Re: Why use a purpose built repeater box as a repeater rather than a transmitter, receiver, and controller tied (lashed) together?
he needs? siver wire to his speakers
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I have an audiophile brother in law who purchased a special power line ¡°balancing transformer¡± because he said if he turns the volume up all the way and puts
his head next to one of his speakers he can hear a very weak hum.
I asked him if he could hear the hum with normal volume and seated at his listening position.
¡°No,¡± he said, ¡°but I know it¡¯s there.¡±
Mike/
K5MGR
?
Mike Langner
929 Alameda Road NW
Albuquerque, NM 87114-1901
(505) 898-3212 home/home office
(505) 238-8810 cell
mlangner@...
?
|
Re: Why use a purpose built repeater box as a repeater rather than a transmitter, receiver, and controller tied (lashed) together?
I have had several 850 and 750 Kenwoods in operation and the only problem I had was PA problems on both,but they were V1 units. Most have been replaced with V2 units now unfortunately due to bad lightning strikes at a couple sites. Both had good grounding but we had close strikes at the pole that attacked some from both the antenna side and the AC line. Overall they're pretty tough units. I have had good luck with M1225's as well but more filtering was needed in high RF environments and especially a change of duplexer cables as the first thing.
Wayne
kg4muc
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On 1/20/2021 4:11 PM, David McGough wrote: Dan,
Do you have much real experience with Kenwood hardware??? The TKR-750v2 and TKR-850v2 are excellent repeaters. I've not experienced any of the "problems" you suggest are common and I've had a small fleet of them installed for better than a decade now. They're as close to bulletproof as any repeater I've ever encountered.? I run pHEMT RX preamps and a variety of window filters, including 2-pole and 4-pole front end crystal filters on the VHF gear, duplexers on some systems, etc. Most of these systems are colocated with high-power broadcast gear.? As far as performance, they kick butt and take names.
AC
Sorry you've had bad experiences.? But, your experiences are not typical, from what I've seen.
73, David KB4FXC
|
Re: Why use a purpose built repeater box as a repeater rather than a transmitter, receiver, and controller tied (lashed) together?
Hum in an amplifier ¨C did the hum go away ?
_____________________________________________________
According to him, it did.
But after he spent that money, I¡¯m sure he would say it had whether or not it did !!
Years ago Bob Carver said to Stereophile Magazine that his $400 amplifiers couldn¡¯t be distinguished from the $6,000 per pair ones the ¡°golden ears¡± said were superior.?
He took one amplifier of each type the ¡°golden ears¡± said were superior for a day while staying at a motel in Santa Fe, NM.
Adjusting his amplifiers to track the exact frequency response of the ¡°golden¡± amplifiers he set them up for a Stereophile ¡°golden ears¡± test.
The ¡°golden ears¡± couldn¡¯t tell which was which, which was very disconcerting.
And so as the story goes he was banned from advertising his amplifiers in Stereophile.
There¡¯s a lot of money to be made selling mystique !!
For the full story, please see .
It¡¯s a great read !!
Back to talking about repeaters --
Mike/
K5MGR
______________________________________ ? Mike Langner
929 Alameda Road NW
Albuquerque, NM 87114-1901
(505) 898-3212 home/home office
(505) 238-8810 cell
mlangner@... ?
|
Re: Why use a purpose built repeater box as a repeater rather than a transmitter, receiver, and controller tied (lashed) together?
Did the hum go away after he installed that transformer?
--
The Real RFI-EMI-GUY
|
Re: Why use a purpose built repeater box as a repeater rather than a transmitter, receiver, and controller tied (lashed) together?
There is sometimes confusion as to what flat audio actually means and how to accommodate it.
In monitoring the linked UHF SARNET system here in FL, some of the repeater nodes are very tinny suggesting that raw discriminator audio was presented as "flat audio" to the network interface or that it or the local controller requires a de-emphasis jumper installed? and it was not placed.
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Show quoted text
On Wed, Jan 20, 2021 at 03:41 PM, Bob wrote:
Hi Dan,
>When you throw a controller in-line, even on the best purpose-built repeater, you will sacrifice audio quality, often just to add voice IDs and announcements.
