Vegakit FM Transmitters..

xitronics · 22nd May 2007, 03:16 PM

Has anybody tried using the Vegakit 1WATT FM Transmitter..? I am having a terrible time tuning it and making it operational..

gmphadte · 23rd May 2007, 05:07 AM

What did u power it with and what is recommended?

Gajanan Phadte

xitronics · 23rd May 2007, 02:27 PM

@ Gajanan

Its rated o/p is 1watt. I have complete schematic of it posted on this thread :

Doubts regarding a 1Watt FM TX Kit

I have access to a DSO in my college I used to measure the output at various points in the ckt. RF voltage(around 200-300mV) appears across the supply rails, something I am very concerned about. Is it due to inadequate decoupling..?

Anyways please have a look at the the ckt diag. Its a very common design implemented by low-cost FMTx manufacturers.

gmphadte · 24th May 2007, 06:27 AM

The components after soldering should remain in one position and if u move any, then your circuit will behave differently. Moreover u should install it in a metallic case like the one used for tv tuners.

Use a voltage regulator near the ckt with a small coil/series resistor of less than 10 ohm, composition type.

Gajanan Phadte

addi · 31st March 2011, 11:29 AM

hey hi i am from goa and i have used the transmitter its coolllllllll.

addi · 31st March 2011, 11:33 AM

its coolllllll i have tried it but it broke after falling. but it was cooool

22nd May 2007, 03:16 PM	#1
xitronics diyAudio Member Join Date: May 2005 Location: Mumbai	Vegakit FM Transmitters.. Has anybody tried using the Vegakit 1WATT FM Transmitter..? I am having a terrible time tuning it and making it operational..

24th May 2007, 06:27 AM	#4
gmphadte diyAudio Member Join Date: Jul 2003 Location: Dona paula, Goa	component placement... The components after soldering should remain in one position and if u move any, then your circuit will behave differently. Moreover u should install it in a metallic case like the one used for tv tuners. Use a voltage regulator near the ckt with a small coil/series resistor of less than 10 ohm, composition type. Gajanan Phadte

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23rd May 2007, 05:07 AM	#2
gmphadte diyAudio Member Join Date: Jul 2003 Location: Dona paula, Goa	What did u power it with and what is recommended? Gajanan Phadte

23rd May 2007, 02:27 PM	#3
xitronics diyAudio Member Join Date: May 2005 Location: Mumbai	@ Gajanan Its rated o/p is 1watt. I have complete schematic of it posted on this thread : Doubts regarding a 1Watt FM TX Kit I have access to a DSO in my college I used to measure the output at various points in the ckt. RF voltage(around 200-300mV) appears across the supply rails, something I am very concerned about. Is it due to inadequate decoupling..? Anyways please have a look at the the ckt diag. Its a very common design implemented by low-cost FMTx manufacturers.

31st March 2011, 11:29 AM	#5
addi diyAudio Member Join Date: Mar 2011	hey hi i am from goa and i have used the transmitter its coolllllllll.

31st March 2011, 11:33 AM	#6
addi diyAudio Member Join Date: Mar 2011	its coolllllll i have tried it but it broke after falling. but it was cooool

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