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#1




75 to 50 ohm minimum loss pad
Hi
can't find the notes for a minimum loss pad, anybody who remember the values? It should be easy to calculate, but I am not in the mood for doing so at the moment 73 JanMartin, LA8AK  J. M. Noeding, LA8AK, N4623 Kristiansand http://home.online.no/~la8ak/c.htm 
#2




J M Noeding wrote:
Hi can't find the notes for a minimum loss pad, anybody who remember the values? It should be easy to calculate, but I am not in the mood for doing so at the moment Here. Hot out of the math package. Assuming I know what I'm talking about it's an L with series 43.3 & shunt 86.6 (theoretical). Should be 6dB of attenuation.  Tim Wescott Wescott Design Services http://www.wescottdesign.com 
#3




J M Noeding wrote:
Hi can't find the notes for a minimum loss pad, anybody who remember the values? It should be easy to calculate, but I am not in the mood for doing so at the moment 73 JanMartin, LA8AK  J. M. Noeding, LA8AK, N4623 Kristiansand http://home.online.no/~la8ak/c.htm Series resistor on 75 ohm side is 43.3 ohms. Parallel resistor on 50 ohm side is 86.6 ohms.  John Popelish 
#4




can't find the notes for a minimum loss pad, anybody who remember the
values? It should be easy to calculate, but I am not in the mood for doing so at the moment http://www.maximic.com/appnotes.cfm/appnote_number/972 Their calcs yield a design with R1 (in series with the 75ohm source) being 43.3 ohms, and R2 (in shunt with the 50ohm load) being 86.6 ohms.  Dave Platt AE6EO Hosting the Jade Warrior home page: http://www.radagast.org/jadewarrior I do _not_ wish to receive unsolicited commercial email, and I will boycott any company which has the gall to send me such ads! 
#5




On Wed, 02 Feb 2005 00:19:28 0000, (Dave Platt)
wrote: can't find the notes for a minimum loss pad, anybody who remember the values? It should be easy to calculate, but I am not in the mood for doing so at the moment http://www.maximic.com/appnotes.cfm/appnote_number/972 Their calcs yield a design with R1 (in series with the 75ohm source) being 43.3 ohms, and R2 (in shunt with the 50ohm load) being 86.6 ohms. thanks to all, I almost remembered it an hour after asking 73, JanMartin  J. M. Noeding, LA8AK, N4623 Kristiansand http://home.online.no/~la8ak/c.htm 
#6




Use program PADMATCH for T, Pi, L and minimum loss pads between any pair of
terminating resistances.  .................................................. .......... Regards from Reg, G4FGQ For Free Radio Design Software go to http://www.btinternet.com/~g4fgq.regp .................................................. .......... 
#7




Tim Wescott wrote:
J M Noeding wrote: Hi can't find the notes for a minimum loss pad, anybody who remember the values? It should be easy to calculate, but I am not in the mood for doing so at the moment Here. Hot out of the math package. Assuming I know what I'm talking about it's an L with series 43.3 & shunt 86.6 (theoretical). Should be 6dB of attenuation. Faint bells ring... 43 ohms is a standard value, and 86.6 is pretty close to 100 paralleled by 680. For testing 75ohm TVI filters in a 50ohm system, it's very handy to make up a pair of those pads as interseries adaptors.  73 from Ian G3SEK 'In Practice' columnist for RadCom (RSGB) http://www.ifwtech.co.uk/g3sek 
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