Without exception? We're talking about audio, not rocket science. Audiophiles spend many thousands trying to recreate the most perfect audio possible. They install a cartridge made by one company into a turntable made by another. It's connected to a pre-amp made by another, which feeds a power amp made by another, which is powered from a line conditioner made by another. Then there's speakers made by another, and of course they're connected via special oxygen-free copper wires made by another. They're fussy beyond belief and pick the best equipment for each job, and it's not all made by the same company.
73,
Bob
Bob Schmid, WA9FBO
S-COM, LLC
P.O. Box 1546
LaPorte, CO 80535
970-416-6505
On 1/19/2021 10:40 PM, Dan Woodie wrote:
Jim,
?
Calling Kenwood repeaters "damn good" is going a bit far.? They are better than average but certainly have their shortcomings.? A Quantar, GTR8000, Codan/Daniel's, or MastrIII would be more in the class of "damn good".? To meet that classification requires certain reliability, a variety of external interfaces, external freq reference ability, and duty cycle requirements in my opinion.? While the Kenwood repeaters are easy to setup and have good audio they have to be derated for high-duty-cycle and the only (rebranded) PSU they offer for them has a tendency to fail and sometimes melt down the output terminals.? Anything over about 20W requires a third-party or Kenwood rebranded amplifier. I can confirm however that they are definitely not mobiles in a box like the Bridgecom, Yaesu, some Icoms, and older low-tier Motorola (non-public-safety) repeaters.??
?
For the folks claiming "no desense" I would bet the majority don't know the procedure for measuring desense and EVERY repeater has some level of desense, even with the best hardware and duplexers.? It is unavoidable as any high-powered transmission will increase the noise floor - so the goal is to reduce the impact of this.? Adding a preamp in many cases actually makes matters worse, not better, and if your receiver is that deaf it isn't going to fix it.? The only place a preamp makes sense is in a TTA or Multicoupler where it is used to compensate for splits and bring things back to unity gain..? Most mobiles simply do not have the level of filtering (TX and RX) to perform as well as a purpose-built repeater.? Also most purpose-built repeaters have far better audio quality when used with internal controllers and have audio levels optimized.? When you throw a controller in-line, even on the best purpose-built repeater, you will sacrifice audio quality, often just to add voice IDs and announcements.? ?A better approach is to connect said controller to a wireline or similar and mix it with the repeated TX audio or use logic table to set priority and/or ID holdoff.? The other benefit is if you use a digital-capable repeater such as a Quantar you don't give up that capability just to add voice IDs.
?
Yes I have built repeaters from mobiles.? Yes I have used many different purpose-built repeaters.? Yes I have seen many Ham Hack Jobs and have seen quite a few thrown out of sites for causing issues.? If you put some engineering and common sense into things you will end up with a nice system- if not you are likely to end up with a mediocre system that is rarely used and is just there to satisfy your ego - which is the only reason for most voice IDs I might add.? Many will not like to hear this but it is the truth.
?
Thanks,
?
Dan Woodie, CETsr
KC8ZUM
On Tue, Jan 19, 2021, 9:52 PM Jim Barbour < wd8chl@...> wrote: > On 1/16/2021 10:53 PM, TGundo 2003 via wrote:
>> To retort:
>>
>> Many, if not most, current "factory" repeaters today are nothing more
>> than 2 mobiles in a box
None of the Kenwood repeaters are "2 mobiles in a box". They are all
built as repeaters. And damn good ones too.
(from a guy who has put together a bunch of Micor rptrs...)
? -- The Real RFI-EMI-GUY
|
Re: Why use a purpose built repeater box as a repeater rather than a transmitter, receiver, and controller tied (lashed) together?
Bob's point (and made well) is it's pretty easy for an engineer to properly make an amplifier to reproduce 20 Hz-5K with less than 1% distortion and less than +/- a couple DB.?? (and if there are controller companies that are struggling with that, maybe they should do something else?)...
Most people make the mistake of assuming it's a controller issue when the audio gets distorted, when it is likely a level setting issue.
