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.
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 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..." ...