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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.
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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. On Wed, Jan 20, 2021 at 03:41 PM, Bob wrote:
? -- 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:
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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: 16 vs 8 bit audio On Wed, Jan 20, 2021 at 3:04 PM Mike Langner <mlangner@...> wrote:
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Re: Why use a purpose built repeater box as a repeater rather than a transmitter, receiver, and controller tied (lashed) together?
Mike Langner
¿ªÔÆÌåÓýI 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. ? Mike Langner (505) 898-3212 home/home office ? |
Re: Why use a purpose built repeater box as a repeater rather than a transmitter, receiver, and controller tied (lashed) together?
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 knowof 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 responselimited from about 300 to 3000 Hz at the most. Ralph ku4ptAudiophiles 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. 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 theyknow 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:
?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?
¿ªÔÆÌåÓýHi 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:
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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:
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.? ?
?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,
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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 On Tue, Jan 19, 2021 at 09:41 PM, Dan Woodie wrote:
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Re: Why use a purpose built repeater box as a repeater rather than a transmitter, receiver, and controller tied (lashed) together?
¿ªÔÆÌåÓýHi 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:
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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.
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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
WB5MCT
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. |
Re: Kenwood TK-760H VHF
At 1/19/2021 06:20 PM, you wrote:
On 1/10/2021 7:38 AM, MIKE CHRISTIE via groups.io wrote:Then why do my TK-860s have a narrow/wide setting? Kind of doubt Kenwood would put that in a commercial radio just for yuks.Thanks to all that replied. I found the problem thanks to Andy. The radio model I thought I had was a TK-760H which was what was on the Tag said but it also had after the 760H a "G" . Andy pointed out three clues, buttons on a newer model 760 were white, in program mode it should show "Programming" not "PC" and the TK760H uses the RJ11 and the TK760G uses the RJ45. Coupled with this information and the new TK760G programming software KPG56D which I had a copy of I was able to read and write to the radio. The Radio Tag was confusing to me the way it read "TK760HG" I had disregarded the the "G".Ding ding ding! Btw, the G in this case tells you that it is narrowband Bob NO6B |
Re: Why use a purpose built repeater box as a repeater rather than a transmitter, receiver, and controller tied (lashed) together?
Well..Kenwood repeaters are commercial radios and Type Accepted. Definitely not 2 mobiles in a box
Ken At 06:52 PM 1/19/2021, you wrote: ------------------------------------------------------------------------------On 1/16/2021 10:53 PM, TGundo 2003 via groups.io wrote:None of the Kenwood repeaters are "2 mobiles in a box". They are all built as repeaters. And damn good ones too.To retort: President and CTO - Arcom Controllers Makers of repeater controllers and accessories. Authorized Dealers for Kenwood and Telewave. We offer complete turn-key repeater packages! AH6LE/R - IRLP Node 3000 "We don't just make 'em. We use 'em!" [] |
Re: Why use a purpose built repeater box as a repeater rather than a transmitter, receiver, and controller tied (lashed) together?
On 1/16/2021 10:53 PM, TGundo 2003 via groups.io wrote:None of the Kenwood repeaters are "2 mobiles in a box". They are all built as repeaters. And damn good ones too.To retort: (from a guy who has put together a bunch of Micor rptrs...) |