[Merged] Radio talk

[kimpOy]

magulo nga, anyways i bought a 3 miler FRS/GMRS
motorola T4800 2,500 2 pcs, pwede na!

subukan nila kunin eto...

[luckytruck]

war mode na si kimpoy ah.

andy

[altec]

OK, nagreply na ang comm dept namin. According to their contact, bawal ang FRS radio in the phils, di pwede gumamit, di pwede iparehistro. If they catch your FRS, its confiscated period. Kung ganun, naging lagay pala yung binayad ni promdiboy na 1,800. Tapos yung 1,000 fixed payment, ano yun?

[promdiboy]

meron ako receipt from their office, ingat nalang talaga, para di makotongan.

[afrasay]

Dapat ata sa mga hotel o sa mga sosi na mall like Rustan's and the like mag abang ang NTC guys. Maraming gumagamit na dirver/bosings nito. Tignan natin kung hindi makatikim sila ng *#$!%^&^%! Hindi kaya pakana ng mga celphone provider kasi hindi na kailangan gumamit ng celphone pag within range ka nito?

[luckytruck]

why punish the consumer? dapat yung mga stores na naga-benta. walang malay naman ang consumers.

andy

[altec]

ako nga, nag order sa friend ko sa states, motorola t4900 talkabout, $24.99 per pair as per internet search. Bahala na ang ntc sa buhay nila.
Promdiboy, what does your receipt say? Registration or penalty payment? Kasi kung para sa penalty lang, doesn't mean that your radio is now registered. So next time, pwede ka pa rin mahuli. Parang smoke emission test, pang renewal lang pero kung nahuli ka on the road, it does not apply.

[promdiboy]

its a registration receipt for 2 units.

[oldblue]

pa-update lang po, baka puwede na FRS d2 sa 'tin? since mag-1 yr na din tong thread, baka may pi-nass na laws.

balak ko sana bumili ng 5 miler na motorola.

*promdiboy, kung nde mo kaya nabanggit yun store mo, ma-trace ka. kasi gagawa na lang ako ng code system kung yan lang prob.

[Greaseman]

Naku! muntik na akong nakabili nyan, yong
midland brand naman with 5W up to 22km
range mga php6,500 lang.

[oldblue]

ressurect ko lang thread na'to. I bought cobra 6-milers. I read in another forum na dyan daw sa mga taga-probinsya, na-modify yun units to increase coverage area. dinadagdagan daw ng crystals or something, baka may alam kayo papa-modify ko na lang, I dont care about the warranty.

I recently tried this, ok naman nasa glorietta 4 cinema ako while yun driver nasa 1st level basement na-kausap ko pa din. pero noon inutusan ko na may pick-up in sa bandang landmark, wala na signal.

[oldblue]

tanong lang po meron ba way to extend my frs radio antenna sa tsikot para lalo mas lumakas signal, pansin ko kasi nakakapag-radio lang ako pag bukas ang windows, eh uso pa naman carjacking ngaun hehehe

[StraightSix]

Ngayon ko lang nabasa ang thread na ito (newbie eh). Pahabol ko lang sa topic kahit huling-huli na ...

Back in my college days, I remember an old radio law stating that any transmitter capable of transmitting more than 200mW (or 250mW yata) has to be regulated. Ordinary toy walkie-talkies need not be regulated because of this, also radio control (R/C) transmitters, remotes, etc. ... hence, the need for registration/regulation for higher-powered transmitters even if it is typed as a toy or remote control.

When the Private Radio Service was drafted back in the early 90's, there were no type-accepted radios yet, and units accepted for registration were mostly Ham Radio VHF units (that were supposed to be locked-out of the Ham frequencies), with a promise to upgrade to PRS radios in 5 years time yata. From the posts here it mukhang magulo pa rin hanggang ngayon.

I'm not familiar with FRS and GMRS (not interested anymore), but I would've thought these are the types ideal for the Private Radio Service. Yun nga lang, it isn't wise to assume that FCC regulations are the same as the NTC's.

Marami din kalokohan diyan sa NTC ... maraming pasado sa exams kahit alam mong bagsak, dahil katabi mo at walang sagot, pero pag nakuha yung results pasado naman ... yung mga na-confiscate na radio sila-sila ring taga-NTC gumagamit wala din silang lisensya ... may FCC-donated van (for listening/scanning) sa Manila nuon, bininyagan nila kaagad ng excursion sa Baguio - "official use" kasama ang shopping.

* oldblue - yung mod regarding crystals involve the frequency range (number of channels). It has nothing to do with distance. If you want to increase the distance (transmit AND receive), the antenna is the most important factor. Generally it's a case of "the bigger, the better", as long as it is tuned at the right frequency.

