De : [email protected] de la part de Teton Amateur Radio
Repeater Association (TARRA) Envoy¨¦ : 7 mai 2025 19:25
? : [email protected]
Objet : Re: [repeater-builder] mobile antenna on the side windows???
Hello Gervais,
The Larsen kg-270 is a very good glass mount but they have gone
completely crazy on the price.
When I was installing mine, I used some packing take to hold it in place
and look at the SWR. If I had both squares lined up, the SWR was really
bad. Moving the inside of the vehicle part to a quarter of an inch
offset, the SWR was perfect. Has been working very well for a few years.
Mick - W7CAT
----- Original Message -----
From: "Gervais Fillion via groups.io"
To: "[email protected]"
Sent: Wednesday, May 07, 2025 09:35:49 AM
Subject: Re: [repeater-builder] mobile antenna on the side windows???
interesting,i will check !
i also search for your experiences on certain model,sometime buying the most costly will not mean best performance but great marketing!!
thanks
gervais ve2ckn
________________________________
De : [email protected] de la part de Part 15 Engineer via
groups.io
Envoy¨¦ : 7 mai 2025 11:29
? : [email protected]
Objet : Re: [repeater-builder] mobile antenna on the side windows???
Search Google for "glass mount dual band antenna" prices range from poor quality $30 to top quality $153.
On Wed, May 7, 2025, 9:24?AM Gervais Fillion via groups.io> wrote:
hello everyone,
i just baught a new vehicule and i dont want to make an hole on the
top,,but decades ago i used one of those side mount antenna that were
fixed in place with a very sticky tape from 3M if i remember.
i need one now but i dont want to pay to much but something good,my
repeater are well located around.i will use max 20-25 watts.
would you have a couple of suggestions,i am sure many have used some
model.
thanks in advance for your guidance.
73
gervais,ve2ckn
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Re: mobile antenna on the side windows???
Hi Gervais,
I once had a van conversion that had a totally fiberglass roof.?? On that roof, I made an X with 2" wide copper tape.?? I then drilled my hole for the nmo mount, also soldered the mount to the copper.?? Now I had a ground plane.? Worked well.
Andy
On Wed, May 7, 2025 at 6:57?PM Gervais Fillion via <ve2ckn2= [email protected]> wrote:
well,
i dont have much choice on my Rav4 2009,
on the rear i have a fiberglass spoiler,,i dont want an hole.
i am stock with the glass mount on the side ,a compromise situation.
gervais
Consider a trunk lip mount.? I have used these on hoods and trunks as well as some other locations. ?
Milt
N3LTQ
On May 7, 2025, at 14:04, n9wys <n9wys@...> wrote:
?Roger and Gervais,
I used a Larsen glass mount on my wife's 2001 Cadillac STS, until we had to replace the rear glass... Like Roger noted, the new glass must have been of a different "mix", as I could never get a good match with the antenna after replacement.? You'll also
have to avoid the defrosted grid if there's one on/in the glass.
YMMV
Mark - N9WYS?
On Wed, May 7, 2025 at 12:35, Gervais Fillion via
yes roger,i think i have a special place on the side windows for that ,,it is molded in the glass or it was on the rear windo,,
i will check
thanks
Gef
Use caution with glass mounts.
Some vehicles have a high metal content in the window tint that seriously degrades performance.
Roger
On 5/7/2025 10:24 AM, Gervais Fillion via wrote:
hello everyone,
i just baught a new vehicule and i dont want to make an hole on the top,,but decades ago i used one of those side mount antenna that were fixed in place with a very sticky tape from 3M if i remember.
i need one now but i dont want to pay to much but something good,my repeater are well located around.i will use max 20-25 watts.
would you have a couple of suggestions,i am sure many have used some model.
thanks in advance for your guidance.
73?
gervais,ve2ckn
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Chris Boone WB5ITT
Ray Brown