Bob, thanks for your great sounding controllers, and also audio delay hardware!
Andy
On Wed, Jan 20, 2021 at 4:34 PM Bob < bob@...> wrote:
Hi Skyler,
>Audiophiles like that annoy me.
Sure, but my point was the audio goes through all those devices
and still comes out good. I don't know why a
receiver/controller/transmitter audio chain is so feared. We're
talking <300 Hz to 5 kHz. We hotshot technical types really
ought to be able to handle it.
73,
Bob
On 1/20/2021 2:15 PM, Skyler Fennell
wrote:
On Wed, Jan 20, 2021 at 1:41
PM Bob < bob@...>
wrote:
Hi Dan,
>When you throw a controller in-line, even on the
best purpose-built repeater, you will sacrifice audio
quality, often just to add voice IDs and announcements.
I disagree, this is mixed in and the original audio is
not touched when the voice announcement is not playing. I
built a basic controller with the dumbest mixer circuit ( 2
resistors) and the original audio is practically untouched.?
If you are using a DSP system like AllStar link to
process and rebroadcast your audio, of course, quality will
be sacrafised.?
?
Without exception? We're talking about audio, not
rocket science. Audiophiles spend many thousands trying
to recreate the most perfect audio possible. They
install a cartridge made by one company into a turntable
made by another. It's connected to a pre-amp made by
another, which feeds a power amp made by another, which
is powered from a line conditioner made by another. Then
there's speakers made by another, and of course they're
connected via special oxygen-free copper wires made by
another. They're fussy beyond belief and pick the best
equipment for each job, and it's not all made by the
same company.?
?Audiophiles like that annoy me. Several blind tests must
be performed, and a confidence level of 95% must be achieved
for any statistical significance. I highly doubt they will
be able to tell the difference between which speaker wire is
used on a blind test.?
Honestly, I would be surprised if some of these people
who think they know what they are talking about would even
be able to tell the difference between a tube amp and a
solid state in a blind test, but I may be proven wrong, and
in that case I'm all for it!
_._,_._,
|
Re: Why use a purpose built repeater box as a repeater rather than a transmitter, receiver, and controller tied (lashed) together?
This website was interesting to see what the limits of my ears are on dynamic range, pitch, phase, and audio bit rates:
On Wed, Jan 20, 2021 at 3:04 PM Mike Langner < mlangner@...> wrote: I have an audiophile brother in law who purchased a special power line ¡°balancing transformer¡± because he said if he turns the volume up all the way and puts his head next to one of his speakers he can hear a very weak hum.
I asked him if he could hear the hum with normal volume and seated at his listening position.
¡°No,¡± he said, ¡°but I know it¡¯s there.¡±
Mike/
K5MGR
? Mike Langner
(505) 898-3212 home/home office
(505) 238-8810 cell
mlangner@... ?
|
Re: Why use a purpose built repeater box as a repeater rather than a transmitter, receiver, and controller tied (lashed) together?
I have an audiophile brother in law who purchased a special power line ¡°balancing transformer¡± because he said if he turns the volume up all the way and puts his head next to one of his speakers he can hear a very weak hum.
I asked him if he could hear the hum with normal volume and seated at his listening position.
¡°No,¡± he said, ¡°but I know it¡¯s there.¡±
Mike/
K5MGR
? Mike Langner
929 Alameda Road NW
Albuquerque, NM 87114-1901
(505) 898-3212 home/home office
(505) 238-8810 cell
mlangner@... ?
|
Re: Why use a purpose built repeater box as a repeater rather than a transmitter, receiver, and controller tied (lashed) together?
?The best I know of is special wire from the equipment to the 120 volt AC receptacle in the wall.?
I need to get out of the ham radio market and start selling stuff like this!?
|
Re: Why use a purpose built repeater box as a repeater rather than a transmitter, receiver, and controller tied (lashed) together?
