I am still having problems with the 9700 on Mode J. Has anyone yet used the MFJ-916BMN duplexer on their system? I like the fact that it is designed for outdoor use and can be mounted to the mast. I have a comet CF-416, but would have to build a waterproof box for it if used and left on the tower....Any thoughts 73 Jerry KJ4EU
I have used a MFJ-916B in my portable setup and it was the biggest improvement I have made to my setup. I have since moved to a Mini-Circuits BLP-200+ as I use 2 radios verse a single full duplex radio.
On Thu, May 14, 2020 at 10:14 AM BeetleJerald Oliver via AMSAT-BB < [email protected]> wrote:
I am still having problems with the 9700 on Mode J. Has anyone yet used the MFJ-916BMN duplexer on their system? I like the fact that it is designed for outdoor use and can be mounted to the mast. I have a comet CF-416, but would have to build a waterproof box for it if used and left on the tower....Any thoughts 73 Jerry KJ4EU _______________________________________________ Sent via [email protected]. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: https://www.amsat.org/mailman/listinfo/amsat-bb
Just to mention on the BLP-200+, you can't transmit through it as it has a 0.5 watt maximum RF power. It is designed for a receive-only lines.
Mike va3mw
On Thu, May 14, 2020 at 11:32 AM Don KB2YSI via AMSAT-BB [email protected] wrote:
I have used a MFJ-916B in my portable setup and it was the biggest improvement I have made to my setup. I have since moved to a Mini-Circuits BLP-200+ as I use 2 radios verse a single full duplex radio.
On Thu, May 14, 2020 at 10:14 AM BeetleJerald Oliver via AMSAT-BB < [email protected]> wrote:
I am still having problems with the 9700 on Mode J. Has anyone yet used the MFJ-916BMN duplexer on their system? I like the fact that it is designed for outdoor use and can be mounted to the mast. I have a comet CF-416, but would have to build a waterproof box for it if used and left
on
the tower....Any thoughts 73 Jerry KJ4EU _______________________________________________ Sent via [email protected]. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership.
Opinions
expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite
program!
Subscription settings: https://www.amsat.org/mailman/listinfo/amsat-bb
-- 73, Don KB2YSI https://www.hamqth.com/kb2ysi _______________________________________________ Sent via [email protected]. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: https://www.amsat.org/mailman/listinfo/amsat-bb
I and other have pushed 20-25w through one without issue.
On Thu, May 14, 2020, 11:37 Michael Walker [email protected] wrote:
Just to mention on the BLP-200+, you can't transmit through it as it has a 0.5 watt maximum RF power. It is designed for a receive-only lines.
Mike va3mw
On Thu, May 14, 2020 at 11:32 AM Don KB2YSI via AMSAT-BB < [email protected]> wrote:
I have used a MFJ-916B in my portable setup and it was the biggest improvement I have made to my setup. I have since moved to a Mini-Circuits BLP-200+ as I use 2 radios verse a single full duplex radio.
On Thu, May 14, 2020 at 10:14 AM BeetleJerald Oliver via AMSAT-BB < [email protected]> wrote:
I am still having problems with the 9700 on Mode J. Has anyone yet used the MFJ-916BMN duplexer on their system? I like the fact that it is designed for outdoor use and can be mounted to the mast. I have a comet CF-416, but would have to build a waterproof box for it if used and
left on
the tower....Any thoughts 73 Jerry KJ4EU _______________________________________________ Sent via [email protected]. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership.
Opinions
expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite
program!
Subscription settings: https://www.amsat.org/mailman/listinfo/amsat-bb
-- 73, Don KB2YSI https://www.hamqth.com/kb2ysi _______________________________________________ Sent via [email protected]. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: https://www.amsat.org/mailman/listinfo/amsat-bb
Mike,
The 0.5w while is on the spec sheet for the BLP.... many of us use it and use way more than 0.5w.
https://twitter.com/w8lid/status/1172144221081542657?s=20
As someone who has an IC-9700, I do not suffer desene with mode J (and don't use the BLP on my setup). I'm betting those who do have J-Mode issuses have 1 of 2 problems 1) higher SWR or 2) running to much power.
As I stated in a previous e-mail: I have to say I'm not getting desense with my IC-9700, unless I'm using more power than is needed or should be using on the SSB Sats.
Maybe try to lower your power? RS-44 can easily be worked at around 2% (2w) power and I work SO-50 at 0-3% every time (500mw-3w)
On Thu, May 14, 2020 at 8:48 AM Michael Walker via AMSAT-BB < [email protected]> wrote:
Just to mention on the BLP-200+, you can't transmit through it as it has a 0.5 watt maximum RF power. It is designed for a receive-only lines.
