Batboard

PRR

So hang time is not available for a digital channel? I thought it was, as well as SIT, especially since the help file for SIT says to make sure SIT is set at least as long as hang time, but preferably longer. I'll have to look at this more closely.

Thanks.

PRR

When a Trbo repeater is operating in digital mode, what exactly is the difference between traditional hang time and SIT (Subscriber Inactivity Timer)? Based on the description in the CPS, SIT sounds merely like a second hang timer.

PRR

Two considerations from years of experience deploying temporary systems on a weekly basis:
1) Larger diameter coax (RG213, RG214, 9913, 9913F7, LMR400[-UF]) tends to hold up better, if for no other reason than it tends to command a greater psychological respect from users.
2) Coax of any type in ...

PRR

CP Communications in Westchester County, NY, a leading provider of temporary large scale RF and fiber optic systems to the TV and special event industries, is seeking an experienced and motivated individual to be a supervisor in our two-way radio communications department.

The qualified candidate ...

PRR

Central Westchester County, NY RF communications company, a leading provider of RF and fiber optic systems to the TV and special event industries, is seeking a motivated individual to work full time in the two-way radio department selecting, programming, packing and checking in equipment orders ...

PRR

Central Westchester County, NY RF communications company, a leading provider of RF and fiber optic systems to the TV and special event industries, is seeking a motivated individual to work full time in the two-way radio department selecting, programming, packing and checking in equipment orders ...

PRR

We've had very good experiences with this 26' lighting grip stand, sans the head mount:
http://www.bogenimaging.us/code/bius/A3 ... earch=true

Henry

PRR

TX/RX (http://birdtechnologies.thomasnet.com/item/components/ll-categories-components-isolators-and-circulators/81-70-26-series?&seo=110);
Telewave (http://www.telewave.com/pricelist/isolators.html); and
EMR (http://emrcorp.com/catalog/78/181/pdf/Iso_Cir%20650-1000.pdf)
all make very good isolators ...

PRR

Presuming you're using fiberglass dipole or colinear designs, 7dB antennas have a significant null directly below the bottom. If height is at a premium (two 7dB fiberglass antennas will be about 14' before separation), a half wavelength should be fine, a little more than 1 foot in the low 450's, but ...

PRR

we are taking the antenna out of one radio into tx side of duplexer, then second radio is on the rx side of duplexer ... 15 watts out of radio into duplexer then 50 ft coax into antenna ...

we are combining tx and rx not tx, to tx

so 1 pair of tx and rx into one antenna
Sorry - Misunderstood ...

PRR

we are using separate radios for tx and rx then run into a combiner ... 15 watts into a 7 db gain yagi ... each radio is only tasked with one job either tx or rx and yes we can use different codes for each that works.

all of this has to be ina road case in limited space and in a road case so its ...

PRR

Unfortunately I can't provide an exact date for you. As you likely already know, 47 CFR 90.301-315 defines where the channels can be used the the requirements to get a license on those channels. 90.301 shows a creation date of 22 November 1978, with amendments 17 April 1997.

http://wireless.fcc ...

PRR

Despite a misconstrued inclusion of humor, the inquiry regarding the authorization date of T-band, with a relevant cite(s) to the FCC website (NPRM's or R&O's not simply the Part 90 regulation) was - and is - completely serious. I've tried a myriad of search terms and phrases on Google with no ...

PRR

Does anybody know when (specific year please) T-band (470-512MHz) two-way radio operations was first authorized?

Bonus point: Cite relevant document(s) on FCC website: NPRM's or R&O's; not simply Part 90 regs.

Bonus bonus point: How many T-band frequencies are currently programmed into Alex's ...

PRR

What is a "mike phone"? Do you mean microphone?

Henry

PRR

Intersting stuff. I'm looking at installing an alarm system at a remote building with no landline service, but has excellent gsm cell service. I wonder how well this would work to hook up to the alarm system to dial the monitoring service. Anyone have thoughts on this?
https://www.telular.com ...

PRR

For what it's worth, I wouldn't dismiss the DTRs too quickly: Not only has Humhead had a pair to demo for quite sometime now and experienced performance and coverage exceeding his 4 watt UHF radios, but we took them on a job to play with in a highrise hotel. These things worked through 47 (yes ...

PRR

I need an experienced contractor in Canada for the installation of radiating coax in a tunnel complex (about 650') for April 20th - April 24th in Niagara Falls. We are the consultant for the project and a system design and materials list has been drawn up.

For those of you north of the border who ...

PRR

The 25th is my preference.

Henry

PRR

nickjc wrote:After binging..that way the time to haul you in to the barrakcs is real short.....

Ok Alex, that settles it: We meet anywhere not in Nick's jurisdiction (or where he has 'friends').

Henry

PRR

Count me in, assuming I'm not out of town or on a job.

For what it's worth, if it's decided to meet outside of Manhattan, I'll vote for White Plains

Henry

PRR

Other than a loose front end, I feel the R1225 does at least approach it...

True, but a $250 - $350 preselector or notch pass filter takes care of most of the front end selectivity shortcomings. Still a bargain in non-critical, non super hostile RF environments, IMHO.

Henry

PRR

If all that is required is 10 watts, I'll second Wavetar's suggestion of the r1225. We have a fleet that, with forced air cooling, have run in continuous transmit at 30 watts for up to two week periods many, many times. This is on top of the fact that the units have their power cycled between ...

PRR

TWL911 is correct; you need at least the RLN4515 programmer to radio adapter plate to connect the GP350. You don't need the RLN4514 battery adapter plate as you can still use a GP300 battery or (better yet) an external power supply to power the radio.

Henry

PRR

Thank you very much Tony. We'll give it a go.