We are using communications quality audio. It is to communicate, not for high fidelity music. Oh the number of times that someone has been 100% copy and yet someone complains that it isn't broadcast quality. And speaking of broadcast, we are not supposed to broadcast, we transmit! Mick - W7CAT ----- Original Message ----- From: "Ralph Mowery via groups.io" To: " [email protected]" Sent: Wednesday, January 20, 2021 02:41:41 PM Subject: Re: [repeater-builder] Why use a purpose built repeater box as a repeater rather than a transmitter, receiver, and controller tied (lashed) together? One can sell some of the audiophiles most anything.? ?The best I know of is special wire from the equipment to the 120 volt AC receptacle in the wall.? I have seen ads for that 6 to 10 feet of wire go for over $ 100.? They are too hung up not to think of the cheap 20 to 100 feet of wire in the wall going to the breaker box or the junk aluminum wire from there to the power transformer. We are using communications quality audio .? Frequency response limited from about 300 to 3000 Hz at the most. Ralph ku4pt
On Wednesday, January 20, 2021, 04:15:25 PM EST, Skyler Fennell wrote:
Without exception? We're talking about audio, not rocket science. Audiophiles spend many thousands trying to recreate the most perfect audio possible. They install a cartridge made by one company into a turntable made by another. It's connected to a pre-amp made by another, which feeds a power amp made by another, which is powered from a line conditioner made by another. Then there's speakers made by another, and of course they're connected via special oxygen-free copper wires made by another. They're fussy beyond belief and pick the best equipment for each job, and it's not all made by the same company.
?Audiophiles like that annoy me. Several blind tests must be
performed, and a confidence level of 95% must be achieved for any statistical significance. I highly doubt they will be able to tell the difference between which speaker wire is used on a blind test. Honestly, I would be surprised if some of these people who think they know what they are talking about would even be able to tell the difference between a tube amp and a solid state in a blind test, but I may be proven wrong, and in that case I'm all for it! _._,_
-- Untitled Document
|
Re: Why use a purpose built repeater box as a repeater rather than a transmitter, receiver, and controller tied (lashed) together?
One can sell some of the audiophiles most anything.? ?The best I know of is special wire from the equipment to the 120 volt AC receptacle in the wall.? I have seen ads for that 6 to 10 feet of wire go for over $ 100.? They are too hung up not to think of the cheap 20 to 100 feet of wire in the wall going to the breaker box or the junk aluminum wire from there to the power transformer.
We are using communications quality audio .? Frequency response limited from about 300 to 3000 Hz at the most.
Ralph ku4pt
On Wednesday, January 20, 2021, 04:15:25 PM EST, Skyler Fennell <electricity440@...> wrote:
Without exception? We're talking about audio, not rocket science.
Audiophiles spend many thousands trying to recreate the most
perfect audio possible. They install a cartridge made by one
company into a turntable made by another. It's connected to a
pre-amp made by another, which feeds a power amp made by another,
which is powered from a line conditioner made by another. Then
there's speakers made by another, and of course they're connected
via special oxygen-free copper wires made by another. They're
fussy beyond belief and pick the best equipment for each job, and
it's not all made by the same company.?
?Audiophiles like that annoy me. Several blind tests must be performed, and a confidence level of 95% must be achieved for any statistical significance. I highly doubt they will be able to tell the difference between which speaker wire is used on a blind test.?
Honestly, I would be surprised if some of these people who think they know what they are talking about would even be able to tell the difference between a tube amp and a solid state in a blind test, but I may be proven wrong, and in that case I'm all for it!
_._,_
|
Re: Why use a purpose built repeater box as a repeater rather than a transmitter, receiver, and controller tied (lashed) together?
Hi Skyler,
>Audiophiles like that annoy me.
Sure, but my point was the audio goes through all those devices
and still comes out good. I don't know why a
receiver/controller/transmitter audio chain is so feared. We're
talking <300 Hz to 5 kHz. We hotshot technical types really
ought to be able to handle it.
73,
Bob
On 1/20/2021 2:15 PM, Skyler Fennell
wrote:
toggle quoted message
Show quoted text
On Wed, Jan 20, 2021 at 1:41
PM Bob < bob@...>
wrote:
Hi Dan,
>When you throw a controller in-line, even on the
best purpose-built repeater, you will sacrifice audio
quality, often just to add voice IDs and announcements.
