JUMA views & prospects
Posted: 24 Jan 2013 21:01
I am more or less ready to get the JUMA TRX2 + JUMA PA100-D.
Sometimes it takes a while to propose questions as good as
possible. I thought about the JUMA products many times. Then I put it
back again into the area "later, later"
Now finally I would like to brainstorm my questions for once and for good.
Additionally I have some more questions who are not mine, because their
is another amateur interested in JUMA products here close by. My friend
didn't even knew, that products like yours exists.
* There are 3 Filter positions possible!
1. Are those 3 Filter positions for SSB AND 3 Filter positions for CW OR
3 Filter positions for all modulations?
2. How many Filter positions are available for the Transmitter? Either
for SSB AND/OR CW.?
3. Can the available filtering bandwidth both for reception AND
transmisson customized free (just for me; At least innitial one time)?
4. Is it possible to customize to transmission bandwidth for SSB as
followed: NAR=[low cut 300 Hz; High cut 2700 Hz (2.4 KHz bandwidth)],
MID=[low cut 200Hz; High cut 2.900Hz (2.7 KHz bandwidth)], WID=[low cut
100Hz; High cut 3.100Hz (3.0 KHz bandwidth)]. Is that possible?
5. For reception I wish for instance following values in SSB: NAR=[low
cut 200Hz; High cut 3.000 KHz (2.800 Hz bandwidth)], MID=[low cut 100
Hz; High cut 3.400 Hz (3.300 Hz bandwidth)], WID=[low cut 50 Hz; High
cut 4.550 Hz (4.500 Hz bandwidth)]. Cauld that be maintained?
6. Can the MIC-Input be adjusted for the use of Dynamic microphones?
7. Do you have a MIC gain in the machine (I didn't saw it).
8. Can the compression level be adjusted at any time?
9. Is a microphone equalizer available in the radio.
10. I want to use additional to the JUMA amplifier another one as well,
so I need the TR/TX line for that amplifire. And I need approx. 140W out
of the JUMA PA100-D in order to run full output with my second
amplifier. Is that possible?
*********
Questions from my friend
to juma trx:
1 - when is 600m available
2 - diversity receiption. 1 juma must as master control the other
n-juma´s on exactly same frequency, <1Hz. Is that possible? I want to
get out the I/Q-Signals and fed them into modified PowerSdr-Software (or
other). AND i can change the directions per hardware (1 vert per 1 juma
+ feeding/phase-lines). => Hardware PLUS Software-Decoding. Should be
better than every rig you can buy.
*********
I've been asked what my application will be¿?
Well? I want to run the JUMA TRX2 as my only main radio here in Germany.
And I can tell, that I will be heard. So it is very very important to
produce clean, clean audio. I want to use a Heil PR40 microphone
together with the JUMA TRX2
Why those strange sounding bandwidth? 4.500 Hz in SSB? Why? Well, when I
tend to listen shortwave radion I like to have it wide. To narrow a
signal is no problem with external equipment. To make it wider is
impossible.
And last not least I DON'T LIKE those big huge boasting radios from ICOM
type IC 7.600.
I like to have it small and neat. The ICOM IC-7000 isn't as good as I
wish. The New ICOM IS-7100 looks to me like an alarm clock. It might be
a good item, but I would get all the time angry how it looks like; So?
Just therefore I cannot buy it; I know me! So? What choices I have? Not
many. Actually the JUMA TRX2 is the only radio, which is left of interest
(according to the size).
It may be considered for the future to add more features to this fine
appearing rig.
73 de Hans-Heinrich - DL3BBW
Sometimes it takes a while to propose questions as good as
possible. I thought about the JUMA products many times. Then I put it
back again into the area "later, later"
Now finally I would like to brainstorm my questions for once and for good.
Additionally I have some more questions who are not mine, because their
is another amateur interested in JUMA products here close by. My friend
didn't even knew, that products like yours exists.
* There are 3 Filter positions possible!
1. Are those 3 Filter positions for SSB AND 3 Filter positions for CW OR
3 Filter positions for all modulations?
2. How many Filter positions are available for the Transmitter? Either
for SSB AND/OR CW.?
3. Can the available filtering bandwidth both for reception AND
transmisson customized free (just for me; At least innitial one time)?
4. Is it possible to customize to transmission bandwidth for SSB as
followed: NAR=[low cut 300 Hz; High cut 2700 Hz (2.4 KHz bandwidth)],
MID=[low cut 200Hz; High cut 2.900Hz (2.7 KHz bandwidth)], WID=[low cut
100Hz; High cut 3.100Hz (3.0 KHz bandwidth)]. Is that possible?
5. For reception I wish for instance following values in SSB: NAR=[low
cut 200Hz; High cut 3.000 KHz (2.800 Hz bandwidth)], MID=[low cut 100
Hz; High cut 3.400 Hz (3.300 Hz bandwidth)], WID=[low cut 50 Hz; High
cut 4.550 Hz (4.500 Hz bandwidth)]. Cauld that be maintained?
6. Can the MIC-Input be adjusted for the use of Dynamic microphones?
7. Do you have a MIC gain in the machine (I didn't saw it).
8. Can the compression level be adjusted at any time?
9. Is a microphone equalizer available in the radio.
10. I want to use additional to the JUMA amplifier another one as well,
so I need the TR/TX line for that amplifire. And I need approx. 140W out
of the JUMA PA100-D in order to run full output with my second
amplifier. Is that possible?
*********
Questions from my friend
to juma trx:
1 - when is 600m available
2 - diversity receiption. 1 juma must as master control the other
n-juma´s on exactly same frequency, <1Hz. Is that possible? I want to
get out the I/Q-Signals and fed them into modified PowerSdr-Software (or
other). AND i can change the directions per hardware (1 vert per 1 juma
+ feeding/phase-lines). => Hardware PLUS Software-Decoding. Should be
better than every rig you can buy.
*********
I've been asked what my application will be¿?
Well? I want to run the JUMA TRX2 as my only main radio here in Germany.
And I can tell, that I will be heard. So it is very very important to
produce clean, clean audio. I want to use a Heil PR40 microphone
together with the JUMA TRX2
Why those strange sounding bandwidth? 4.500 Hz in SSB? Why? Well, when I
tend to listen shortwave radion I like to have it wide. To narrow a
signal is no problem with external equipment. To make it wider is
impossible.
And last not least I DON'T LIKE those big huge boasting radios from ICOM
type IC 7.600.
I like to have it small and neat. The ICOM IC-7000 isn't as good as I
wish. The New ICOM IS-7100 looks to me like an alarm clock. It might be
a good item, but I would get all the time angry how it looks like; So?
Just therefore I cannot buy it; I know me! So? What choices I have? Not
many. Actually the JUMA TRX2 is the only radio, which is left of interest
(according to the size).
It may be considered for the future to add more features to this fine
appearing rig.
73 de Hans-Heinrich - DL3BBW