Homemade Radio Repeater COR using Bendix King LMH-3142 VHF Base/ Mobile Transceivers

[santitox1]

hey bro can you help me find the pin location to tap a squelch trigger board to a uniden sportcat m/n-sc150b

[mannydeguzmanjartist]

@santitox1

I wouldn't advice to mess with the squelch circuitry of a portable scanner because the parts were either compact or tiny. And you might end-up wiring an external board for the squelch relay switch. But anyway, it is easier to find the squelch ic and the correct tap with a schematic diagram. I am not familiar with the squelch schem used in your scanner, but by looking on other popular Bearcat scanners, they used the common MC3359 FM IF IC. See if yours has the same and test for pins

[djAcide2010]

hi i need help how can i connect my m-tech sx 35 dsc to a power lead for home use can i just connect strait to car battery

[czartcabanela]

Sir ano po bang vhf radio ang malakas, GP2000 or IC-V85E magkano po naman nabibili ang ganitong mga radio?

[haroldvideos]

diba pang eroplano din yung BENDIX KING

[mannydeguzmanjartist]

Karamihan ng products and equipments nila pang aviation, tulad ng radar at altitude meters. Pero may mga products din sila na pang commercial 2 way communications like this 2 meter VHF base/ mobile 30 watt radio (LMH3142)

[mannydeguzmanjartist]

The test and demo made in this project were conducted with the use of a test antenna or a dummy load, and the frequencies being transmitted upon were not assigned to any licensed group.

I also reduced or limit the power to 5 watts from the original 30 watts output of the Bendix King LMH3142, fso as not to interfere with any licensed operations if in case the transmitted signal in the 164 Mhz band signal reached over the air.

[arigatooguzaimasu]

sir salamat sa info...sir ask lang me mgkano ba ang pinakamura na radio jan sa pinas..gagamitin ko sana farm ko pg uwi..nkabili ako ng kenwood th 25 dito luma na model.ayos po yan na model?

[mannydeguzmanjartist]

Depende sa model at brand ng radio. Ang portable handheld dito pag second hand, pinakamura na yung P1,000.00 pesos. Pag base radio naman, mga P3,000.00

...I don't know about Kenwood radios, hindi pa ako nakagamit nyan. Puro Icom at Yaesu lang ang nahawakan kong radyo. Tapos ngayon Bendix King handheld and base radios naman ang ineexplore.ko

[arigatooguzaimasu]

thanks sir

[mannydeguzmanjartist]

The standard rule is "yes" you need to be a licensed Ham in order to transmit at 144 - 146 Mhz amateur band, a low cost effort (I think a hundred bucks) if you passed the amateur license exam by NTC.

If you will be operating on the commercial bands, say 148 - 173 Mhz band, you need to take the Radio - Land/ Mobile (RLM) seminar and pay a greater cost.

You may not be licensed provided you never transmit on any licensed frequency which requires you to identify your NTC assigned callsign..

[arigatooguzaimasu]

sir salamat.plan ko ksi mg buy ng radio..gamit lng b sana sa pinas..pero yong walky talky pwede walang license ba?salamat po and more power...

[mannydeguzmanjartist]

Depende sa frequency at radio na gagamitin mo. "Walkie talkie" refers to any handheld portable transceivers, including licensed radios.

Citizens Band Radios (27 Mhz) were banned during the Marcos regime and up to this time due to interference. 2 meter radios (144 Mhz) and UHF (440 Mhz) requires license.

If you want compact and license-free short range (2 mile) radios, go for FRS (Family Radio Service). It operates on UHF frequencies at 462 and 467 Mhz, 1/2 watt power and fix rubber duck.

[mannydeguzmanjartist]

To be license-free, your equipment must meet certain requirements: The legal power must not exceed 1 watt. 2 watt FRS/ GMRS (8 mile) radio might require license as mentioned by FCC (I don't know here in the Philippines). The rubber duck antenna must be fixed to the radio, and no external antennas shall be connected. I only modify FRS radios for educational purposes but for public use, that is illegal.

Lastly frequencies should be within the FRS band,

Madami ako nabili sa ukay-ukay, mura lang

[arigatooguzaimasu]

sir ask lang me kong kailangang p ba ng license kon magmodulate ako sa 144 mhz?salamat..