JUMA Amateur Radio Forum

In my new built JUMA TX 500 I run into Problem. The RX Converter can be switch on / off. But when I try to activate Pre- Amplifier Gain it switches directly to 20dB, because Hi- level coming from Controller as switched to 10db or 20 dB Gain. Thats definitly wrong. The Signal is comming from Pin 35 ...

Hi,
just finished a TX 500 - but - no Power Output.
I seems to be, that the Signal "Buffer" is not generated which ist op Voltage for Buffer

Question: What is generating the +5 Voltage "Buffer" ? (Software)

73 uwe

... out from the documentaion is the query protocoll activated from the config page.

Question: how do I come into it ? Please explain !

73
Uwe

In Order to programm the JUMA TX 500 ( Also TX 136) a Terminal programm is needed
Programming EEPROM
Dont have my old W98 anymore

What Terminal - Programm would work with XP or W7

I am not talking about the JUMA TX136 & TX500 control software !


73
Uwe

This failure is caused by overcurrent.
(IC7 MAX 4373TESA) is generating FAULT. After removing Overcurrent it should generate Overcurrent RESET/not
(in my case it did not)

73
Uwe, DK1KQ

The Reason for this big difference : Cable J2-not good fabricated - therfore No data from PIC to DDS
small correction can be done in Service mode (PWR+Display (Set Ref Osc Freq) 6000000 +/-
Uwe DK1KQ

Should say RFM
Politly
PUSH PWR and Display/ Conf together
Then long push Display /conf long

uwe, DK1KQ

Hi struggling with failure
on LCD Display "CURR" is blinking with short beeps.
What is causing this indication?
Uwe is asking
73

Hi,
Just finished a TX 500.
To my surprise., the XMit Frequency is 13 KHz lower as indicated.
Question: can this offset in the service mode be adjusted ? - How ?

73
Uwe, dk1kq

How can a RESET be done ?

vy 73 Uwe, DK1KQ