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Re: TRX2 Main Board Voltage?

Jussi,

Olen valitettavasti kovin kiireinen ja sinun ongelman ratkaiseminen forumin avulla on hidasta.

Ehdotan, että otat yhteyttä Juma Community hamsseihin. He auttavat sinua.
Tarvittaessa voit antaa TRX2:n korjattavaksi.
Tässä linkki www.jumaradio.com/juma/juma-community.html

73 Matti OH7SV
by OH7SV
23 Mar 2012 17:51
 
Forum: Juma Discussion
Topic: TRX2 Main Board Voltage?
Replies: 2
Views: 5610

Re: Juma TRX2 - Magnetic loop.

Congratulations Kurt :D

Have you got any pictures of your bicycle wheel magnetic loop?
See my 3.5MHz loop here www.saunalahti.fi/hohtola/ham/magnetic- ... or-80m.htm

73 Matti OH7SV
by OH7SV
29 Feb 2012 13:46
 
Forum: Juma Discussion
Topic: Juma TRX2 - Magnetic loop.
Replies: 2
Views: 8292

Re: Juma TRX2A - Voltage supply problem in Main Board

Saku,

It seems you are circling around with the problem.
Please contact one of the Juma comminity hams to repair your TRX2A.
www.jumaradio.com/juma/juma-community.html

73 Matti OH7SV
by OH7SV
27 Feb 2012 06:31
 
Forum: Juma Discussion
Topic: Juma TRX2A - Voltage supply problem in Main Board
Replies: 17
Views: 27196

WRC-12 allocated 472-479 kHz to the amateur radio

Good news! On February 14, 2012, the delegates at World Radiocommunication Conference (WRC-12) formally approved allocating 472-479 kHz to the amateur radio service ; however, this new allocation will not take effect until it is entered into the ITU's Radio Regulations. Following that, individual re...
by OH7SV
15 Feb 2012 03:37
 
Forum: Juma Discussion
Topic: WRC-12 allocated 472-479 kHz to the amateur radio
Replies: 0
Views: 4087

Re: Does anyone know PIERRE EFKHANIAN ??

Heikki,

I think Pierre's call sign is F4DOE
I found this page http://hamcall.net/call/F4DOE
It needs registration to get more information.

73 Matti OH7SV
by OH7SV
05 Feb 2012 19:47
 
Forum: Juma Discussion
Topic: Does anyone know PIERRE EFKHANIAN ??
Replies: 1
Views: 5093

Re: TRX2 Spur Elimination Option

John,

Spur Elimination Option (JUMA TRX2 SE Option) has been added to Juma online shop www.nikkemedia.fi/juma/online-shop
See information of JUMA TRX2 SE Option www.nikkemedia.fi/juma-trx2/rev-b/juma- ... uction.pdf

73 Matti OH7SV
by OH7SV
24 Jan 2012 12:04
 
Forum: Juma Discussion
Topic: TRX2 Spur Elimination Option
Replies: 1
Views: 13123

Re: Flex1500 & PA100D auto band select

That's right Jari, JUMA PA100D model has a frequency sense function as an auto band selection alternative. PA100D detects the band from the RF signal coming from an exciter. The frequency sensing mode is set in CONFIG pages http://www.nikkemedia.fi/juma-pa100/pa100-buttons-description.html Other PA1...
by OH7SV
22 Jan 2012 18:47
 
Forum: Juma Discussion
Topic: PA100 and Flex 1500
Replies: 3
Views: 7648

Re: JUMA PA1000 Linear Amplifier

David,

Thanks for good comments.
I have noticed the Murata SMPS. They look good but are too big (long) in size to integrate in the enclosure.
Christi's resonant looks attractive. I might contact him for a custom model.

73 Matti OH7SV
by OH7SV
16 Jan 2012 11:04
 
Forum: Juma Discussion
Topic: JUMA PA1000 Linear Amplifier
Replies: 50
Views: 197484

Re: Juma TRX2 Firmware, Version 1.07u Build 12

Robert, The TRX2 firmware developed by Adrian can be found in TRX2 Technical kit information page http://www.nikkemedia.fi/juma-trx2/rev-b Down there is a link "User HW and SW modifications" http://www.nikkemedia.fi/juma-trx2/rev-b/JUMA-TRX2-user-modifications.html Open the firmware zip fi...
by OH7SV
11 Jan 2012 06:35
 
Forum: Juma Firmware by 5B4AIY
Topic: Juma TRX2 Firmware, Version 1.07u Build 12
Replies: 4
Views: 9528

Re: PA100 and Flex 1500

Gord,

5W drive power is enough for JUMA PA100 to get out 100W or even more.
The gain of PA100 can be adjusted by the means of the input attenuator.
This feature is in both models PA100 and PA100-D.

73 Matti OH7SV
by OH7SV
10 Jan 2012 16:19
 
Forum: Juma Discussion
Topic: PA100 and Flex 1500
Replies: 3
Views: 7648
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