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Re: JUMA PA1000 Linear Amplifier

HI

Yes, we are reading. Very nice amplifier, thank you for posting your experience. Now, the question is more a bout the support of this amp over the long term ?

73, Laurent
by F6DEX
15 Jul 2016 14:08
 
Forum: Juma Discussion
Topic: JUMA PA1000 Linear Amplifier
Replies: 50
Views: 97870

Re: QSK in PA1000

Petr

I don't know exactly but I doubt there is a true QSK in the PA1000. At best, a fast T/R delay.

73, Laurent
by F6DEX
12 Jan 2016 18:57
 
Forum: Juma Discussion
Topic: QSK in PA1000
Replies: 2
Views: 3513

Re: Juma TRX2A Info Needed Before Purchasing

Matti EXCELLENT !... I studied the problem myself because I thought that a slight change in the value of the components of the active fillter could reduce the bandwith. This is not an issue of the rig just a design choice. I see on you image that the change is more complex. I hope it is usable with ...
by F6DEX
20 Dec 2015 17:38
 
Forum: Juma Discussion
Topic: Juma TRX2A Info Needed Before Purchasing
Replies: 6
Views: 4098

Re: Juma TRX2A Info Needed Before Purchasing

Frank I do have a TRX2A (without the Spur option because installation is critical) and yes, there is birdies but they are not annoying because they disappear very quickly. Now the new main board of the TRX2A includes the Spur reduction. Sensitivity is also good enough on 10m (I also have a K3), no p...
by F6DEX
19 Dec 2015 18:59
 
Forum: Juma Discussion
Topic: Juma TRX2A Info Needed Before Purchasing
Replies: 6
Views: 4098

Re: Juma TRX-2 v1.20c Build 6

Adrian I loaded the firmware 1.2 b6, but when I want to click DISPLAY I get "adress trap"!" and I can not access anything. Reloading the firmware does not help... I can load and save configuration settings I can load but I can't save user settings I am coming from 1.10q Do you have a ...
by F6DEX
30 Jul 2015 18:19
 
Forum: Juma Firmware by 5B4AIY
Topic: Juma TRX-2 v1.20c Build 6
Replies: 2
Views: 2262

Re: New Firmware - Juma TRX-2 & PA-100D

Hello Adrian

Many thanks for this wonderful firmware. Really this firmware for the TRX2 could be named the JUMADRIAN firmware !..

73, Laurent
by F6DEX
30 Apr 2014 17:36
 
Forum: Juma Discussion
Topic: New Firmware - Juma TRX-2 & PA-100D
Replies: 1
Views: 1611

Re: Juma TRX-2 v1.10k

HI Adrian, The build 4 works perfectly. No I don't think changing bands while in Split is important. I see that during computer control, this is permitted and this allows cross-band operation. Cross band is absolutely not useful but I don't think you have to change anything to equalize the VFO in th...
by F6DEX
10 Mar 2014 18:10
 
Forum: Juma Firmware by 5B4AIY
Topic: Juma TRX-2 v1.10k
Replies: 3
Views: 3189

Re: Juma TRX-2 v1.10k

Adrian I sent you a direct message but in case of you don't receive it... With this new firmware, I have an "adress trap" error when I attempt to change the filter bandwidth (using the JUMA protcol). I was obliged to reverse to 1.010h to make it working. Also, the new band switch (with RIT...
by F6DEX
09 Mar 2014 18:20
 
Forum: Juma Firmware by 5B4AIY
Topic: Juma TRX-2 v1.10k
Replies: 3
Views: 3189

Re: what has happened to Juma Kits

I ordered one "out of stock" kit some months ago (VM keyer). Just ask if any...

73, Laurent
by F6DEX
08 Mar 2014 17:29
 
Forum: Juma Discussion
Topic: what has happened to Juma Kits
Replies: 3
Views: 3145

Re: TRX2, align and tune up

Leo, TRX2 is very easy to align but you need at least: - a multimeter and (recommended) an accurate capacimeter for checking and sorting the values of the capacitors before soldering (I use a L/C Meter IIB), - a dummy load and a wattmeter (as usual), - a small and simple RF Generator : and XG2 Elecr...
by F6DEX
13 Apr 2013 09:53
 
Forum: Juma Discussion
Topic: TRX2, align and tune up
Replies: 3
Views: 3862
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