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Author Topic: am kit receiver cmc-707  (Read 1220 times)

Offline princessalex

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am kit receiver cmc-707
« on: May 05, 2012, 01:33:34 AM »
tanong ko lang po mga kuya kung bakit po sa am radio receiver na ginawa ko for school project isa lang station ang nakukuha. sinunod ko naman po ung instruction ng teacher ko at ginawa ko na rin ung adjustments ng if cans. maraming salamat po in advance and idagdag ko posana kung may paraan po para ma test ang mga if cans kung sira. ung square na may pihitan sa taas na ibat iba ung kulay.

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am kit receiver cmc-707
« on: May 05, 2012, 01:33:34 AM »

Offline insomartin

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Re: am kit receiver cmc-707
« Reply #1 on: May 05, 2012, 01:57:30 AM »
secret... antay ka lang... may expert tayo dito regarding jan. psssst calling updated..

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Re: am kit receiver cmc-707
« Reply #1 on: May 05, 2012, 01:57:30 AM »

Offline louiex

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Re: am kit receiver cmc-707
« Reply #2 on: May 05, 2012, 06:56:37 PM »
up^^^^^

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Re: am kit receiver cmc-707
« Reply #2 on: May 05, 2012, 06:56:37 PM »

Offline efren

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Re: am kit receiver cmc-707
« Reply #3 on: May 05, 2012, 07:08:55 PM »
up^^^^^
na encounter ko din yan nung project namin sa high school way back early 80's, palitan mo IF transformers, ang mga nabibile kasi ngayon lalo na sa mga kit inferior ang kalidad, kung may makakahoy ka sa mga lumang AM radio mas maganda.
check mo rin pagkakahinang sa wire ng antenna coil, minsan akala mo nakadikit na pero di pala natunaw ang insulation ;)
"just keep 'em glowing"

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Re: am kit receiver cmc-707
« Reply #3 on: May 05, 2012, 07:08:55 PM »

Offline efren

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Re: am kit receiver cmc-707
« Reply #4 on: May 05, 2012, 07:17:34 PM »
naalala ko pa nuon 2SB324 & 2SD352 ang output, Germanium transistors, maganda tumunog, ngayon 8050 & 8550 na, gusto ko parin yung dati :)
meron pa nilabas na kit ang CMC (Celco) noon 4.5V version, C829 ang front end at C828 ang IF transistors mas sensitive sya, at maganda din ang sound quality kasi germanium(B324/D352) din ang output.
"just keep 'em glowing"

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Re: am kit receiver cmc-707
« Reply #4 on: May 05, 2012, 07:17:34 PM »

Offline insomartin

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Re: am kit receiver cmc-707
« Reply #5 on: May 05, 2012, 08:03:03 PM »
bamboo stick pang adjust

Offline e-tronix

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Re: am kit receiver cmc-707
« Reply #6 on: May 05, 2012, 08:20:21 PM »
tanong ko lang po mga kuya kung bakit po sa am radio receiver na ginawa ko for school project isa lang station ang nakukuha. sinunod ko naman po ung instruction ng teacher ko at ginawa ko na rin ung adjustments ng if cans. maraming salamat po in advance and idagdag ko posana kung may paraan po para ma test ang mga if cans kung sira. ung square na may pihitan sa taas na ibat iba ung kulay.
buti ka nka isa kaagad.

Offline BhongTech

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Re: am kit receiver cmc-707
« Reply #7 on: May 05, 2012, 08:41:24 PM »
bamboo stick pang adjust
Pwede... ;)
merun naman nabibiling plastic tools for alignment para hindi ka mahirapan, pagmay bakal ang gamit na pang adjust hindi mo makukuha ang tamang alignment ng mga IF transformer.

Offline p®otocol

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Re: am kit receiver cmc-707
« Reply #8 on: May 05, 2012, 08:47:12 PM »
Pag binili mo yung kit may kasamang instructions yan sis ah, tatlo ung IFT right? nakalagay dun ko anung una pipihitin mo, taz next na pipihitin, ang natandaan ko lang dun ilagay mo sa pinakamahinang CH tapos saka mo gawin ung mga steps dun sa instructions.
[nO MatTer How GiFteD yOu aRe, yOu aLonE cAnNot cHanGe tHe WorLd]

Offline insomartin

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Re: am kit receiver cmc-707
« Reply #9 on: May 05, 2012, 08:49:24 PM »
Pwede... ;)
merun naman nabibiling plastic tools for alignment para hindi ka mahirapan, pagmay bakal ang gamit na pang adjust hindi mo makukuha ang tamang alignment ng mga IF transformer.

ceramic tip dapat. yung nabibili na neon green may iron sa dulo.

Offline BhongTech

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Re: am kit receiver cmc-707
« Reply #10 on: May 05, 2012, 09:00:03 PM »
yung gamit ko noon ay pure plastic lahat walang iron sa dulo,ok naman matibay din, hanggang sa nawala ko na ang mga ito. ;D

kung merun kang ibang radio pwede mo itong gawing reference,ang ginagawa ko noon ay i set ko ito sa dulong istasyon at dyan ako mag umpisa mag adjust.

