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[[Category:Radio]]
[[File:Sieve.png]]

''filtri rf modulari''

Tipo QRP:
* dimensioni: 40x15x15 mm
* passo connettore: 4x14 pin 2,54
* potenza max: 25W

Tipo normale:
* dimensioni: 55x20x20 mm
* passo connettore: 4x20 pin 2,54
* potenza max: 50W


Nuclei:

{|style="color:red; background-color:#eeeeee;" cellpadding="10" cellspacing="0" border="1"
||Nucleo||AL
|-
||T37-2||AL=4
|-
||T50-2||AL=4.9
|-
||T68-2||AL=5.7
|-
||T37-6||AL=3
|-
||T50-6||AL=4
|}


<code>
uH=(AL*(spire^2))/1000

spire=sqrt((uH*1000)/AL)
</code>

== Passa Basso ==

CWAZ-style LPF (pF/uH):

{|style="color:blue; background-color:#eeeeee;" cellpadding="10" cellspacing="0" border="1"
||Freq||C1/C7||L2/L6||C3/C5||L4/C4
|-
||1000||2986||9,377||4556||8,516/680
|-
||1500||1990||6,25||3037||5,44/453
|-
||500||5972||18,754||9112||17/1360
|}

SVC Chebyshev LPF:

{|style="color:blue; background-color:#eeeeee;" cellpadding="10" cellspacing="0" border="1"
||Freq||C1/C7||L2/L6||C3/C5||L4
|-
||1000||1476||8||3960||10,1
|-
||500||2592||16||7920||20,2
|-
||1800||820||4,442||2200||5,608
|-
||1500||984||5,33||2640||6,73
|}

rif: 
* http://toroids.info/T50-2.php
* http://www.gqrp.com/Datasheet_W3NQN.pdf (CWAZ)
* http://www.gqrp.com/harmonic_filters.pdf (normale LPF)
* http://www.amidoncorp.com/product_images/specifications/1-03.pdf

== Passa Banda ==

[[File:Bpf-6p.gif]]

{|style="color:blue; background-color:#eeeeee;" cellpadding="10" cellspacing="0" border="1"
||Freq||Tipo||Zin||Zout ||C1/C3||L1/L3||C2||L2
|-
||1,8-4mhz|| || || ||150pf||23uH||330||10,7uH
|-
||4-8mhz|| || || ||100pf||8uH||390||2,1uH
|-
||8-16mhz|| || || ||47pf||4uH||180||1,1uH
|-
||16-30mhz|| || || ||27pf||2uH||100||0,53uH
|-
||115 - 495khz||Butterworth||50||50||8377 pF||53.12 uH||10624 pF||41.88 uH
|-
||0,5 - 1,6mhz||Butterworth||50||50||2894 pF||7.94 uH||1588 pF||14.47 uH
|-
||4 - 10mhz||Butterworth||50||50||530.52 pF||0.9744 uH (18T@T37-6)||194.88 pF||2.65 uH (30T@T37-6)
|-
||6,5 - 15mhz||Butterworth||50||50||374.48 pF||0.6938 uH||138.75 pF||1.87 uH
|-
||10 - 20mhz||Butterworth||50||50||318.31 pF||0.3537 uH (11T@T37-6)||70.74 pF||1.59 uH (23.0T@T37-6)
|}


rif:
* http://www.wb5rvz.com/sdr/hf_bpf/Softrock_PlugIn_HF-BPF_Option_1_Schematic1_12_2009.pdf
* http://www.wa4dsy.net/filter/filterdesign.html