I disagree, this is mixed in and the original audio is
not touched when the voice announcement is not playing. I
built a basic controller with the dumbest mixer circuit ( 2
resistors) and the original audio is practically untouched.?
If you are using a DSP system like AllStar link to
process and rebroadcast your audio, of course, quality will
be sacrafised.?
?
Without exception? We're talking about audio, not
rocket science. Audiophiles spend many thousands trying
to recreate the most perfect audio possible. They
install a cartridge made by one company into a turntable
made by another. It's connected to a pre-amp made by
another, which feeds a power amp made by another, which
is powered from a line conditioner made by another. Then
there's speakers made by another, and of course they're
connected via special oxygen-free copper wires made by
another. They're fussy beyond belief and pick the best
equipment for each job, and it's not all made by the
same company.?
?Audiophiles like that annoy me. Several blind tests must
be performed, and a confidence level of 95% must be achieved
for any statistical significance. I highly doubt they will
be able to tell the difference between which speaker wire is
used on a blind test.?
Honestly, I would be surprised if some of these people
who think they know what they are talking about would even
be able to tell the difference between a tube amp and a
solid state in a blind test, but I may be proven wrong, and
in that case I'm all for it!
_._,_._,
|
Re: Why use a purpose built repeater box as a repeater rather than a transmitter, receiver, and controller tied (lashed) together?
On Wed, Jan 20, 2021 at 1:41 PM Bob < bob@...> wrote:
Hi Dan,
>When you throw a controller in-line, even on the best
purpose-built repeater, you will sacrifice audio quality, often
just to add voice IDs and announcements. I disagree, this is mixed in and the original audio is not touched when the voice announcement is not playing. I built a basic controller with the dumbest mixer circuit ( 2 resistors) and the original audio is practically untouched.?
If you are using a DSP system like AllStar link to process and rebroadcast your audio, of course, quality will be sacrafised.? ?
Without exception? We're talking about audio, not rocket science.
Audiophiles spend many thousands trying to recreate the most
perfect audio possible. They install a cartridge made by one
company into a turntable made by another. It's connected to a
pre-amp made by another, which feeds a power amp made by another,
which is powered from a line conditioner made by another. Then
there's speakers made by another, and of course they're connected
via special oxygen-free copper wires made by another. They're
fussy beyond belief and pick the best equipment for each job, and
it's not all made by the same company.?
?Audiophiles like that annoy me. Several blind tests must be performed, and a confidence level of 95% must be achieved for any statistical significance. I highly doubt they will be able to tell the difference between which speaker wire is used on a blind test.?
Honestly, I would be surprised if some of these people who think they know what they are talking about would even be able to tell the difference between a tube amp and a solid state in a blind test, but I may be proven wrong, and in that case I'm all for it!
_._,_._,
|
Re: Why use a purpose built repeater box as a repeater rather than a transmitter, receiver, and controller tied (lashed) together?
Dan,
Do you have much real experience with Kenwood hardware??? The TKR-750v2 and TKR-850v2 are excellent repeaters. I've not experienced any of the "problems" you suggest are common and I've had a small fleet of them installed for better than a decade now.? They're as close to bulletproof as any repeater I've ever encountered.? I run pHEMT RX preamps and a variety of window filters, including 2-pole and 4-pole front end crystal filters on the VHF gear, duplexers on some systems, etc. Most of these systems are colocated with high-power broadcast gear.? As far as performance, they kick butt and take names.
Sorry you've had bad experiences.? But, your experiences are not typical, from what I've seen.
73, David KB4FXC
toggle quoted message
Show quoted text
On Tue, Jan 19, 2021 at 09:41 PM, Dan Woodie wrote:
Jim,
?
