JI1FGX/DU9 Mindanao, Philippines Amateur Radio Diary IOTA OC-130
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Access until yesterday
Introduction. 【【Lily Diary]
Diary of Life in Mindanao

10/12/31 TV antenna fabrication
10/12/24 Cute operator
10/12/23 Business and broadcasters consult with us.
10/12/17 Business Antenna Construction
10/12/15 Antennas found in the city
10/12/10 14MHz antenna repair completed
10/12/07 14MHz antenna destruction
10/12/04 Fare8 Club Christmas Party
10/12/04 Gigi Class C Retake
10/11/27 To Manila, PARA's General Assembly
10/11/16 A piglet was born.
10/11/06 Ham Shop Situation
10/11/02 Internet connection is not available
10/10/27 STANDARD C150 repair
10/10/22 Ham Shop Page
10/10/22 power outage
10/09/30 Autumn Condition
10/09/17 DU8UTP Franco.
10/09/12 Challenge PSK 31
10/09/07 Expansion of piggery
10/08/12 Antenna repair for 21 MHz
10/08/07 The 21 MHz antenna is broken.
10/08/06 Backyard and Antenna
10/08/03 sunset
10/07/31 Radio Commercials
10/07/03 Shack Introduction
10/06/21 Repeater Controller
10/06/07 Repeater Controller CW Routine
10/05/20 Clear sky, group of antennas
10/05/18 antenna group
10/05/13 50MHz also open
10/05/09 Election...eh! Are you sure?
10/05/06 How to write a card via manager
10/05/04 shack
10/04/20 VHF Repeater Orders Received
10/04/12 Philippine Military Group
10/04/11 business
10/04/05 21MHz and 50MHz antennas
10/04/04 Failed 50MHz installation
10/04/04 If not available, make one. 50MHz balun
10/04/02 If you don't have it, make it. Cross mount.
10/04/01 50MHz 5EL remanufactured
10/03/23 Four 16-meter-long bamboos
10/03/22 Production of 21MHz 3-element yagi
10/03/15 Purchase a generator
10/03/05 wire antenna
10/02/03 Broken again.
10/01/20 I'm going in the wrong direction.
10/01/19 18MHz Yagi breakage for Japan
10/01/04 7/8 2-stage 144MHz band GP
JI1FGX/DU9 Broadcasters consulted(2010/12/23)
FM and AM station in the city of Osamis asked us to help them upgrade their system.
One was to replace the FM transmitter from 300W to 5KW
The tower on top of the building is an antenna for FM broadcasting
This was a 300W RF POWER amplifier from an Italian company called RVR Elettronica
This is FM EXCITER.
This is another mysterious transmitting antenna
Since it looks like it has been in use for over 20 years, does this also need to be maintained or replaced before putting in 5KW?
Pulled from power amp with RG8 and connected between coax outside the wall
The soldering is suspiciously...
I'm not sure if this place can withstand 5KW either.
The second request was for AM broadcast system modification
The studio and the transmitting station are located 1 km apart and connected by a dedicated line (telephone line).
However, they wanted a wireless link because of frequent disconnections and theft of power lines.

I heard the term STL for the first time here, though,Studio to Transmitter Linkit was called (used in neg. sentences)

The photo is the studio. A very pretty girl, half American and half Filipino, was the DJ.Hi
Now, I wondered how it was linked to 1Km away, but there was an ordinary audio amplifier in the room.
The radio on the right was an ICOM amateur radio for communication with the transmitting station
The speaker output of the amplifier is connected directly to the telephone line!
The picture quality is poor from here because of my cell phone camera, but there was also an amplifier at the transmitting station.
The attenuated signal was amplified again by an audio amplifier and put into the transmitter.
This is a vacuum tube AM transmitter
This is the STL device I found on the Internet. (Studio to Transmitter Link)
It happens to be from RVR Elettronica. I don't know what the price is yet, but it will be a good price.

http://www.rvr.it/en/d/PTRL-LCD_RXRL-LCD_0310.pdf

Then, using Skype, I had Gigi call RVR Elettronica in Italy and say, "Can you speek english?"YesI tried to call directly to get a price, starting with "I'm sorry," but to my surprise, Italy also said, "I'm sorry.I'm already closed for the year for Christmas break, so please send me an email."I've already sent you an email and am awaiting your response.It ended with the "I'm sorry.



PTRL LCD | RXRL LCD | PTRL-LCD/S | RXRL-LCD/05-RXRLLCDRadio Links

PRIMARY APPLICATION: (1)

PTRL-LCD and RXRL-LCD are a broadband radio transmitter and receiver PTRL-LCD and RXRL-LCD are a broadband radio transmitter and receiver manufactured by R.V.R. Elettronica designed to carry audio signals to support sound FM radio broadcasting. This type of device is also known as STL (Studio-to-Transmitter Link). This type of device is also known as STL (Studio-to-Transmitter Link).

RADIO LINKS TOPICS:.

R.V.R. radio links are reputed for their optimal price/performance ratio at a R.V.R. radio links are reputed for their optimal price/performance ratio at a world-wide level.

AUDIO PERFORMANCE:.

key audio features are low distortion and intermodulation values and a high noise/signal ratio. noise/signal ratio.


I thought of having two radios, leaving the studio side on air, and having the transmitting station's radio be dedicated to receiving.
I tested it and found that even 500mW of the handheld radio is sufficient for reception, so I wondered if it would be possible to set the commercial radio to Low power and transmit 24 hours a day.

I found out that YAESU and ICOM professional repeater transceivers guarantee 100% Duty by reducing the power to half!

The broadcast engineer was concerned about the quality of the sound, but I told him it would definitely be better than the current system.

Which system will be adopted?

I'm afraid I'll just give you an estimate and you'll say, "Well, we don't have the budget, so we'll see..." ...

December 17, 2010   December 24, 2010