Ham Radio Homebrew Informations: Re: [HamBrewers] 73 watts okay but.........

Wednesday, May 11, 2011

Re: [HamBrewers] 73 watts okay but.........

Dear Ron,

Yes, you are absolutely wonderful!

Thanks and shall (as usual) request morning qth guies to get me from Farnell/RS.

Thanks all others also , highly appreciated for your time and interest to look in to my mails!

dev

From: ranajay mallik <rmallik74@yahoo.com>
To: HamBrewers@yahoogroups.com
Sent: Thu, May 12, 2011 9:06:35 AM
Subject: Re: [HamBrewers] 73 watts okay but.........

Dear Dev,

because the quality and reliability of local HV parts can be dubious especially for QRO applications, I always buy standard HV parts from element14 (ex-farnell). It is possible to pay in INR via "kits and spares". Please see the link and try for other values as well. they are all there.

http://in.element14.com/jsp/search/browse.jsp?N=500003+1000039+5116511+5225553+5225645+5101694+5242383&Ntk=gensearch_001&Ntt=47pF&Ntx=mode+matchallpartial&No=0&getResults=true&appliedparametrics=true&locale=en_IN&catalogId=&prevNValues=500003+1000039+5116511+5225553+5225645&filtersHidden=false&appliedHidden=false&originalQueryURL=%2Fjsp%2Fsearch%2Fbrowse.jsp%3FN%3D500003%2B1000039%26Ntk%3Dgensearch_001%26Ntt%3D47pF%26Ntx%3Dmode%2Bmatchallpartial%26No%3D0%26getResults%3Dtrue%26appliedparametrics%3Dtrue%26locale%3Den_IN%26catalogId%3D%26prevNValues%3D500003%2B1000039

Best regards,

VU2ORO

Ron

Indirapuram, NCR

--- On Wed, 5/11/11, Dev Ramaprabhu <vu2dev@yahoo.com> wrote:

From: Dev Ramaprabhu <vu2dev@yahoo.com>
Subject: [HamBrewers] 73 watts okay but.........
To: HamBrewers@yahoogroups.com
Cc: vuhams@yahoogroups.com
Date: Wednesday, May 11, 2011, 6:33 AM

Dear All,

As you might have seen the pics in the previous mail we have managed to combine two PAs and get almost 100watts but.......

100 watts on dummy load is 100volts peak and alas all our Capacitors are rated for 100Volts only so obviously we got to run at 73watts or below for safety!( on real ANTENNAS, not NOT DUMMYS)

Now, dear all could you suggest some vendors/ shops/ types for Capacitors which would work let us say at 200 volts or more so that we could run a lil more output; somewhat like 400w d.c.input (I am afraid that's all we are allowed to run in our beloved India shining!) And just for info I am using a Wilkinson Combiner to get more output ( and run those Mosfets very Cool!!!!!) We would need the following values:

47pF,

100pF,

300pF/320pF,

470pF!

Of course any one wants I could send the full schematic etc and the photo ( I Can't send as I need some youngster to convert from Camera to PC, hi hi hi hi)

All the best and Do run full Legal limit!

( Not exactly anti-QRP but pls do experiment)

dev, vnk, pwt