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TOPIC: SunDR2 Pro -- a few more watts to drive PAs

SunDR2 Pro -- a few more watts to drive PAs 06 Mar 2021 21:07 #1

  • ea3in
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Hello

I am very happ with my SunSDR2PRO, but I woyukld like to get something to go up to 30-40 Watts, in order to drive my linear amps (KPA500 and ACOM2000)
Any idea or suggestion?

Probably the answer is to move to a Sunsdr DX, but I would like to explore how to keep the SunSDRPRO2

73 de Marcel
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SunDR2 Pro -- a few more watts to drive PAs 06 Mar 2021 21:14 #2

  • N8SDR
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You could mode the KPA 500 for lower drive i suppose?
or use a small SS amp to drive to other amps-

perhaps it would be lees expensive in long run to use a low drive SS amp something like Russian EB104 series 500 watt or 1.2KW ( he will modify them to take lower drive to produce rated output)
73 Rick
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SunDR2 Pro -- a few more watts to drive PAs 09 Mar 2021 02:33 #3

  • VK6NX
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Home brew EB104 - 5W IN enough to get 600W-1KW OUT.
5-10-16dB "in ATT" is needed while using 20-40-70W IN.
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SunDR2 Pro -- a few more watts to drive PAs 20 Oct 2021 19:30 #4

  • k5rhd
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Build your own! I am thinking of getting one of these: www.hobbypcb.com/index.php/products/hf-radio/hardrock-500-power-amplifier-support-package

Spendy, but I will get to learn about how solid state amps work. I am going to get the ATU as well if I do it at all.

73
K5RHD
/randy
73
K5RHD
/randy
Arvada, CO USA
DM79
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SunDR2 Pro -- a few more watts to drive PAs 20 Oct 2021 19:49 #5

  • DL3NCI
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Hi,
check out a JUMA 1000 PA. I had one, sold it and have ordered another one. It is small, light weight and well built.
www.jumaradio.com/juma-pa1000/
BTW: I get NO provision
I have a Expert 1k5 and use a SunSDR2DX, the JUMA was controlled by my sunsdr qrp, 5w are sufficient.
73
Marcus DL3NCI
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