Hey, my friends,
I 've sucessfully constructed a FM transmitter.But its transmitting distance
doesn't meet with my satisfaction. For this reason , I'm going to turn to
another FM transmitter circuit project. The circuitry to be constructed is
in the attachment.
As I'm not a radio technician , there're many obstacles for me to overcome in
constructing that circuit.So , please help me , my friends , with this construction!
I ask for your help with my heart & soul.
Technical specifications of the circuit in the attachment are -
Working voltage ………………….. 12 to 18 v (DC)
Maximum current ……………….. 450 mA
Output power ………………………. 4 W
Frequency range ………………….. 88-108 MHz
In the parts list of that circuit ,
TR1 and TR2 are of type 2N2219 (npn) , and TR3 is of 2N3553 (npn) type.Wow!!
These types of transistor , I think , are very scarce or rare!! I couldn't buy these
models anywhere in my nation , Myanmar. This is one of two of major problems
I encounter!
So , I have to replace them with another transistor types. Therefore , what would
be the suitable substitutions for them? Be sure ,my friends , transistor types you
suggest are currently in use. I mean they must be available.
The next "big problem" that comes to me is that this circuitry uses RFC ( VK200 RFC tsok ).To say frankly ,my friends , I only know that RFC stands for "radio frequency choke" and I've never seen such a component!! How bad I am!? So where can I get these coils (RFC)? And could these "chokes" (RFC) be found in old circuits? Please, kindly give your helpful hands to me , my friends.Hey. dears! there is no "online store" available in my country!! So, I could not reach up to any "online stores." ( I mean "buying in online stores" is not available in my country , Myanmar.)
Dear my friends ,
I sincerely write the following lines with the words from my heart in a glimmering hope of " if someone of you reads these lines and be eager to help me."
The electronic components I list below (and also in the attachment) are not available in my country. But I desperately need them for my transmitter project.(Please , do not say ,my friends ,not to construct this project.One's hobby makes one crazy!!) Althrough I could be able to afford to buy them if they were available in my country, but they , indeed , aren't!!
Therefore , I would like to ask for help to someone of you who feels compassion on my writings. Dear, my friends , would you mind sending me a packing of these components listed below as soon as possible?
I really know that "Money is difficult to get." But I'm certainly sure I'm going to pay back the money to you who would send the packing to me , one day in the near future , say , when I have access to the online banking system.I think this is not too long to wait.
The address to which you have to send "the packing" is written in the attachment . You , my friend , just "print" that attachment and stamp it onto the packing addressed to me.( The lower part is written in my native language (Burmese) in order to make "sending the packing in my country " easy and sure there isn't liable to something bad. The address is fully completed.
( The List of components I desperately require are as follow
RFC (VK200 RFC tsok) = 5 or little more
2N2219 (npn) (Transistor)= 2
2N3553 (npn) (Transistor)= 2
LY89 (Phillips) (Transistor)= 1
Oh , my thread is a little long!! So , this is my sole and seeming , the last hope and only way to accomplish my transmitter project , really.
Thanks and waiting your replies,
I 've sucessfully constructed a FM transmitter.But its transmitting distance
doesn't meet with my satisfaction. For this reason , I'm going to turn to
another FM transmitter circuit project. The circuitry to be constructed is
in the attachment.
As I'm not a radio technician , there're many obstacles for me to overcome in
constructing that circuit.So , please help me , my friends , with this construction!
I ask for your help with my heart & soul.
Technical specifications of the circuit in the attachment are -
Working voltage ………………….. 12 to 18 v (DC)
Maximum current ……………….. 450 mA
Output power ………………………. 4 W
Frequency range ………………….. 88-108 MHz
In the parts list of that circuit ,
TR1 and TR2 are of type 2N2219 (npn) , and TR3 is of 2N3553 (npn) type.Wow!!
These types of transistor , I think , are very scarce or rare!! I couldn't buy these
models anywhere in my nation , Myanmar. This is one of two of major problems
I encounter!
So , I have to replace them with another transistor types. Therefore , what would
be the suitable substitutions for them? Be sure ,my friends , transistor types you
suggest are currently in use. I mean they must be available.
The next "big problem" that comes to me is that this circuitry uses RFC ( VK200 RFC tsok ).To say frankly ,my friends , I only know that RFC stands for "radio frequency choke" and I've never seen such a component!! How bad I am!? So where can I get these coils (RFC)? And could these "chokes" (RFC) be found in old circuits? Please, kindly give your helpful hands to me , my friends.Hey. dears! there is no "online store" available in my country!! So, I could not reach up to any "online stores." ( I mean "buying in online stores" is not available in my country , Myanmar.)
Dear my friends ,
I sincerely write the following lines with the words from my heart in a glimmering hope of " if someone of you reads these lines and be eager to help me."
The electronic components I list below (and also in the attachment) are not available in my country. But I desperately need them for my transmitter project.(Please , do not say ,my friends ,not to construct this project.One's hobby makes one crazy!!) Althrough I could be able to afford to buy them if they were available in my country, but they , indeed , aren't!!
Therefore , I would like to ask for help to someone of you who feels compassion on my writings. Dear, my friends , would you mind sending me a packing of these components listed below as soon as possible?
I really know that "Money is difficult to get." But I'm certainly sure I'm going to pay back the money to you who would send the packing to me , one day in the near future , say , when I have access to the online banking system.I think this is not too long to wait.
The address to which you have to send "the packing" is written in the attachment . You , my friend , just "print" that attachment and stamp it onto the packing addressed to me.( The lower part is written in my native language (Burmese) in order to make "sending the packing in my country " easy and sure there isn't liable to something bad. The address is fully completed.
( The List of components I desperately require are as follow
RFC (VK200 RFC tsok) = 5 or little more
2N2219 (npn) (Transistor)= 2
2N3553 (npn) (Transistor)= 2
LY89 (Phillips) (Transistor)= 1
Oh , my thread is a little long!! So , this is my sole and seeming , the last hope and only way to accomplish my transmitter project , really.
Thanks and waiting your replies,
Attachments
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