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Qrp Am transmitter idea with schematic
Posted: Sun Nov 30, 2003 9:01 pm
by daretodream
Hi all,
Great site!!!
I have come up with a low power am tx.Maximum modulation is 85%.Should be ok for a small town or village.
Schematics will be posted soon.
Very Best Regards from joy
Re: JOY TO THE WORLD
Posted: Mon Dec 01, 2003 2:11 am
by daretodream
Please take a look at -
http://www.geocities.com/amtx2003
What do you think?
YS,
joy
Posted: Mon Dec 01, 2003 9:32 am
by R_QRP
Why not try this one for SW AM QRP:
"Spam not allowed"
What do you think now?
73s de R_QRP
hi
Posted: Mon Dec 01, 2003 6:11 pm
by daretodream
Hello Radio Qrp,
Yes seen those schematics.Great site of yours!
I made poppet part15 transmitter.It uses solid state modulation but distortion figures were high.So a voltage follower was added which could suppy more current without loading the lm386 chip.Now one could have 2 watts output on peaks.
Last year I got frustuated trying various modulation transformers hehe that's why I now prefer solidstate modulator.
Very best regards from joy
R_QRP wrote:Why not try this one for SW AM QRP:
"Spam not allowed"
What do you think now?
73s de R_QRP