in search of a FM STEREO transmitter

[rasOfir]

hello again,
we (in Israel) working according to Europe standarts.
meaning i dont have to change anything... ;D ;D

my question today :
i want to build this on a protoboard (that board with holes and copper on on side that i solder thing to)...
1) whats the best way to solder the chip to this board ?? as the BH1417F is surface-mount only it doesnt have any "legs".
2) on the part list there r some part that are also surface-mount only, like the inductors, is there any replacements for them ?? same parts but with "legs" so i can solder them to the protoboard

 

[audioguru2]

Hi Rs,
That's correct, the surface-mount IC is tiny and has no legs.
It will be difficult, but you could connect your own 21 wires to it, or solder it to an adapter pcb.
You can easily make your own inductors.

Why not just buy the kit from Australia or New Zealand? Don't you know anybody there? I think Dazza in this forum is in "down under".
Kits-R-us in Hong Kong were also talking about making this kit.

 

[rasOfir]

(sorry for all the dumb questions )

could u explain how to DIY those inductors ? or point me to a place where i can learn how to do this, i need 2 diferent inductors.

wouldnt it be wizer to replace the 2xRCA with one female-headphone-jack ? i see no advantage of using RCA.

TNX FOR ALL THE HELP

 

[audioguru2]

Hi Ras,
The kit comes with a coil former and an adjustable ferrite core. I would just make a simple coil with 8 to 10 turns of 1mm enamelled wire tightly wound with a 3mm air core, and use an adjustable 5pF to 35pF trimmer capacitor for tuning. The 2 bigger inductors can be purchased.
You can use any kind of input jack. They used RCAs because most component CD players use them.

I know what! C'mon over here (Canada) and help me shovel the tonne of snow from my driveway, and do it again after the snowplow clears my street, and I'll build the Micromitter for ya. ;D

View attachment 36658

 

[dow]

Hi!
Sorry for bringing up such an old post.
I am in the search of a schematic for a small portable FM-transmitter and the micromitter seems to solve my problem! Does anyone have a copy of the article, or do I need to buy the entire magazine? I checked their webpage, and you cant see the entire article anymore (like someone posted ...more than a year ago ;P).

Best regards,
Alexander

 

[audioguru2]

Hi Alexander,
Welcome to our forum. ;D
Just now, I went to Google (link at the bottom of this page) and in the search box entered Silicon Chip Micromitter. The 1st link was the entire article for free. My browser is IE6 and I didn't need to delete cookies or anything.

 

[tikbalang]

you have to get to the website thru google. clear browser cache. search "Silicon Chip Micromitter" in google, click on google's link. do not go the website directly. it's a bug.

 

[CHITTY]

I HAVE SOME OF THESE CHIPS BA1404 BRAND NEW IF ANY ONE WANT SOME CONTACT ME 

 

[audioguru2]

Rohm stopped making their lousy analog BA1404 stereo FM transmitter IC and replaced it with with their excellent BH1417 Pll IC that is used in Silicon Chip's Micromitter.