Mike va3mw
On Thu, May 14, 2020 at 11:32 AM Don KB2YSI via AMSAT-BB < [email protected]> wrote:
I have used a MFJ-916B in my portable setup and it was the biggest improvement I have made to my setup. I have since moved to a
Mini-Circuits
BLP-200+ as I use 2 radios verse a single full duplex radio.
On Thu, May 14, 2020 at 10:14 AM BeetleJerald Oliver via AMSAT-BB < [email protected]> wrote:
I am still having problems with the 9700 on Mode J. Has anyone yet
used
the MFJ-916BMN duplexer on their system? I like the fact that it is designed for outdoor use and can be mounted to the mast. I have a
comet
CF-416, but would have to build a waterproof box for it if used and
left
on
the tower....Any thoughts 73 Jerry KJ4EU _______________________________________________ Sent via [email protected]. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership.
Opinions
expressed are solely those of the author, and do not reflect the official views
of
AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite
program!
Subscription settings: https://www.amsat.org/mailman/listinfo/amsat-bb
-- 73, Don KB2YSI https://www.hamqth.com/kb2ysi _______________________________________________ Sent via [email protected]. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership.
Opinions
expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite
program!
Subscription settings: https://www.amsat.org/mailman/listinfo/amsat-bb
Sent via [email protected]. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: https://www.amsat.org/mailman/listinfo/amsat-bb
I put 30 watts through mine all the time. It's had 70 watts put through it and survived.
W8LID got an explanation of the power rating from the manufacturer. I'll see if he can post it here.
73,
Paul, N8HM
On Thu, May 14, 2020 at 11:44 AM Michael Walker via AMSAT-BB [email protected] wrote:
Just to mention on the BLP-200+, you can't transmit through it as it has a 0.5 watt maximum RF power. It is designed for a receive-only lines.
Mike va3mw
On Thu, May 14, 2020 at 11:32 AM Don KB2YSI via AMSAT-BB [email protected] wrote:
I have used a MFJ-916B in my portable setup and it was the biggest improvement I have made to my setup. I have since moved to a Mini-Circuits BLP-200+ as I use 2 radios verse a single full duplex radio.
On Thu, May 14, 2020 at 10:14 AM BeetleJerald Oliver via AMSAT-BB < [email protected]> wrote:
I am still having problems with the 9700 on Mode J. Has anyone yet used the MFJ-916BMN duplexer on their system? I like the fact that it is designed for outdoor use and can be mounted to the mast. I have a comet CF-416, but would have to build a waterproof box for it if used and left
on
the tower....Any thoughts 73 Jerry KJ4EU _______________________________________________ Sent via [email protected]. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership.
Opinions
expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite
program!
Subscription settings: https://www.amsat.org/mailman/listinfo/amsat-bb
-- 73, Don KB2YSI https://www.hamqth.com/kb2ysi _______________________________________________ Sent via [email protected]. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: https://www.amsat.org/mailman/listinfo/amsat-bb
Sent via [email protected]. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: https://www.amsat.org/mailman/listinfo/amsat-bb
If it works, awesome! Problem solved.
I tend to trust the data the designer publishes first. After all, they know the limit of the components they use.
I would be concerned that any heat generated by the RF power would change the specs of the components used and that may result in more attenuation and may change the design specs. That could also result in higher SWR values.
If I had one, I would sweep it to make sure it still works as it should. Maybe someone who has a tracking generator has done that already.
There is a big difference between 0.5 watts and 25 watts.
500mwatts is about 14 V P-P and 25 watts is 100 V P-P
Mike va3mw
On Thu, May 14, 2020 at 11:59 AM Paul Stoetzer [email protected] wrote:
I put 30 watts through mine all the time. It's had 70 watts put through it and survived.
W8LID got an explanation of the power rating from the manufacturer. I'll see if he can post it here.
73,
Paul, N8HM
On Thu, May 14, 2020 at 11:44 AM Michael Walker via AMSAT-BB [email protected] wrote:
Just to mention on the BLP-200+, you can't transmit through it as it has
a
0.5 watt maximum RF power. It is designed for a receive-only lines.
Mike va3mw
On Thu, May 14, 2020 at 11:32 AM Don KB2YSI via AMSAT-BB <
wrote:
I have used a MFJ-916B in my portable setup and it was the biggest improvement I have made to my setup. I have since moved to a
Mini-Circuits
BLP-200+ as I use 2 radios verse a single full duplex radio.
On Thu, May 14, 2020 at 10:14 AM BeetleJerald Oliver via AMSAT-BB < [email protected]> wrote:
I am still having problems with the 9700 on Mode J. Has anyone yet
used
the MFJ-916BMN duplexer on their system? I like the fact that it is designed for outdoor use and can be mounted to the mast. I have a
comet
CF-416, but would have to build a waterproof box for it if used and
left
on
the tower....Any thoughts 73 Jerry KJ4EU _______________________________________________ Sent via [email protected]. AMSAT-NA makes this open forum
available
to all interested persons worldwide without requiring membership.
