[Moon-Net] RF FET selection for 432 MHZ SSPA

Ed K9EK e.krome at comcast.net
Wed Nov 30 18:34:05 CET 2016

Look at "w6pql.com" or "rfham.com", (although something may be wrong with the latter; my anti-virus says it is compromised). These 432 pallet amplifiers (for 50, 144 1nd 432 MHz) use the MRFE6VP5600H dual LDMOS transistor. On 432, 4W in gets 500W out. Run on 48VDC. Fairly easy to build and very tough and reliable. I've built all 3; 50 MHz gets 600W out with 1W in, 144 MHz gets 500W out for 1W in (this is the easiest version to build). Awesome stuff. I've written several papers on them if you would like to see them. There are also 1+KW versions. These were first shown in DUBUS 4/2012. 
Ed K9EK 

----- Original Message -----

From: "Rick Muller" <rick.muller at asml.com> 
To: "moon-net" <moon-net at mailman.pe1itr.com> 
Sent: Wednesday, November 30, 2016 11:58:29 AM 
Subject: [Moon-Net] RF FET selection for 432 MHZ SSPA 

Busy here building a SSPA for 432 Mhz 
Currently using a MRF 186 .. with 8 watt RF in I get about 90 Watt out .. using 26 Volt supply 
I could replace the MRF 186 with another RF FET , my power suppl y can deliver up to 48 Volt with 25 Amp and the heat sink is big . 
I am not an “ advanced “ RF builder so I do not know which FET to select .. there are new ones on the market every week .. 
But changing the FET could also mean changing the design .. what kind of parameters are critical if you replace one type FE T with the other ?? 
73’s Rick, PA1BVM 
-- The information contained in this communication and any attachments is confidential and may be privileged, and is for the sole use of the intended recipient(s). Any unauthorized review, use, disclosure or distribution is prohibited. Unless explicitly stated otherwise in the body of this communication or the attachment thereto (if any), the information is provided on an AS-IS basis without any express or implied warranties or liabilities. To the extent you are relying on this information, you are doing so at your own risk. If you are not the intended recipient, please notify the sender immediately by replying to this message and destroy all copies of this message and any attachments. The sender nor the company/group of companies he or she represents shall be liable for the proper and complete transmission of the information contained in this communication, or for any delay in its receipt. 
Moon-Net posting and subscription instructions are at http://www.nlsa.com/nets/moon-net-help.html 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://mailman.pe1itr.com/pipermail/moon-net/attachments/20161130/5fe5a5ba/attachment-0001.html 

More information about the Moon-net mailing list