MeoW: Difference between revisions
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Induttanze in materiale 2: | Induttanze in materiale 2: | ||
* T50-2 AL=4.9 | |||
* T68-2 AL=5.7 | |||
uH=(AL*(Giri^2))/1000 | uH=(AL*(Giri^2))/1000 | ||
| Line 52: | Line 52: | ||
||500||5972||18,754||9112||17/1360||9112||18,754||5972 | ||500||5972||18,754||9112||17/1360||9112||18,754||5972 | ||
|} | |} | ||
rif: | |||
* http://toroids.info/T50-2.php | |||
== Pretrattamento audio == | == Pretrattamento audio == | ||
Revision as of 23:14, 12 March 2017
Transmettitore ad onde medie
Specifiche
- prezzo <= 50 euro
- potenza >= 50 W
- senza assemblaggi SMD
Sezioni
Scheda madre
- Filtraggio alimentazione
Pretrattamento audio
- equalizzazione
- led overdrive
uC controllo
DDS
- http://www.ebay.it/itm/AD9850-Module-DDS-Signal-Generator-Module-0-40-MHz-2-Sine-Square-Wave-Output/121813761678
- https://www.aliexpress.com/item/New-AD9850-DDS-Signal-Generator-Module-0-40MHz-Test-Equipment/32328648512.html che espone il piedino 12 (Rset)
controllato da Ondeggiatore
PA
- in kit https://www.aliexpress.com/item/New-45W-SSB-linear-Power-Amplifier-Kits-With-low-pass-filter-for-transceiver-Radio-HF-FM/32574683152.html - 45W, 12-15v
LPF
Induttanze in materiale 2:
- T50-2 AL=4.9
- T68-2 AL=5.7
uH=(AL*(Giri^2))/1000
Giri=sqrt((uH*1000)/AL)
| Freq | C1 | L2 | C3 | L4/C4 | C5 | L6 | C7 |
| 1000 | 2986 | 9,377 | 4556 | 8,516/680 | 4556 | 9,377 | 2986 |
| 1500 | 1990 | 6,25 | 3037 | 5,44/453 | 3037 | 6,25 | 1990 |
| 500 | 5972 | 18,754 | 9112 | 17/1360 | 9112 | 18,754 | 5972 |
rif:
Pretrattamento audio
letture