10 meter output under 1/8 watt?

General discussion and support for the Peaberry SDR V2.

10 meter output under 1/8 watt?

Postby KD31 » Thu Feb 26, 2015 5:04 am

Is this normal for the V2 to produce under .15 watts on 10 meters? If I txmt on 12 meter it starts to go up but still under .25 watt.
Last edited by KD31 on Wed Mar 18, 2015 7:17 pm, edited 2 times in total.
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Re: 10 meter output under 1/4 watt?

Postby AE9RB » Thu Feb 26, 2015 5:22 am

It might be normal. Depends on the software and mode which you didn't provide. I get 0.7 watts with Peaberry CW.
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Re: 10 meter output under 1/8 watt?

Postby KD31 » Thu Feb 26, 2015 5:33 am

Sorry, using HDSDR I have tried it in AM, SSB and FM and with 12 volts and 13.8 volts and all still under .25 watts. I do feel the heat sink getting a little warm. I was just looking at the K5BCQ 20w HF amp kit. I wonder if the output from the Peaberry will be enough to key this amp?

http://www.qsl.net/k5bcq/Kits/Kits.html
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Re: 10 meter output under 1/4 watt?

Postby uv199 » Thu Feb 26, 2015 9:00 pm

The website for that k5bcq amp mentions it will work on very low power input of under 50mw. I use that amp with both of my Peaberry's . The amp senses the rf from the Peaberry and triggers. I consistently get between 15 and 20 watts output. The Peaberry's I use it with are 160m, 80m, 75M and the other one is built for 60m, 40m, 30m, 20m bands. Kees , the designer, is a good guy to work with. He has answered all of my questions.
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Re: 10 meter output under 1/4 watt?

Postby KD31 » Thu Feb 26, 2015 10:55 pm

Thanks. I emailed him but he doesn't have any kits available right now so I guess he put me on "the list". How does this amp work on SSB?
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Re: 10 meter output under 1/4 watt?

Postby AE9RB » Fri Feb 27, 2015 7:23 am

The new Peaberry CW application is now the best way to troubleshoot low power output. It will automatically fix, ask you to fix, or bypass any bad settings in the operating system. This eliminates a big pile of potential problems.
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Re: 10 meter output under 1/4 watt?

Postby uv199 » Fri Feb 27, 2015 10:09 pm

It works great on SSB. Also, there are 2 sets of stacking pins in the board that you can set with jumpers. One set is used to select between Phone or CW use and the other set is used to select either PTT or Signal generated trigger. I substituted the jumper with small toggle switches for both so they can be switched at will. I put the amp in a small project box. I run mostly SSB and digital modes and the Peaberry output triggers the amplifier automatically. It has been flawless in operation. It's an easy kit to build and does a great job inexpensively.
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Re: 10 meter output under 1/4 watt?

Postby KD31 » Mon Mar 02, 2015 6:22 pm

Thanks. I am waiting for K5BCQ to be available. I will also checkout the CW application.
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Re: 10 meter output under 1/8 watt?

Postby KD31 » Wed Mar 18, 2015 7:16 pm

UPDATE.
I read somewhere on this forum to check the output power in FM mode due to a limitation in HDSDR? When I did, I found something that doesn't seem right as you can see in the screenshot. The AF window goes crazy in FM mode until I click TX then it works normal. Is there something wrong in my filter section of the radio? Before all this, I recently replaced the BS170's as I found one that would not turn on. Then, After that I found a physically broken .01uf capacitor on the bottom of the board. Not sure which one it is because its not labeled but It's in the area under U14 or U6. The power output on the radio is still very low. I also built the M0ZRF 15-20w amplifier with the 10 meter LPF and the radio will only drive it to about 9 watts. Anyone else on here with a 10m build?
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