Calling Kenwood repeaters "damn good" is going a bit far.? They are better than average but certainly have their shortcomings.? A Quantar, GTR8000, Codan/Daniel's, or MastrIII would be more in the class of "damn good".? To meet that classification requires certain reliability, a variety of external interfaces, external freq reference ability, and duty cycle requirements in my opinion.? While the Kenwood repeaters are easy to setup and have good audio they have to be derated for high-duty-cycle and the only (rebranded) PSU they offer for them has a tendency to fail and sometimes melt down the output terminals.? Anything over about 20W requires a third-party or Kenwood rebranded amplifier. I can confirm however that they are definitely not mobiles in a box like the Bridgecom, Yaesu, some Icoms, and older low-tier Motorola (non-public-safety) repeaters.??
?
For the folks claiming "no desense" I would bet the majority don't know the procedure for measuring desense and EVERY repeater has some level of desense, even with the best hardware and duplexers.? It is unavoidable as any high-powered transmission will increase the noise floor - so the goal is to reduce the impact of this.? Adding a preamp in many cases actually makes matters worse, not better, and if your receiver is that deaf it isn't going to fix it.? The only place a preamp makes sense is in a TTA or Multicoupler where it is used to compensate for splits and bring things back to unity gain..? Most mobiles simply do not have the level of filtering (TX and RX) to perform as well as a purpose-built repeater.? Also most purpose-built repeaters have far better audio quality when used with internal controllers and have audio levels optimized.? When you throw a controller in-line, even on the best purpose-built repeater, you will sacrifice audio quality, often just to add voice IDs and announcements.? ?A better approach is to connect said controller to a wireline or similar and mix it with the repeated TX audio or use logic table to set priority and/or ID holdoff.? The other benefit is if you use a digital-capable repeater such as a Quantar you don't give up that capability just to add voice IDs.
?
Yes I have built repeaters from mobiles.? Yes I have used many different purpose-built repeaters.? Yes I have seen many Ham Hack Jobs and have seen quite a few thrown out of sites for causing issues.? If you put some engineering and common sense into things you will end up with a nice system- if not you are likely to end up with a mediocre system that is rarely used and is just there to satisfy your ego - which is the only reason for most voice IDs I might add.? Many will not like to hear this but it is the truth.
?
Thanks,
?
Dan Woodie, CETsr
KC8ZUM
|
Re: Why use a purpose built repeater box as a repeater rather than a transmitter, receiver, and controller tied (lashed) together?
Hi Dan,
>When you throw a controller in-line, even on the best
purpose-built repeater, you will sacrifice audio quality, often
just to add voice IDs and announcements.
Without exception? We're talking about audio, not rocket science.
Audiophiles spend many thousands trying to recreate the most
perfect audio possible. They install a cartridge made by one
company into a turntable made by another. It's connected to a
pre-amp made by another, which feeds a power amp made by another,
which is powered from a line conditioner made by another. Then
there's speakers made by another, and of course they're connected
via special oxygen-free copper wires made by another. They're
fussy beyond belief and pick the best equipment for each job, and
it's not all made by the same company.
73,
Bob
Bob Schmid, WA9FBO
S-COM, LLC
P.O. Box 1546
LaPorte, CO 80535
970-416-6505
On 1/19/2021 10:40 PM, Dan Woodie
wrote:
toggle quoted message
Show quoted text
Jim,
Calling Kenwood repeaters "damn good" is going a
bit far.? They are better than average but certainly have
their shortcomings.? A Quantar, GTR8000, Codan/Daniel's, or
MastrIII would be more in the class of "damn good".? To meet
that classification requires certain reliability, a variety of
external interfaces, external freq reference ability, and duty
cycle requirements in my opinion.? While the Kenwood repeaters
are easy to setup and have good audio they have to be derated
for high-duty-cycle and the only (rebranded) PSU they offer
for them has a tendency to fail and sometimes melt down the
output terminals.? Anything over about 20W requires a
third-party or Kenwood rebranded amplifier. I can confirm
however that they are definitely not mobiles in a box like the
Bridgecom, Yaesu, some Icoms, and older low-tier Motorola
(non-public-safety) repeaters.??
