Hi, have anyebody had trouble building the ELENCO 108 AM/FM RADIO KIT

[michael1978]

You need to follow the instructions for getting the correct windings of the coil in circuit with the correct phasing.

Also, an updated *sharp* image of the big Spring your improved soldering would be great.

They have another resistance not like in book i dont know what to do
here the result

T15:TP1=4.11V
T15:TP2=0.54V
T15:TP3=7.33V
T15:TP4=7.33V
T15:TP5=1.32V
T15:TP6=7.92V
T15:TP7=1.32V
i go to desoldeer FM party and i send you foto tomorow.​

 

[Audioguru]

Are you using rosin core solder?

 

[michael1978]

Are you using rosin core solder?

I use stannol, but audioguru, when i start to solder i use dvm everythink the result was like in book, when i measure

 

[michael1978]

You need to follow the instructions for getting the correct windings of the coil in circuit with the correct phasing.

Also, an updated *sharp* image of the big Spring your improved soldering would be great.

Goodmornin steve, i desoldeer the fm, and i soldeer it, i hear 1 station with earphone, speaker he have very low volume

 

[(*steve*)]

I'm not sure what got autocorrected to "big Spring", but I'd really like to see a new, sharp image of the board showing your soldering.

 

[michael1978]

I'm not sure what got autocorrected to "big Spring", but I'd really like to see a new, sharp image of the board showing your soldering.

ok no problem i with take a photo, just one moment, i dont understand why the spekaer dont work,

 

[michael1978]

I'm not sure what got autocorrected to "big Spring", but I'd really like to see a new, sharp image of the board showing your soldering.

Hey steve i have a good news, i change the battery, now FM i pick up 8 stations but speaker dont work, and also AM i dont pick up nothing

 

[michael1978]

Hey steve i have a good news, i change the battery, now FM i pick up 8 stations but speaker dont work, and also AM i dont pick up nothing

Thanks for advice, i was think in to put more solder is beter, but i was scary to hold the solder to the leads of components and to whait, i was think he gonna burn componnent

 

[michael1978]

I'm not sure what got autocorrected to "big Spring", but I'd really like to see a new, sharp image of the board showing your soldering.

Hello, i send email from my gsm to my email but he did not come to my email the picture, So i just want to tell you i fixt fm i must to connect one wire, so is working with speaker perfect …
but can you help to fix am please

 

[(*steve*)]

I'm sorry, I don't understand the problem? A wire as come loose?

 

[michael1978]

I'm sorry, I don't understand the problem? A wire as come loose?

No i mean i forget to connect that wire because of that is working perfect FM. My mistake

 

[michael1978]

I'm sorry, I don't understand the problem? A wire as come loose?

Hi steve, i fix it, there was two problems, first they did not show it the book for one wire where to connect for FM, second the say green and red to coil to do it together, so i make green with black vola, the problem is fix it,
THANK FOR TIME MY FRIEND, MAYBE I WAS BORIGN YOU....FORGIVE ME

 

[Audioguru]

"BORIGN"? This is dyslectic for BORING. Maybe the Elenco kit manufacturer has dyslectic employees writing the assembly instructions.

Many years ago I made an Eico FM tuner kit that used vacuum tubes then later when FM stereo was invented I made a stereo multiplex decoder for it. They worked perfectly. My Heathkit stereo power amplifier also worked perfectly but its tubes needed replacements often. My old oscilloscope was also a kit and still works perfectly today.

 

[michael1978]

"BORIGN"? This is dyslectic for BORING. Maybe the Elenco kit manufacturer has dyslectic employees writing the assembly instructions.

Many years ago I made an Eico FM tuner kit that used vacuum tubes then later when FM stereo was invented I made a stereo multiplex decoder for it. They worked perfectly. My Heathkit stereo power amplifier also worked perfectly but its tubes needed replacements often. My old oscilloscope was also a kit and still works perfectly today.

Yes audioguro, i cant just say that is perfect tuner, very high kwalitet

 

[Audioguru]

Years ago, at work I won two Sony portable FM stereo Walkmans that play through headphones. I live in a big city and they are missing RF AGC so they are overloaded by the many strong radio stations. They have a "local-distant" attenuator switch to pickup the local stations without overload but then they do not pickup the distant stations.

I bought a Sylvania clock radio at a clearance store for only $1.75 and its radio parts pickup local FM stations very well but since the little speaker and low value coupling capacitors sound awful I used larger coupling capacitors and a cable to feed a 6.5" woofer/dome tweeter speaker so it sounds really good.

 

[bushtech]

No in between amplification? The clock radio sufficient to drive a 6.5" speaker?

 

[Audioguru]

No in between amplification? The clock radio sufficient to drive a 6.5" speaker?

My cheap clock radio has an output at clipping of about 0.5W into 8 ohms (an LM386 power amp IC with a 9V supply) which is plenty for a bedroom. I never have the amplifier clipping. My 6.5" woofer and dome tweeter are much more efficient and are much louder than the squeaky little 3" speaker that the clock radio comes with.

I have an amplifier using an LM390 IC (it uses bootstrapping and a larger package for a higher output power than an LM386) powered from 9V that clips at 1.0W and is used for playing CDs. It drives another 6.5" woofer/dome tweeter.