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Re: RX-1 DDS troubles, help appreciated

Now that you have programmed another chip, and the programming was OK, you have eliminated this as a causal factor. As you say, it has to be a fault on the board itself, and my first thought as always, would be to verify that the main oscillator is actually running, is stable , and at the correct fr...
by 5B4AIY
16 Nov 2014 07:41
 
Forum: Juma Discussion
Topic: RX-1 DDS troubles, help appreciated
Replies: 8
Views: 10606

Re: RX-1 DDS troubles, help appreciated

OK, if you can get the use of an oscilloscope, this is what you should look for, and what to expect. The 'scope needs to have a minimum bandwidth of at least 40MHz, preferably 100MHz, and you should use a standard x10 probe to minimise capacitive loading. The very first step is to check that pin 4 o...
by 5B4AIY
15 Oct 2014 06:45
 
Forum: Juma Discussion
Topic: RX-1 DDS troubles, help appreciated
Replies: 8
Views: 10606

Re: RX-1 DDS troubles, help appreciated

Hi, I can only really speak about the TRX-1, but since the RX-1 uses essentially the same logic and circuitry, at least for the receiver section, then there should be commonality. From your description, it would appear that the DDS is not producing any output, or, if it is, then it is random noise r...
by 5B4AIY
14 Oct 2014 07:07
 
Forum: Juma Discussion
Topic: RX-1 DDS troubles, help appreciated
Replies: 8
Views: 10606

Revised Firmware For Juma PA-100D

Please note that there is now a revised firmware for the Juma PA-100D, version 1.05Q Build 2. This fixes a minor bug in the Serial Test Suite A-D Convertor Test display. Full details are on the web page related to my firmware.
73, Adrian, 5B4AIY
by 5B4AIY
10 Oct 2014 06:23
 
Forum: Juma Discussion
Topic: Revised Firmware For Juma PA-100D
Replies: 0
Views: 3586

Juma TRX-2 1.10q Build 7

This version of the firmware, (1.10q Build 7) modifies the way the frequency is displayed in the NEW mode. The various display modes are selected in the User Configuration menu. The transceiver's frequency can be displayed in one of four modes: ORIGINAL This mode displays the frequency to a resoluti...
by 5B4AIY
06 Oct 2014 11:55
 
Forum: Juma Firmware by 5B4AIY
Topic: Juma TRX-2 1.10q Build 7
Replies: 0
Views: 3842

Juma TRX-2 Firmware v1.10p Build 8

Who says software is ever finished? This revision of the TRX-2 firmware improves the way the selective VFO Memory Lock function operates. The VFOs of the TRX-2 can operate in one of two modes, the default used by most people, A/B+Split Mode, and the Multi-VFO/Memory Mode. In the A/B+Split mode there...
by 5B4AIY
30 Jul 2014 06:54
 
Forum: Juma Firmware by 5B4AIY
Topic: Juma TRX-2 Firmware v1.10p Build 8
Replies: 1
Views: 4358

Re: New Firmware For TRX-1

Hi, Petr, No, when I am talking about operating on 60m, I am specifically referring to the TRX-1 - it is perfectly possible. I was referring to the new firmware I wrote for the TRX-1 which incorporates out-of-band detection. You would need to set this option to OFF in the Setup & Calibration men...
by 5B4AIY
28 Jul 2014 12:44
 
Forum: Juma Discussion
Topic: New Firmware For TRX-1
Replies: 5
Views: 7134

Re: New Firmware For TRX-1

Hi, Petr, I'm happy that you like the new firmware for the TRX-1, it's always nice to have some feedback. Unfortunately there will not be any further updates. It is not possible to include the 60m band in the Rapid Band Switch feature for a number of reasons: 1. There are a number of differing licen...
by 5B4AIY
27 Jul 2014 09:26
 
Forum: Juma Discussion
Topic: New Firmware For TRX-1
Replies: 5
Views: 7134

Re: PA100D / TRX2 and UCXLog + PA100D

Hi, Erich, Happy to be of assistance. Glad you like the new firmware, it's always nice to receive some thanks. Yes, the serial cable for the PA-100D needs to the be the reverse of the TRX-2. Inside the PA-100D on the Frequency Sense board are two jumpers. If you set them to the programming mode, the...
by 5B4AIY
09 Jul 2014 14:20
 
Forum: Juma Discussion
Topic: PA100D / TRX2 and UCXLog + PA100D
Replies: 8
Views: 10611

Re: PA100D / TRX2 and UCXLog + PA100D

Hi, Erich, I have prepared a set of instructions which I have uploaded here that describe how to install and setup the Ingenia loader to run under Windows XP, Windows Vista, and Windows 7. I have tested it under all of these operating systems and if you follow the installation instructions it works ...
by 5B4AIY
07 Jul 2014 05:22
 
Forum: Juma Discussion
Topic: PA100D / TRX2 and UCXLog + PA100D
Replies: 8
Views: 10611
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