Henry

PRR

So once the new crystal is installed, the microprocessor will allow the radio to power up fully?

Henry

PRR

We have a UHF P1225 (16ch) that came in with a frequency error in excess of 8KHz. Our junior tech (and I use that term generously) decided he could correct that in the service menu by adjusting the TX frequency warp all the way to the extreme, rather than asking a senior tech. The result is a radio ...

PRR

I think the Motorola we all know and loved left the company back when the last Galvin got out . . .

I would make the argument that the last Galvin (Chris) was a major contibutor to Motorola's current business philosophy as well as troubles. It was his father Robert who led the company through the ...

PRR

Just a few quick thoughts:

First, I would recommend a Pelican case (or one of the other manufacturer clones such as Storm and SKB) instead of an aluminum type: They don't deform as easily and thus remain watertight and dust tight longer. They have a variety of sizes and internal mounting plates ...

PRR

Probably looking for 400+ conventional UHF radios (16 channel minimum) for a split one and two week rental in Las Vegas Nov 7th - 18th. If anyone has this kind of inventory local to Vegas, or can recommend a local/nearby source, please PM me for further details or with information.

Thanks for the ...

PRR

Does anyone have a schematic for the HTN9630 rapid charger they could share? Not sure of the revision number (I believe it's 'A'), however the marking on the PC board is 505B-A.

Already tried Elgin/Schaumburg: They don't seem to have a clue, and the schematic in the GP300 service manual is quite ...

PRR

Even if I take the antenna off and jam the N connector on the LMR600 into the antenna of the cell phone, I get nothing.

Have you checked to see if the donor antenna, connection and coax are all good? Are you sure the donor antenna is aimed to the correct cell tower for the service you seek ...

PRR

Maybe PRR will un-lurk and chime in...

Gee Justin, that's why we call you 'Mr. Subtle' :)

We take the packaging approach on a rental by rental basis depending on how much and what type of equipment is going out, but Pelican cases (and sometimes their lesser expensive clones) are our primary ...

PRR

The simplistic answer is
1) Go to Radio Wide Configuration and change the operation to bi-directional, and
2) Get a second R1225.

More importantly however, what is it you're trying to accomplish?

Henry

PRR

Are you looking for an actual ear-mic kit where the user talks and listens through a single transducer in the ear? If so, Telex http://www.telexlmr.com and Earinc http://www.earinc.com/p2-headsets-earmic.php make very nice units. Savox is another manufacturer, but I have no experience with them ...

PRR

http://www.markertek.com/ProdList.asp?c ... rch=0&off=

Henry

PRR

M34GMC20D3AA

FROM WHAT I CAN GATHER, this was really an 8 channel radio that was forced via software to go 16 channel...although I'm not sure I am totally correct on that..

Is that the model number displayed in the RSS when you read the radio, or simply from the barcode label on the bottom of ...

PRR

What's the model number? I might have a codeplug I can send you.

Henry

PRR

Nand wrote:

Some RSS packages do have sample code plugs with them; most do not. But it brings up an interesting point. If the RSS did come with sample code plugs, why would there be a need for posting these unless the RSS wasn’t obtained the proper way?

I was thinking of the codeplug values in ...

PRR

Since the legality question is a serious one, might I suggest that until it can be resolved, that the site remain operational to upload only. Sort of donating to the library until it can open. This way, if and when the decision is made to allow downloading, there'll (hopefully) be a substantial ...

PRR

You'll need a small capacitor to block DC voltage (5V, 47uf is small and works well) as well as a resistor (about 500ohms, 1/8 watt). Take a speaker/mic cable and solder the cap and resister in series on the mic+ lead of the cable (white, I believe) and to pin 2 of the 4 pin male XLR. Both ...

PRR

I would suggest a filter media in front of the fan. Mouser sells (in various sizes) a filter kit which is a plastic retainer matching the bolt pattern of the fan it's sized for, a low restriction filter media and a snap retainer cover to hold the filter in place. They're pretty inexpensive (under $9 ...

PRR

The PSU part number is 2580427B01. Don't have any in stock but we typically place a Motorola order weekly. PM me if you're interested in purchasing one.

Henry

PRR

http://www.radiodesignlabs.com/stcl1.htm

Try Production Audio in Melbourne. 03-9878-1444.
http://www.productionaudio.com.au

Henry

PRR

Disclaimer: I did actually work directly for PRR on a show last year, but my impressions are strictly those of a duly impressed user, not someone trying to push a product.

Justin, do I send the check to the same place? :D

As for the GM300 interface, Mrtor basically has it figured out. The line ...

PRR

Since we don't use RG58 (except for coax that's part of a mag mount), I think I'll stay out of that discussion. :wink:

I understand the noise issue braid against foil can create, especially since they are typically dissimiliar metals. This is something I hadn't considered. But, wouldn't there ...

PRR

Just use a piece of shielded audio wire for the jumper like I saw going from a Desktrac to the PA once!

Balanced or unbalanced?

PRR

Posts in several threads by the more knowledgeable and experienced members of this forum have stated a preference for double braided coax (i.e. RG142, RG214) over braid over foil (such as TM's LMR series). After reviewing the published specifications by Belden and Times, it appears, at least when ...

PRR

Wireless mic TX power varies with make, model and frequency band; anything from 10mW to 250mW. According to the spec sheet, the Telex PB-1 is rated at 35 - 45mW, while the PR-1 receiver's 12dB SINAD sensitivity is .65uV. Both units really need to be checked as well as the RX antenna and coax, along ...

PRR

Alex - You're getting quite sardonic in your old age.

Search found 99 matches

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P1225 alignment/programming problem

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Schematic for HTN9630

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