May mga gumagamit pa ba ng HAM radio ngayon?

[bmall]

@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?   

[rurikdgreat]

@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?   

well, medyo naplano nga bago ko ipinagawa yon. tago mo na lang din yung mga wires sa likod, gaganda rin yan.

congratulations. malayo rin nararating ng signal mo. we all know na malaking achievement yan bilang mga hams, aside sa malaking scores during cq contest.

maganda ang antenna system mo. mukhang naka trylon self-supporting tower ka ah.

di tanaw sa slex ang antenna ko. medyo malapit na kasi ako sa laguna lake, less than 500 meters away. mababa ang elevation ko, ayon kay mr. google earth 39 feet above sea level.

[wheeler]

Tanong ko lang mga sir kung OK din ba yung mga radio sa Ebay??ready to use na pagdating?hehe

[bmall]

@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.

[rurikdgreat]

Tanong ko lang mga sir kung OK din ba yung mga radio sa Ebay??ready to use na pagdating?hehe

you can call unico sales center 733-1517 / 733-1501. tanong ka na lang kung ano mga available.

Yup, tripod kung tawagin yung tower ko kasi maliit lang ang lote, kung may guy wire aabot sa lote ng kapitbahay, hehe..

ganda nga ng tower mo. ano height noon? yung sa akin 55 ft. from the ground to the base of cp22e (f23 dati pero na-direct hit ng kidlat, nadurog hehehe). ano nga pala qth mo?

[wheeler]

@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.

thanks a lot sir...puntahan ko yan pag sapat na ang budget.ehee

[bmall]

@rurikdgreat, 55ft from the ground to the antenna base too.  QTH is Imus, Cavite.

[Dictador]

yah i still have a set up until now, you can see my set up to my picture in profile, like wise im still active in QSO, also QSO with the Q5 Y.L out there.....hahaha
nasa dugo ko na ata ang pagraradyo di n mawawala yan siguro kahit mag ka pamilya na ako!

[mannydeguzmanartist]

Hello there...

I just recently uploaded a YouTube video on my homemade SQUELCHED TRIGGERED REPEATER SYSTEM using the Radio Shack 2052 radio scanner as a receiver, and ICOM V68 as the transmitter. It uses a squelched trigger relay switch to enable a handheld or base transceiver. It is so simple that you might want to try it if your out of budget on a commercially made repeater or COR.

Check my DIY video at

http://www.youtube.com/watch?v=udQhiDKM_nw

Enjoy the hobby!!!

MANNY DE GUZMAN, JR.
SoundMagik Home Studio
Site Creator, TEENMODELS2007
http://teenmodels2007.wetpaint.com/

[bmall]

@mannydeguzmanart, very informative !    do you have any idea on how could I tap the squelch signal of the Uniden BC9000XLT and the UNIDEN BCT-7.  Para makagawa din ng repeater tulad ng sa iyo.

[mannydeguzmanartist]

bmall,

Thanks for the complement!

First of all, I'm not familiar with Uniden Bearcat models, as I have done these mods only with the Realistic PRO-2020 and Radio Shack PRO-2052 scanner radios which I have at the moment.

Though you can hack and add squelch trigger devices to any scanner receiver or 2 way radios of your choice (yes, you can tap the squelch circuit on the receive section of that ICOM 28H for a cleaner repeater performance on 2 meter!), I strongly suggest that you first study how the squelch circuit of your radio works. You must secure a schematic diagram of your radio. You must identify the squelch IC and see if a specification/ data sheet for that part number is available on the web.

Next identify the logic +5 volt pin of that IC. From what I read, it is a voltage comparator section of the circuit which outputs a +5 volt when a signal is present or when the squelch is closed, or 0 volt when it is open (silent) or vice versa. 5 volt is nominal, but in some radios like my Radio Shack Pro-2052 it is 3 volts. Even if you doesn't have a pin-out diagram of the squelch IC, you can try looking for that voltage logic pin using a digital tester and varying the squelch control (opening and closing the squelch). Just be careful not to short anything on those pins or you'll damage that squelch IC. Connect the negative test prods of your multimeter to negative ground or any metal part of your radio, and carefully tap the pins one by one with the positive tip of your tester while the squelch is open. If your digital tester reads something between +3 volts to +5 volts, then bingo! You got the right squelch tap.

Then you had to make a relay trigger switch. Search for an appropriate schematic on the web. You must be familiar with the relay switch connection. It must be able to activate the transmitter (your handheld transceiver or base radio) when a signal is present on the receiver.

A good working relay trigger device should activate even by merely touching the input with your finger. You should hear series of clicking sound on the relay while touching the input terminal (usually, one of the amplifier transistor pin)

If your receiver has a CTCSS (Tone Squelch), you can use this feature to safeguard your homemade repeater from unauthorized use or triggering which might hinder your operations.

You can do all these through experimentations like what I did. But be extra careful.

Good luck!


MANNY DE GUZMAN, JR.
Manila, Philippines


Watch my YouTube video "HOMEMADE REPEATER USING RADIO SHACK PRO-2052 AND ICOM V68" here:

http://www.youtube.com/watch?v=udQhiDKM_nw

[bmall]

pogi points for you my man!  I'll try to download schematics first before I go open up my receivers and look for the squelch triggering circuits.  I also have a Kenwood old rig TR-7950 yata yun, they tell me this radio unit can be a repeater since Rx board is separated from the Tx board, can you confirm this if you have an experience with it.  Just not sure of the model, I'll dig in first to my gadget cave, hehe...

CTCSS Tone Squelch, will check, this what they call the "susi' right?   Trigerring with a tone to activate the repeater.  No problem to do the relay switch, medyo I see big capacitors sa COR for timing delay upon release of the relay switch, is this required? 

All in all, I'll try to free up myself to do this.

[mannydeguzmanartist]

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.html

Study 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, Philippines

Watch my video on my Homemade "Squelch Triggered Repeater using Radio Shack PRO-2052 Scanner and ICOM V68 Handheld Transceiver here:

http://www.youtube.com/watch?v=udQhiDKM_nw

[mannydeguzmanartist]

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.html

Study 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, Philippines

Watch my video on my Homemade "Squelch Triggered Repeater using Radio Shack PRO-2052 Scanner and ICOM V68 Handheld Transceiver here:
http://www.youtube.com/watch?v=udQhiDKM_nw

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.html

Study 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, Philippines

Watch my video on my Homemade "Squelch Triggered Repeater using Radio Shack PRO-2052 Scanner and ICOM V68 Handheld Transceiver here:
http://www.youtube.com/watch?v=udQhiDKM_nw

[Kasamiko]

Hanep ang setup ni rurikdgreat..kakainggit!!

@rurikdgreat

nakita ko sticker mo.."maamong tupa" ka rin?

[bmall]

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?

[rurikdgreat]

Hanep ang setup ni rurikdgreat..kakainggit!!

thanks.

@rurikdgreat

nakita ko sticker mo.."maamong tupa" ka rin?

medyo napatingin uli ako sa pictures. hindi ko yata nahuli ibig mong sabihin, hehehe...

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?

@bmall
good deal na yan bro, HF to 2M. i-swap mo na agad baka magising pa sa katotohanan hehehe...

[Kasamiko]

medyo napatingin uli ako sa pictures. hindi ko yata nahuli ibig mong sabihin, hehehe...

ito po sir..

[rurikdgreat]

@kasamiko

ahh oo sticker nga yon, flag ng italy. ibinigay sa akin (with his QSL card) nong naka-usap ko sa HF from italy, souvenir nila hehehe...

[Kasamiko]

ah ok...thanks sir..