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Lower output from 10W

I'm looking for an easy way to drop output power for QRPp and BPSK modes. Without going into the software drive setting is there an easy page or additional hardware ad on to make it easy ?

John
NQ3RP
by NQ3RP
10 Oct 2018 14:16
 
Forum: Juma Discussion
Topic: Lower output from 10W
Replies: 3
Views: 6487

Re: Juma Kits (general)

ED -
What did he charge for the uProcessor ?
John
NQ3RP
by NQ3RP
24 Sep 2018 21:33
 
Forum: Juma Discussion
Topic: Juma Kits (general)
Replies: 2
Views: 5426

Re: Juma TRX2A and DSP

Adrian - I will look at your firmware and thanks for the tips about the voice memory connection description. I've run into the problem with limited button / function problem in many hardware interface routines before. I see that each button is used in several ways but there is no combination of butt...
by NQ3RP
16 Dec 2017 12:54
 
Forum: Juma Discussion
Topic: Juma TRX2A and DSP
Replies: 5
Views: 8290

Re: Juma TRX2A and DSP

Adrian - I agree with the changes that would have to be made, also the A/D would have to be changed, etc. But I think it would be easy to do with another board containing an A/D, D/A and a STM processor doing the Fourier transform. Would need to changed the clock speed to 7.5Mhz in that case, the 16...
by NQ3RP
15 Dec 2017 14:16
 
Forum: Juma Discussion
Topic: Juma TRX2A and DSP
Replies: 5
Views: 8290

Juma TRX2A and DSP

I read in the manual > "DsPIC30F6014A is also clocked with this reference oscillator. The current software version operates with a 30MHz clock. The 30MHz frequency is connected to the micro controller via 0R jumper R54. For future use there is the possibility to install a flip flop IC6 and get ...
by NQ3RP
13 Dec 2017 20:39
 
Forum: Juma Discussion
Topic: Juma TRX2A and DSP
Replies: 5
Views: 8290
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