@rurikdgreat,Galing ng rack design at napagplanuhan talaga. Eyesore yung sa akin at ang gulo ng wirings. Kulang na lang sauce para ulaming tulad ng spaghetti.I'm using a single Yagi-15 element, made by Ka Tiago if you may have heard of him. Had the setup to talk to some of my Baguio folks and La Union (sa business ni misis) and nung bago pa yung Yagi tried to mode with HAMS sa Bicol and Roxas sa Aklan. But just like what you've said dapat maganda rin ang working con nila para malinaw and qso. Propagation counts a lot too, parang 40m na sa madaling araw lang tahimik ang ere, walang kang maririnig na nagmomotor boat. Parang nakita yung setup mo ha, tanaw ba yan sa SLEX?
Tanong ko lang mga sir kung OK din ba yung mga radio sa Ebay??ready to use na pagdating?hehe
Yup, tripod kung tawagin yung tower ko kasi maliit lang ang lote, kung may guy wire aabot sa lote ng kapitbahay, hehe..
@rurikdgreat, I'm using google earth din to know where to point the Yagi exactly, you can also see the land topography kung may harang na bundok, buti na lang when transmitting to LaUnion or Baguio, lihis ako kay Mt. Arayat. Yup, tripod kung tawagin yung tower ko kasi maliit lang ang lote, kung may guy wire aabot sa lote ng kapitbahay, hehe...@wheeler, if you have time, daan ka na lang sa UNICO for brand new ones o kay Rey (left ng UNICO, katabi lang) to buy 2nd hand radios VHF 2m for a start. Guaranteed pa.
bmall,Thanks...Yes, Kenwood TR-9750 or any base/ mobile rigs with separate RX and TX boards can be made into a repeater as well. The good thing about this is that you can transmit and receive in duplex frequency without having to incorporate additional components, the relay switching for the RX and TX is already built-in.The only thing you need to do is to rewire the transmit PTT and the receive audio out, that is connect the audio output or headphone out to the mic input of the transmitter. Vary the audio input level by the use of the volume control. Again, consult the radio's schematic diagram when rewiring or pinning-out. I had damaged a base radio in the past by accidentally connecting a positive 8 volt pin on the mic jack with the mic audio input. Be sure you are connecting to the right line ports.Next, remove the receiver's antenna plug to the transmitter board's terminal. This means you have to separate the receiver's antenna input to the transmitter board. It is connected via a short piece of a thin coaxial cable (in my Kenwood TR-9130, it is colored white). There are two of this cable. The other is used to connect the main board's TX output to the final PA transmitter board. Look for the receiver's antenna cable, unplug it, and provide a separate SO-239 antenna jack for receive.The transmit and receive antennas must be farther away from each other, at least 10 feet apart. Then program the rig into full duplex (separate TX and RX frequencies). Program your handheld radio the other way around (RX frequency on the repeater should be the TX frequency on your portable transceiver. TX frequency on your handheld should be the RX frequency on your repeater.@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@Here's another neat idea. You can make a simple duplexer circuit using another relay switch, this time an RF triggered device. This will enable you to use a single antenna for both transmitting and receiving. The only difference between the Squelched triggered relay switch and the RF triggered relay is the transistor: In the RF triggered relay, you will be using RF transistors such as 2N2222 or 2N2907 (depends upon the circuit design if it requires either PNP or NPN type transistors). I came across a project on homebrewed linear amplifier incorporating that RF triggered relay. The title of the project is "The FARA 2m Amplifier Project". Go here: http://www.falara.org/tektalk/GPOAmp.htmlStudy the schematic diagram of that project and see if you can incorporate that to your repeater. The section in the circuit that we will be using is the "CARRIER OPERATED RELAY". The purpose of this RF triggered relay switch is to isolate the receiver's antenna to the transmitter's antenna and avoid stray RF overloading the receiver's front end. If you already had that RF triggered relay switch, all you have to do is connect one point of the relay switch (normally open) to the Receiver's Antenna, and the other relay's terminal to the transmit antenna. What the circuit does is to cut the line of the receiver's antenna output and provide the path to the transmitter's output to the antenna whenever an RF is detected by the relay switching device. This is a bolder project. We might need to change several components in the device since this was designed only to handle 5 watts or less RF input. We will be dealing with 50 watts output from the base rig, and this might overload the device without the proper choice of inductors, capacitors and resistors. I never tried this, but I might test this project in the future. @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@CTCSS - Continuous Tone-Coded Squelch System or CTCSS is a circuit that is used to reduce the annoyance of listening to other users on a shared two-way radio communications channel. Where more than one user group is on the same channel, (called co-channel users,) CTCSS filters out other users if they are using a different CTCSS tone or no CTCSS.Instead of turning on the receive audio for any signal, the two-way radio receiver's audio turns on only in the presence of the correct tone. This is akin to the use of a lock on a door. A carrier squelch or noise squelch receiver is unlocked and will let any signal in. A receiver with CTCSS locks out all signals except ones encoded with the correct tone.You were right bro, it is called "susi" in common Tagalog HAM language. @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@Big Capacitors in COR? It's optional. You can generate that time delay when you use your radio scanner's SCAN DELAY function. I think some other rigs has this feature.Cheers!MANNY DE GUZMAN, JR.Manila, PhilippinesWatch my video on my Homemade "Squelch Triggered Repeater using Radio Shack PRO-2052 Scanner and ICOM V68 Handheld Transceiver here:
