Re: [Flexradio] Flex-6500 antenna port (s)

[Brian Lloyd]

On Mon, Jun 4, 2012 at 4:35 AM, Mike Valentine  wrote:

> One sees plenty of T2FD lookalikes on the roofs of Federal buildings all
> across America.  ALE?
>

Yup.


>
> 
> From: br...@lloyd.com [mailto:br...@lloyd.com] On Behalf Of Brian Lloyd
> Sent: Monday, June 04, 2012 2:28 AM
> To: John Swink
> Cc: Mike Valentine; flexradio@flex-radio.biz
> Subject: Re: [Flexradio] Flex-6500 antenna port (s)
>
>
> On Sun, Jun 3, 2012 at 6:42 PM, John Swink  jms...@wowway.com>> wrote:
> Maybe the best antenna solution is a very large discone antenna like the
> one
> at the old missile site near Tucson, AZ.  Unity gain but very large
> bandwidth.
>
> A very-common, no-tune RX antenna is the Tilted Terminated Folded Dipole
> (T2FD). And if the termination is built to handle enough power, it can be
> used for transmit too. Here is a good construction article for one.
>
> http://www.korpi.biz/t2fd.pdf
>
>
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> http://www.flexradio.com/
>



-- 
Brian Lloyd, WB6RQN/J79BPL
3191 Western Dr.
Cameron Park, CA 95682
br...@lloyd.com
+1.767.617.1365 (Dominica)
+1.916.877.5067 (USA)
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Re: [Flexradio] Flex-6500 antenna port (s)

[Mike Valentine]

One sees plenty of T2FD lookalikes on the roofs of Federal buildings all across 
America.  ALE?


From: br...@lloyd.com [mailto:br...@lloyd.com] On Behalf Of Brian Lloyd
Sent: Monday, June 04, 2012 2:28 AM
To: John Swink
Cc: Mike Valentine; flexradio@flex-radio.biz
Subject: Re: [Flexradio] Flex-6500 antenna port (s)


On Sun, Jun 3, 2012 at 6:42 PM, John Swink 
mailto:jms...@wowway.com>> wrote:
Maybe the best antenna solution is a very large discone antenna like the one
at the old missile site near Tucson, AZ.  Unity gain but very large
bandwidth.

A very-common, no-tune RX antenna is the Tilted Terminated Folded Dipole 
(T2FD). And if the termination is built to handle enough power, it can be used 
for transmit too. Here is a good construction article for one.

http://www.korpi.biz/t2fd.pdf


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Re: [Flexradio] Flex-6500 antenna port (s)

[Brian Lloyd]

On Sun, Jun 3, 2012 at 6:42 PM, John Swink  wrote:

> Maybe the best antenna solution is a very large discone antenna like the
> one
> at the old missile site near Tucson, AZ.  Unity gain but very large
> bandwidth.
>

A very-common, no-tune RX antenna is the Tilted Terminated Folded Dipole
(T2FD). And if the termination is built to handle enough power, it can be
used for transmit too. Here is a good construction article for one.

http://www.korpi.biz/t2fd.pdf

-- 
Brian Lloyd, WB6RQN/J79BPL
3191 Western Dr.
Cameron Park, CA 95682
br...@lloyd.com
+1.767.617.1365 (Dominica)
+1.916.877.5067 (USA)
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Re: [Flexradio] Flex-6500 antenna port (s)

[dan edwards]

or, something as simple as an active vertical...e.g. a hi-Z plus 6 with 10 to 
20' vertical against a single short ground rod...several other small active 
antennas have very wide bandwidth also..73, w5xz, dan

--- On Mon, 6/4/12, John Swink  wrote:

From: John Swink 
Subject: Re: [Flexradio] Flex-6500 antenna port (s)
To: "'Mike Valentine'" , flexradio@flex-radio.biz
Date: Monday, June 4, 2012, 1:42 AM

Maybe the best antenna solution is a very large discone antenna like the one
at the old missile site near Tucson, AZ.  Unity gain but very large
bandwidth.

John, N8WNA


-Original Message-
From: flexradio-boun...@flex-radio.biz
[mailto:flexradio-boun...@flex-radio.biz] On Behalf Of Mike Valentine
Sent: Sunday, June 03, 2012 8:10 PM
To: flexradio@flex-radio.biz
Subject: Re: [Flexradio] Flex-6500 antenna port (s)

I have an M2 7&10-30LP8 log periodic up at 120 feet that will do wonders as
an input to the Flex-6xxx receivers.

http://www.m2inc.com/pdf_manuals/7%20&%2010-30LP8.pdf

It covers 40M-10M very well and makes an interesting "monitor" antenna on 6
meters with lots of minor lobes shooting off very which way.  My rotator was
inoperative while PJ6D was in on 6 last summer and I couldn't quite make the
QSO on the ill-pointed 6 meter beam.  I switched to the log and was able to
make the QSO off one of the many lobes.

