Re: JUMA PA1000 Linear Amplifier
Posted: 01 Apr 2012 06:59
Hello David and all
I have been making these modules for 8 month now and selling them either through eBay or on
direct trade basis.
I also make a lower power versions2x450W devices and 2x600W devices.
I also implanted feedback on them and got good results and better match. also good IMD results
The use of TLT had enabled me to get better results and superior band width as opposed to the regular tube and sleeve transformer.
as for marketing my boards please contact me direct with: 4z4rb@bezeqint.net
mail
I am also on 20 in the evenings around 14180 usb.
A9:1 transformer is a bit trickto understand but is very easy to make and use
a semi rigid or a regular 25 ohm coax can be used depending on power ratings
On this paticular board I used the semi rigid because Mr Duda wanted it but no big difference at 1kw level with regular Raychem coax was observed.
These devices represent a great step in RF linear rf power amp design.
best regards and 73's
Baruch 4z4rb
I have been making these modules for 8 month now and selling them either through eBay or on
direct trade basis.
I also make a lower power versions2x450W devices and 2x600W devices.
I also implanted feedback on them and got good results and better match. also good IMD results
The use of TLT had enabled me to get better results and superior band width as opposed to the regular tube and sleeve transformer.
as for marketing my boards please contact me direct with: 4z4rb@bezeqint.net
I am also on 20 in the evenings around 14180 usb.
A9:1 transformer is a bit trickto understand but is very easy to make and use
a semi rigid or a regular 25 ohm coax can be used depending on power ratings
On this paticular board I used the semi rigid because Mr Duda wanted it but no big difference at 1kw level with regular Raychem coax was observed.
These devices represent a great step in RF linear rf power amp design.
best regards and 73's
Baruch 4z4rb