[boybi]

* oldblue - yung mod regarding crystals involve the frequency range (number of channels). It has nothing to do with distance. If you want to increase the distance (transmit AND receive), the antenna is the most important factor. Generally it's a case of "the bigger, the better", as long as it is tuned at the right frequency.

hindi ibig sabihin na kapag mahaba ang antenna e mas malakas na ang signal or transmit/receive. meron pong specific length ng antenna for each frequency range or band.

[StraightSix]

hindi ibig sabihin na kapag mahaba ang antenna e mas malakas na ang signal or transmit/receive. meron pong specific length ng antenna for each frequency range or band.

Just to make sure we're talking on the same "wavelength", we're refering to (kamot-ulo) wavelength which is the speed of light divided by the frequency, right? Where the ideal reference antenna is an isotropic dipole having unity gain in free space, if my memory serves me right.

The last time I checked, a closed loop antenna 1λ-long (whether cubical, delta or circular) has a gain over a ¼λ dipole. Feed impedance is about 100Ω, pero pwedeng i-match yan down to 50 or 75Ω which is more common on transceivers. Now, one whole wavelength is DEFINITELY longer than your average quarter-wavelength. How about a tuned 5/8-λ? It's also longer. A Yagi-Uda array (that's the proper name) is bigger, and the gain is also bigger. A Rhombic antenna has to be several wavelengths long to be worthwhile, but you can bet it's even bigger.

Last ... your ordinary dish antenna exhibits tremendous gain. Have you ever wondered what the wavelength is? You might be surprised how relatively short it is compared to the size of the dish. Marami pang iba, all relatively bigger than a dipole or each other.

As I said, generally, the bigger the better. But it has been a while since my Ham radio days ... due to old age o kalawang, I maybe wrong - but then again, maybe I'm not

[111prez]

afaik, FRS started in the US. the FCC allocated a bandwidth for the use of FRS or family radio service provided that it is short range and for non commercial purposes such as family recreation.

in the philippines, the ntc has not allocated any FRS bandwidth, to the best of my knowledge

hmmm, ma check nga

we used to have these 1st gen motorola frs radios and at that time, when someone from the ntc asked, we just said na laruan lang ito, hehehehe

[boybi]

tanong lang po meron ba way to extend my frs radio antenna sa tsikot para lalo mas lumakas signal, pansin ko kasi nakakapag-radio lang ako pag bukas ang windows, eh uso pa naman carjacking ngaun hehehe

pwede ka magkabit ng external antenna, pero dapat supported ito ng radio mo. si afrasay naka external antenna yung car nya for FRS radio. and make it sure na for FRS (UHF) yung ikakabit mong external antenna, maiksi lang ito (less than 1ft) unlike yung pang VHF na mahahaba (around 1m).

[boybi]

Just to make sure we're talking on the same "wavelength", we're refering to (kamot-ulo) wavelength which is the speed of light divided by the frequency, right? Where the ideal reference antenna is an isotropic dipole having unity gain in free space, if my memory serves me right.

The last time I checked, a closed loop antenna 1λ-long (whether cubical, delta or circular) has a gain over a ¼λ dipole. Feed impedance is about 100Ω, pero pwedeng i-match yan down to 50 or 75Ω which is more common on transceivers. Now, one whole wavelength is DEFINITELY longer than your average quarter-wavelength. How about a tuned 5/8-λ? It's also longer. A Yagi-Uda array (that's the proper name) is bigger, and the gain is also bigger. A Rhombic antenna has to be several wavelengths long to be worthwhile, but you can bet it's even bigger.

Last ... your ordinary dish antenna exhibits tremendous gain. Have you ever wondered what the wavelength is? You might be surprised how relatively short it is compared to the size of the dish. Marami pang iba, all relatively bigger than a dipole or each other.

As I said, generally, the bigger the better. But it has been a while since my Ham radio days ... due to old age o kalawang, I maybe wrong - but then again, maybe I'm not

para akong nag physics class a.

to make it simple, ang commercially available na external antenna for FRS (UHF) ay yung maiksi lang (less than 1ft) while for VHF is yung parang walis tingting (about 1m).

[karl88]

didn't know that you need a license for this type of radios (now i know after reading the threads). I have a pair of motorola FR50 which my son and i use. gamit namin para alam niya na nasa labas na ako ng gate ng school niya kapag sinusundo siya. anyway, since he now has a cellphone, the FR50's are just in the glove compartment.

during my younger years (i am still young pa din naman) in my hometown in the south, i get to talk to people from indonesia... and when the airwaves are clear pati taga australia, through our CB/SSB radio.

[StraightSix]

para akong nag physics class a.

to make it simple, ang commercially available na external antenna for FRS (UHF) ay yung maiksi lang (less than 1ft) while for VHF is yung parang walis tingting (about 1m).

Sorry ... it wasn't my intention. Actually, nahirapan akong magkamot ng ulo Yung difference in length between VHF and UHF antennas - the higher the frequency, the shorter the wavelength is.