Mike - W8MM


On Jun 3, 2012, at 7:26 PM, Chuck ONeal wrote:

Think log periodics...several good ones out there that cover 14 - 30 MHz,
giving 5 bands and some do 10 - 30 MHz.  Stack 'em and they are very
competitive.

Chuck K1KW - check out my QRZ.com<http://QRZ.com> picture for such an
antenna.

- Original Message -
From: "Jim Jannuzzo" mailto:jsqu...@msn.com>>
To: mailto:j...@3kitty.org>>; "Gerald Youngblood"
mailto:ger...@flexradio.com>>
Cc: mailto:flexradio@flex-radio.biz>>
Sent: Sunday, June 03, 2012 7:17 PM
Subject: Re: [Flexradio] Flex-6500 antenna port (s)






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Re: [Flexradio] Flex-6500 antenna port (s)

[John Swink]

Maybe the best antenna solution is a very large discone antenna like the one
at the old missile site near Tucson, AZ.  Unity gain but very large
bandwidth.

John, N8WNA


-Original Message-
From: flexradio-boun...@flex-radio.biz
[mailto:flexradio-boun...@flex-radio.biz] On Behalf Of Mike Valentine
Sent: Sunday, June 03, 2012 8:10 PM
To: flexradio@flex-radio.biz
Subject: Re: [Flexradio] Flex-6500 antenna port (s)

I have an M2 7&10-30LP8 log periodic up at 120 feet that will do wonders as
an input to the Flex-6xxx receivers.

http://www.m2inc.com/pdf_manuals/7%20&%2010-30LP8.pdf

It covers 40M-10M very well and makes an interesting "monitor" antenna on 6
meters with lots of minor lobes shooting off very which way.  My rotator was
inoperative while PJ6D was in on 6 last summer and I couldn't quite make the
QSO on the ill-pointed 6 meter beam.  I switched to the log and was able to
make the QSO off one of the many lobes.

Mike - W8MM


On Jun 3, 2012, at 7:26 PM, Chuck ONeal wrote:

Think log periodics...several good ones out there that cover 14 - 30 MHz,
giving 5 bands and some do 10 - 30 MHz.  Stack 'em and they are very
competitive.

Chuck K1KW - check out my QRZ.com<http://QRZ.com> picture for such an
antenna.

- Original Message -
From: "Jim Jannuzzo" mailto:jsqu...@msn.com>>
To: mailto:j...@3kitty.org>>; "Gerald Youngblood"
mailto:ger...@flexradio.com>>
Cc: mailto:flexradio@flex-radio.biz>>
Sent: Sunday, June 03, 2012 7:17 PM
Subject: Re: [Flexradio] Flex-6500 antenna port (s)






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http://www.flexradio.com/


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Re: [Flexradio] Flex-6500 antenna port (s)

[Mike Valentine]

I have an M2 7&10-30LP8 log periodic up at 120 feet that will do wonders as an 
input to the Flex-6xxx receivers.

http://www.m2inc.com/pdf_manuals/7%20&%2010-30LP8.pdf

It covers 40M-10M very well and makes an interesting "monitor" antenna on 6 
meters with lots of minor lobes shooting off very which way.  My rotator was 
inoperative while PJ6D was in on 6 last summer and I couldn't quite make the 
QSO on the ill-pointed 6 meter beam.  I switched to the log and was able to 
make the QSO off one of the many lobes.

Mike - W8MM


On Jun 3, 2012, at 7:26 PM, Chuck ONeal wrote:

Think log periodics...several good ones out there that cover 14 - 30 MHz,
giving 5 bands and some do 10 - 30 MHz.  Stack 'em and they are very
competitive.

Chuck K1KW - check out my QRZ.com<http://QRZ.com> picture for such an antenna.

- Original Message -
From: "Jim Jannuzzo" mailto:jsqu...@msn.com>>
To: mailto:j...@3kitty.org>>; "Gerald Youngblood" 
mailto:ger...@flexradio.com>>
Cc: mailto:flexradio@flex-radio.biz>>
Sent: Sunday, June 03, 2012 7:17 PM
Subject: Re: [Flexradio] Flex-6500 antenna port (s)






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Re: [Flexradio] Flex-6500 antenna port (s)

[Chuck ONeal]

Think log periodics...several good ones out there that cover 14 - 30 MHz, 
giving 5 bands and some do 10 - 30 MHz.  Stack 'em and they are very 
competitive.