bmall,Thanks...Yes, Kenwood TR-9750 or any base/ mobile rigs with separate RX and TX boards can be made into a repeater as well. The good thing about this is that you can transmit and receive in duplex frequency without having to incorporate additional components, the relay switching for the RX and TX is already built-in.The only thing you need to do is to rewire the transmit PTT and the receive audio out, that is connect the audio output or headphone out to the mic input of the transmitter. Vary the audio input level by the use of the volume control. Again, consult the radio's schematic diagram when rewiring or pinning-out. I had damaged a base radio in the past by accidentally connecting a positive 8 volt pin on the mic jack with the mic audio input. Be sure you are connecting to the right line ports.Next, remove the receiver's antenna plug to the transmitter board's terminal. This means you have to separate the receiver's antenna input to the transmitter board. It is connected via a short piece of a thin coaxial cable (in my Kenwood TR-9130, it is colored white). There are two of this cable. The other is used to connect the main board's TX output to the final PA transmitter board. Look for the receiver's antenna cable, unplug it, and provide a separate SO-239 antenna jack for receive.The transmit and receive antennas must be farther away from each other, at least 10 feet apart. Then program the rig into full duplex (separate TX and RX frequencies). Program your handheld radio the other way around (RX frequency on the repeater should be the TX frequency on your portable transceiver. TX frequency on your handheld should be the RX frequency on your repeater.@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@Here's another neat idea. You can make a simple duplexer circuit using another relay switch, this time an RF triggered device. This will enable you to use a single antenna for both transmitting and receiving. The only difference between the Squelched triggered relay switch and the RF triggered relay is the transistor: In the RF triggered relay, you will be using RF transistors such as 2N2222 or 2N2907 (depends upon the circuit design if it requires either PNP or NPN type transistors). I came across a project on homebrewed linear amplifier incorporating that RF triggered relay. The title of the project is "The FARA 2m Amplifier Project". Go here: http://www.falara.org/tektalk/GPOAmp.htmlStudy the schematic diagram of that project and see if you can incorporate that to your repeater. The section in the circuit that we will be using is the "CARRIER OPERATED RELAY". The purpose of this RF triggered relay switch is to isolate the receiver's antenna to the transmitter's antenna and avoid stray RF overloading the receiver's front end. If you already had that RF triggered relay switch, all you have to do is connect one point of the relay switch (normally open) to the Receiver's Antenna, and the other relay's terminal to the transmit antenna. What the circuit does is to cut the line of the receiver's antenna output and provide the path to the transmitter's output to the antenna whenever an RF is detected by the relay switching device. This is a bolder project. We might need to change several components in the device since this was designed only to handle 5 watts or less RF input. We will be dealing with 50 watts output from the base rig, and this might overload the device without the proper choice of inductors, capacitos and resistors. I never tried this, but I might test this project in the future. @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@CTCSS - Continuous Tone-Coded Squelch System or CTCSS is a circuit that is used to reduce the annoyance of listening to other users on a shared two-way radio communications channel. Where more than one user group is on the same channel, (called co-channel users,) CTCSS filters out other users if they are using a different CTCSS tone or no CTCSS.Instead of turning on the receive audio for any signal, the two-way radio receiver's audio turns on only in the presence of the correct tone. This is akin to the use of a lock on a door. A carrier squelch or noise squelch receiver is unlocked and will let any signal in. A receiver with CTCSS locks out all signals except ones encoded with the correct tone.You were right bro, it is called "susi" in common Tagalog HAM language. @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@Big Capacitors in COR? It's optional. You can generate that time delay when you use your radio scanner's SCAN DELAY function. I think some other rigs has this feature.Cheers!MANNY DE GUZMAN, JR.Manila, PhilippinesWatch my video on my Homemade "Squelch Triggered Repeater using Radio Shack PRO-2052 Scanner and ICOM V68 Handheld Transceiver here:
Hanep ang setup ni rurikdgreat..kakainggit!!
@rurikdgreatnakita ko sticker mo.."maamong tupa" ka rin?
mga ka-HAM, merong inaalok sa akin na ICOM IC-735 40m, palitan ko lang daw ng 2m radio, kung gumagana naman, siguro ok na deal na ito?
medyo napatingin uli ako sa pictures. hindi ko yata nahuli ibig mong sabihin, hehehe...
Author
Topic: May mga gumagamit pa ba ng HAM radio ngayon? (Read 20557 times)