For the folks claiming "no desense" I would bet
the majority don't know the procedure for measuring desense
and EVERY repeater has some level of desense, even with the
best hardware and duplexers.? It is unavoidable as any
high-powered transmission will increase the noise floor - so
the goal is to reduce the impact of this.? Adding a preamp in
many cases actually makes matters worse, not better, and if
your receiver is that deaf it isn't going to fix it.? The only
place a preamp makes sense is in a TTA or Multicoupler where
it is used to compensate for splits and bring things back to
unity gain..? Most mobiles simply do not have the level of
filtering (TX and RX) to perform as well as a purpose-built
repeater.? Also most purpose-built repeaters have far better
audio quality when used with internal controllers and have
audio levels optimized.? When you throw a controller in-line,
even on the best purpose-built repeater, you will sacrifice
audio quality, often just to add voice IDs and announcements.?
?A better approach is to connect said controller to a wireline
or similar and mix it with the repeated TX audio or use logic
table to set priority and/or ID holdoff.? The other benefit is
if you use a digital-capable repeater such as a Quantar you
don't give up that capability just to add voice IDs.
Yes I have built repeaters from mobiles.? Yes I
have used many different purpose-built repeaters.? Yes I have
seen many Ham Hack Jobs and have seen quite a few thrown out
of sites for causing issues.? If you put some engineering and
common sense into things you will end up with a nice system-
if not you are likely to end up with a mediocre system that is
rarely used and is just there to satisfy your ego - which is
the only reason for most voice IDs I might add.? Many will not
like to hear this but it is the truth.
Thanks,
Dan Woodie, CETsr
KC8ZUM
On Tue, Jan 19, 2021, 9:52 PM
Jim Barbour < wd8chl@...> wrote:
> On
1/16/2021 10:53 PM, TGundo 2003 via wrote:
>> To retort:
>>
>> Many, if not most, current "factory" repeaters today
are nothing more
>> than 2 mobiles in a box
None of the Kenwood repeaters are "2 mobiles in a box". They
are all
built as repeaters. And damn good ones too.
(from a guy who has put together a bunch of Micor rptrs...)
|
Re: Another basic digital voice question.
Thanks for the clarification Matt, I was in the unclear group, given the recent output from the FCC regarding illegal activity and the use of radio for nefarious reasons, which is why I asked the question. Yes, Jim I do know streaming is not radio, however it is still a form of rebroadcasting in the general sense of the meaning. According to Wiki Broadcasting is the of or video content to a dispersed via any electronic ,
Yes it goes on to say:? but typically one using the (), in a model.
However, it does not exclude any other means, which is why I asked the question.
|
Re: How to use a VGA monitor with your broken HP gear
The 'video out' is the connector you need to connect to an external monitor or the GSB8200 type board.
On Wednesday, January 20, 2021, 10:09:37 AM EST, BJN644 <bartnewhouse@...> wrote:
Thanks for the info. I have an HP 8935, I assume it would work on this as well, I have a couple of BNC connectors one is labeled "scope monitor out" and the other BNC is "video out". I assume it would be one of these connections that would go to the GBS8200 board? Thank you.
_._,_._,_
|
Re: How to use a VGA monitor with your broken HP gear
Thanks for the info. I have an HP 8935, I assume it would work on this as well, I have a couple of BNC connectors one is labeled "scope monitor out" and the other BNC is "video out". I assume it would be one of these connections that would go to the GBS8200 board? Thank you.
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Re: Tuning procedure for Mobile Duplexer TFE6030A
Thanks for the info! I was able to find the tuning procedure here? in the message archives and, combined with your insights, it all makes sense now. The extra adjustments are capacitors to maximize the PASS characteristics of the transmit channel. I think it will still work for my purpose even with the low isolation since I'm only planning to use a couple of watts out.
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Re: TPRD-1554 Troubleshooting
Do you have any idea what the value and voltage rating of the capacitor should be? I'm out of town on a job so I can't check my notes, but from memory it should be 1-14 pF, Johanson 5402 or similar. And could you recommend a preferred vendor? Jeff's parts stock. Email me direct, I'll be back in town this weekend. --- Jeff WN3A -- This email has been checked for viruses by Avast antivirus software.
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JeffBanke