Chuck K1KW - check out my QRZ.com picture for such an antenna.

- Original Message - 
From: "Jim Jannuzzo" 

To: ; "Gerald Youngblood" 
Cc: 
Sent: Sunday, June 03, 2012 7:17 PM
Subject: Re: [Flexradio] Flex-6500 antenna port (s)



Jack,This very question has been troubling me.  SInce the radio will receive 
all frequencies, and display 8 slices of them, how do you engineer an 
antenna with gain across all frequencies, and/or gain in eight directions? 
(Since the 6700 has two antenna paths for its eight slices, you'd really 
only need to engineer gain in four directions, and or on four frequencies). 
Is the answer a no-gain vertical, or long wire?  Or external antenna 
switches into the two RF paths?
I can just imagine my SteppIR trying to adjust length for four slices at 
once: it'd be better than watching a trombone concert.

> Date: Sun, 3 Jun 2012 13:36:19 -0700

From: j...@3kitty.org
To: ger...@flexradio.com
CC: flexradio@flex-radio.biz
Subject: Re: [Flexradio] Flex-6500 antenna port (s)

A diagram of the hardware innards will certainly be helpful.But I 
think

some diagrams showing how the new hardware might be used within an overall
station would be even better.

For example,  the ability to receive (and presumably transmit where legal)
over the DC-to-daylight spectrum is technically very cool.   But what kind
of antenna system is connected to that port so that an operator can take
advantage of the power of an SCU? How does a station use the typical
limited-bandwidth ham antennas,  antenna tuners,  etc.?

What kind of operating activities might that operator be doing at the
time?

E. G.,  what might my station look like if I want to work a multi-mode
contest on 40/20/15 bands while I also monitor WWV and 6M?   People do 
this

kind of stuff now with multiple radios and multiple antennas.   How will
the new Flex fit into such a picture?

The new hardware is very cool.   But it's unclear how you might use it in 
a

real station configuration to take advantage of the capabilities.   Some
concrete examples would help a lot.

73,
/Jack de K3FIV
 On May 26, 2012 9:02 AM, "Gerald Youngblood"  
wrote:


> Dennis,
>
> We are working on a diagram but let me try to explain in the interim.
>
> Let's start with the FLEX-6500, which has a single SCU.
>
>   1. A Spectral Capture Unit (SCU) digitizes the entire spectrum from 30
>   KHz to 77 MHz in one swallow using a 245.76 Msps A/D converter.
>   2. The SCU consists of the RF front end (preselectors, RF preamps,
>   Nyquist filter, ADC, FPFA, and DSP) to capture and process that 
> spectrum.

>   3. This SCU can connect to only one antenna at a time because there is
>   only a single RF to digital path.
>   4. However, this SCU can connect to any one of ANT1, ANT2, RX IN A, or
>   the XVTR port through a relay switching matrix.
>   5. The Slice Receivers are full performance digital receivers that do
>   direct digital down conversion to audio with independent demodulation,
>   filtering, AGC, NR, etc. for each receiver.
>   6. Each of the four Slice Receivers and their respective panadapters 
> on
>   the 6500 can be tuned independently and concurrently to any frequency 
> and
>   mode within the 77 MHz spectrum.  All receivers have the exact same 
> high

>dynamic range performance.
>
> Now to the FLEX-6700, which has two identical SCUs in parallel.
>
>   1. With two SCUs we now have two independent RF to digital paths that
>   can be connected to two independent antennas or can share one antenna
>   through a RF power splitter.
>   2. With two SCUs, one can be on ANT1 and the other on ANT2.  SCU B can
>   receive on RX IN B while SCU A is transceiving on ANT1.  SCU B could
>   alternately transceive on the XVTR port.
>   3. With two SCUs and two antennas, we can do spatial diversity, beam
>   forming and steering, noise mitigation, etc. that involves phasing the
>   antennas in software.  Many customers enjoy this feature (ESC) today 
> on

> the
>   FLEX-5000 with RX2.
>   4. With two SCUs, one can be connected to a narrow band StepIR for
>   transceiver while the other is connected to a multi-band antenna 
> watching

>   for band openings or multipliers in a contest.
>   5. With the additional signal processing on the 6700, you currently 
> get

>   up to a total of 8 Slice Receivers that can be used on a single SCU or
>   allocated across both SCUs.
>   6. The 6700 adds the option of tuning 135-165 MHz on either SCU. 
> Note
>   that the 30 KHz to 77 MHz and 136-165 MHz ranges are mutually 
> exclusive

> on
>   a single SCU.  It requires two SCUs to use both ran

Re: [Flexradio] Flex-6500 antenna port (s)

[Len Morris]

It would seem to me that the SteppIR will only track the TX freq, which there 
will only be one freq. The other slices will get what the Rx antenna will 
cover, and slices out of the antenna gain range will be down.. The slice that 
is tracking the Tx will be fine.. 
Is that too simple of an explanation?
That is how I see my 6500 working when I get it.