Opinions
expressed are solely those of the author, and do not reflect the official
views of
AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite
program!
Subscription settings:
https://www.amsat.org/mailman/listinfo/amsat-bb
-- 73, Don KB2YSI https://www.hamqth.com/kb2ysi _______________________________________________ Sent via [email protected]. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership.
Opinions
expressed are solely those of the author, and do not reflect the official views
of
AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite
program!
Subscription settings: https://www.amsat.org/mailman/listinfo/amsat-bb
Sent via [email protected]. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership.
Opinions expressed
are solely those of the author, and do not reflect the official views of
AMSAT-NA.
Not an AMSAT-NA member? Join now to support the amateur satellite
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Subscription settings: https://www.amsat.org/mailman/listinfo/amsat-bb
The manufacturer's power rating for this part is much higher than a typical, operative term, sat radio will put out. I use the Comet CF-360 with 100W and have experienced no heating of the duplexer. It is however, not to be used outdoors where it can be exposed to precipitation. If used outdoors an easily made enclosure can be made from a tupperware or like product. I use the plastic takeout containers we get here in coastal CenCal. Right now I have a gazillion of them. lol --- Ciao baby, catch you on the flip side 73 de W3AB/GEO
You can say "over", you can say "out", you just can't say "over and out".
On Thursday, May 14, 2020, 10:44:36 AM PDT, Michael Walker via AMSAT-BB [email protected] wrote:
If it works, awesome! Problem solved.
I tend to trust the data the designer publishes first. After all, they know the limit of the components they use.
I would be concerned that any heat generated by the RF power would change the specs of the components used and that may result in more attenuation and may change the design specs. That could also result in higher SWR values.
If I had one, I would sweep it to make sure it still works as it should. Maybe someone who has a tracking generator has done that already.
There is a big difference between 0.5 watts and 25 watts.
500mwatts is about 14 V P-P and 25 watts is 100 V P-P
Mike va3mw
On Thu, May 14, 2020 at 11:59 AM Paul Stoetzer [email protected] wrote:
I put 30 watts through mine all the time. It's had 70 watts put through it and survived.
W8LID got an explanation of the power rating from the manufacturer. I'll see if he can post it here.
73,
Paul, N8HM
On Thu, May 14, 2020 at 11:44 AM Michael Walker via AMSAT-BB [email protected] wrote:
Just to mention on the BLP-200+, you can't transmit through it as it has
a
0.5 watt maximum RF power. It is designed for a receive-only lines.
Mike va3mw
On Thu, May 14, 2020 at 11:32 AM Don KB2YSI via AMSAT-BB <
wrote:
I have used a MFJ-916B in my portable setup and it was the biggest improvement I have made to my setup. I have since moved to a
Mini-Circuits
BLP-200+ as I use 2 radios verse a single full duplex radio.
On Thu, May 14, 2020 at 10:14 AM BeetleJerald Oliver via AMSAT-BB < [email protected]> wrote:
I am still having problems with the 9700 on Mode J. Has anyone yet
used
the MFJ-916BMN duplexer on their system? I like the fact that it is designed for outdoor use and can be mounted to the mast. I have a
comet
CF-416, but would have to build a waterproof box for it if used and
left
on
the tower....Any thoughts 73 Jerry KJ4EU _______________________________________________ Sent via [email protected]. AMSAT-NA makes this open forum
available
to all interested persons worldwide without requiring membership.
Opinions
expressed are solely those of the author, and do not reflect the official
views of
AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite
program!
Subscription settings:
https://www.amsat.org/mailman/listinfo/amsat-bb
-- 73, Don KB2YSI https://www.hamqth.com/kb2ysi _______________________________________________ Sent via [email protected]. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership.
Opinions
expressed are solely those of the author, and do not reflect the official views
of
AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite
program!
Subscription settings: https://www.amsat.org/mailman/listinfo/amsat-bb
Sent via [email protected]. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership.
Opinions expressed
are solely those of the author, and do not reflect the official views of
AMSAT-NA.
Not an AMSAT-NA member? Join now to support the amateur satellite
program!
Subscription settings: https://www.amsat.org/mailman/listinfo/amsat-bb
_______________________________________________ Sent via [email protected]. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: https://www.amsat.org/mailman/listinfo/amsat-bb
participants (6)
-
BeetleJerald Oliver -
Don KB2YSI -
GEO Badger -
KI7UNJ Tucker -
Michael Walker -
Paul Stoetzer