Belkin | TuneCast | – Belkin Tunecast II FM Transmitter Mod. Home Sign Up! Explore Community Submit All Art Craft Food Games Green Home. I’m using a Belkin Tunecast II, with the longer antenna mod, and the quality of the audio is terrible. The coverage is not too bad, but its full of. the Belkin tunecast 2 FM transmitter can be modified to extend the transmit range. It can put out over milliwatts of RF power and be heard.

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One could also connect an external antenna to pin Headphone Reviews and Discussion – Head-Fi. I will try all of these suggestions later when I get home Without a doubt, the 12vdc power contributed greatly to the range.

I’ve got a Tunecast II with runecast slightly different board than the ones in the pictures you’ve posted Unsolder blue wire from here Image Notes 1. I’m also getting enough “hiss” to be annoying no matter what station I choose. I’ve done the tv booster trick with the older tunecasters and got remarkable rusults, upwards of. So you can hook it up to the 5v or 12v power from the tunecas. First off, thank you for helping. Lot’s of nice and interesting info, in this topic and in the whole forum SO what you are saying is tunevast you attached the antenna wire to the outside of the attenuator, or a differant spot.


So if you want to do it, it’s at your own risk! I was testing the distance last evening, Same distance with the new mods. Just plug it int the disk drive connector.

Belkin Tunecast II mod

It’ll take allot of gain at least 20db gain to get any good range, but it’s a nice stable stereo signal, and this amp will do the trick. Remove R36 and R39 the resistors which connect to groundshort across R37 and just leave C38 and L4 between the output and belkon antenna. The higher up it is, the better. Here’s a couple of photos of the board, any ideas, I don’t need a great range, only about 25 foot.

RF output power is about milliwatts. One cannot just connect ohm coax into a radio’s ohm antenna socket and expect optimal performance.

Power was from a 12vdc ma wall-wart. After the holiday I will try to do more to it with regards to the attenuator, but since its working I don’t want to break it yet: The following is a theoretical exercise for educational purposes only, and not a definitive solution for boosting the tunecast output power to get better reception. Has anyone ever built that RF amp for the Tunecast? With this modification I’m now getting an additional velkin to the broadcast area for a total of about a ‘ radius.


However, the following made this work fine: Two different tutorials on modding the Tunecast II transmitter by adding a more effective Antenna.

The wire before the attenuator, means that nothing is passed thru it. That cleared it all up for me.

– Belkin Tunecast II FM Transmitter Mod |

Q1 – what kind of of coax? I removed the old antenna just ripped it off and soldered a new line to the board on tunedast same position as shown in reply Does anyone want to verify this?

The unit really does need this hack though because the range is pants.

The car adapter is just feeding 12v into the tunecast. When the unit is assembled, the coax can be routed out the hole where the audio cable is stored. How about a longer audio cable? Should you dare proceed, the procedure is easy enough, simply bypass the tiny inductor.