Amps revisited

General discussion and support for the Peaberry SDR V2.

Amps revisited

Postby donde » Sat Feb 21, 2015 5:05 am

I'm a newcomer to this forum. Just registered. I've almost decided to purchase the Peaberry V2 Kit. I have built a number of Softrock rigs.
So I think I could build this one. I sure like the idea of no sound card card needed. And like most, a small amplifier becomes the next step.
I see many amplifier topics here. For 2015, what is the popular circuit? I know this is a loaded question, but I'm asking anyway. Or maybe AE9RB is
coming out with one!
Thanks,
Don
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Re: Amps revisited

Postby W4MMP » Sat Feb 21, 2015 5:08 am

Don,
One of the most popular amps is the Hardrock 50 (http://www.hobbypcb.com/amateur-radio/a ... p-kit.html). I have seen nothing but good reviews of the amp. I can not speak from personal experience, but there a number of folks on this forum that own them.

P.S. I also started out with the Softrock and decided to switch to the Peaberry early on. No regrets. Take your time building the rig. It is definitely NOT a one night project.
73
Ron / W4MMP
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Re: Amps revisited

Postby AE9RB » Sat Feb 21, 2015 6:23 am

Any amp not "CW only" that includes low-pass filters for the second harmonics should work. HR-50 and HF Packer are popular choices if you want to build it yourself. There's a ton of single-band stuff out there. There's even folks using vacuum tubes to amplify their Peaberry. Amps is amps so long as your IMD and spurious emissions are good.
73 David AE9RB
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Re: Amps revisited

Postby donde » Sat Feb 21, 2015 2:37 pm

Thanks Ron and David,

I always took my time with Softrock. For me, building it fast looses the essence of building a kit in the first place. OK on the amps. Tubes! My first CW adventure was at 13. A single 6AG7 with socket spread between 2 sticks of wood. A few more sticks and it was a "chassis"! 8 watts out on 40 meters. Worked the Bay Area ... WOW he heard me! 350 miles! I built it all myself!

Don ... W6RWN
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Re: Amps revisited

Postby N2TOH » Mon Mar 02, 2015 3:51 am

I've started to ponder employing power over Ethernet as a means to supply power to an RF amplifier. with the latest generations of 802.3at and the like able to carry as much as 57VDC @ 1AMP on CAT5 cable over a maximum of 100 meters.
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