Offline Ikasamoko

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Re: am kit receiver cmc-707
« Reply #11 on: May 06, 2012, 12:32:21 PM »
Bili ka ng bbq stick..piliin mo yung bamboo na meron skin..then shape mo na parang maliit na screwdriver...or ifit mo sa IF slug...then initin mo sa stove para tumigas...

Offline princessalex

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Re: am kit receiver cmc-707
« Reply #12 on: May 06, 2012, 10:18:07 PM »
mga sir up ko lang po ulit anyway tnx po ulit sa mga nag reply hindi po ba puede ang metal na precision screwdriver mag kaka issue po ba sa calibration?

Offline p®otocol

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Re: am kit receiver cmc-707
« Reply #13 on: May 06, 2012, 10:27:24 PM »
mga sir up ko lang po ulit anyway tnx po ulit sa mga nag reply hindi po ba puede ang metal na precision screwdriver mag kaka issue po ba sa calibration?

as sabi ng mga masters, personally i havent tried, yung ginamit ko nun ung metal.
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Offline ultrasonic™

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Re: am kit receiver cmc-707
« Reply #14 on: May 07, 2012, 10:10:29 AM »
sa amin dito sa davao.. kahit di na galawin ang mga IFT at ang Red Osc. coil.
makakakuha ka  agad ng 5 channels..

nag a- IF Alignment lng kami at nagtatracking procedure pag gusto naming dadagdagan...
syempre with the help of RF signal Generator
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Offline Ikasamoko

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Re: am kit receiver cmc-707
« Reply #15 on: May 07, 2012, 10:17:26 AM »
mga sir up ko lang po ulit anyway tnx po ulit sa mga nag reply hindi po ba puede ang metal na precision screwdriver mag kaka issue po ba sa calibration?

Yes..mahirap ialign using metallic tools nababago kasi yung inductance ng coil if metallic/magnetic yung gagamitin mo pang align..

Offline MX45

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Re: am kit receiver cmc-707
« Reply #16 on: May 07, 2012, 10:27:35 AM »
tanong ko lang po mga kuya kung bakit po sa am radio receiver na ginawa ko for school project isa lang station ang nakukuha. sinunod ko naman po ung instruction ng teacher ko at ginawa ko na rin ung adjustments ng if cans. maraming salamat po in advance and idagdag ko posana kung may paraan po para ma test ang mga if cans kung sira. ung square na may pihitan sa taas na ibat iba ung kulay.


Ts.. ito rin ang naging problema ko noong nag aral pa ako.. pero ang solusyon dyan is yung RED IF pag swapin mo lang ang connection nya sa primary marami kasi baliktad ang widing nyan. paara hindi kana bumuli pa.
Gawin mo ang nais mo, sundin mo ang gusto mo dahil ikaw o ang sarili mo ang hari ng yung kagustuhan...

Offline ultrasonic™

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Re: am kit receiver cmc-707
« Reply #17 on: May 07, 2012, 10:50:30 AM »
tanong ko lang po mga kuya kung bakit po sa am radio receiver na ginawa ko for school project isa lang station ang nakukuha. sinunod ko naman po ung instruction ng teacher ko at ginawa ko na rin ung adjustments ng if cans. maraming salamat po in advance and idagdag ko posana kung may paraan po para ma test ang mga if cans kung sira. ung square na may pihitan sa taas na ibat iba ung kulay.

di pala ako nakabigay ng sagot.. test mu lang ang winding nya through ohmmeter.  kng may continuity pa. pag walang resistance reading.. putol na iyong winding nya sa loob.

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Offline bravokilo

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Re: am kit receiver cmc-707
« Reply #18 on: May 07, 2012, 02:02:14 PM »
An AM radio circuit is really so simple. Just review all connections. Sana may signal gen ka. Feed 455 khz sa primary ng yellow IF, then tune all slugs until you get loudest output. Make sure you have modulation ang signal mo.Now, if you have another good set of radio at same volt, mate the front end of the good radio to the new kit. Front end includes the local osc(red) and the mixer Q. ang interface dun lang sa collector ang mixer.Now, if you are near BF Homes, Pque....bring it to me.

BK 0922 281 0680

Offline MX45

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Re: am kit receiver cmc-707
« Reply #19 on: May 07, 2012, 02:11:01 PM »
di pala ako nakabigay ng sagot.. test mu lang ang winding nya through ohmmeter.  kng may continuity pa. pag walang resistance reading.. putol na iyong winding nya sa loob.




yung 2 pin nayan sa drawing na 1.8 ohms ang dapat e reverse ang wiring .. kung 1 station lang ang nasasagap pero sa ( red IF lang )
Gawin mo ang nais mo, sundin mo ang gusto mo dahil ikaw o ang sarili mo ang hari ng yung kagustuhan...

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Re: am kit receiver cmc-707
« Reply #19 on: May 07, 2012, 02:11:01 PM »

 

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