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
Qrp Am transmitter idea with schematic
Moderators: Sir Nigel, Nina, pcs, 5r, phpBB2 - Administrators
-
- New registered user
- Posts: 4
- Joined: Sun Nov 30, 2003 8:57 pm
-
- New registered user
- Posts: 4
- Joined: Sun Nov 30, 2003 8:57 pm
-
- New registered user
- Posts: 4
- Joined: Sun Nov 30, 2003 8:57 pm
hi
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
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