Len
VE3FJB/VA3LM

On 2012-06-03, at 7:17 PM, Jim Jannuzzo wrote:

> 
> Jack,This very question has been troubling me.  SInce the radio will receive 
> all frequencies, and display 8 slices of them, how do you engineer an antenna 
> with gain across all frequencies, and/or gain in eight directions?  (Since 
> the 6700 has two antenna paths for its eight slices, you'd really only need 
> to engineer gain in four directions, and or on four frequencies). Is the 
> answer a no-gain vertical, or long wire?  Or external antenna switches into 
> the two RF paths? 
> I can just imagine my SteppIR trying to adjust length for four slices at 
> once: it'd be better than watching a trombone concert.  
>> Date: Sun, 3 Jun 2012 13:36:19 -0700
>> From: j...@3kitty.org
>> To: ger...@flexradio.com
>> CC: flexradio@flex-radio.biz
>> Subject: Re: [Flexradio] Flex-6500 antenna port (s)
>> 
>> A diagram of the hardware innards will certainly be helpful.But I think
>> some diagrams showing how the new hardware might be used within an overall
>> station would be even better.
>> 
>> For example,  the ability to receive (and presumably transmit where legal)
>> over the DC-to-daylight spectrum is technically very cool.   But what kind
>> of antenna system is connected to that port so that an operator can take
>> advantage of the power of an SCU? How does a station use the typical
>> limited-bandwidth ham antennas,  antenna tuners,  etc.?
>> 
>> What kind of operating activities might that operator be doing at the
>> time?
>> 
>> E. G.,  what might my station look like if I want to work a multi-mode
>> contest on 40/20/15 bands while I also monitor WWV and 6M?   People do this
>> kind of stuff now with multiple radios and multiple antennas.   How will
>> the new Flex fit into such a picture?
>> 
>> The new hardware is very cool.   But it's unclear how you might use it in a
>> real station configuration to take advantage of the capabilities.   Some
>> concrete examples would help a lot.
>> 
>> 73,
>> /Jack de K3FIV
>> On May 26, 2012 9:02 AM, "Gerald Youngblood"  wrote:
>> 
>>> Dennis,
>>> 
>>> We are working on a diagram but let me try to explain in the interim.
>>> 
>>> Let's start with the FLEX-6500, which has a single SCU.
>>> 
>>>  1. A Spectral Capture Unit (SCU) digitizes the entire spectrum from 30
>>>  KHz to 77 MHz in one swallow using a 245.76 Msps A/D converter.
>>>  2. The SCU consists of the RF front end (preselectors, RF preamps,
>>>  Nyquist filter, ADC, FPFA, and DSP) to capture and process that spectrum.
>>>  3. This SCU can connect to only one antenna at a time because there is
>>>  only a single RF to digital path.
>>>  4. However, this SCU can connect to any one of ANT1, ANT2, RX IN A, or
>>>  the XVTR port through a relay switching matrix.
>>>  5. The Slice Receivers are full performance digital receivers that do
>>>  direct digital down conversion to audio with independent demodulation,
>>>  filtering, AGC, NR, etc. for each receiver.
>>>  6. Each of the four Slice Receivers and their respective panadapters on
>>>  the 6500 can be tuned independently and concurrently to any frequency and
>>>  mode within the 77 MHz spectrum.  All receivers have the exact same high
>>>   dynamic range performance.
>>> 
>>> Now to the FLEX-6700, which has two identical SCUs in parallel.
>>> 
>>>  1. With two SCUs we now have two independent RF to digital paths that
>>>  can be connected to two independent antennas or can share one antenna
>>>  through a RF power splitter.
>>>  2. With two SCUs, one can be on ANT1 and the other on ANT2.  SCU B can
>>>  receive on RX IN B while SCU A is transceiving on ANT1.  SCU B could
>>>  alternately transceive on the XVTR port.
>>>  3. With two SCUs and two antennas, we can do spatial diversity, beam
>>>  forming and steering, noise mitigation, etc. that involves phasing the
>>>  antennas in software.  Many customers enjoy this feature (ESC) today on
>>> the
>>>  FLEX-5000 with RX2.
>>>  4. With two SCUs, one can be connected to a narrow band StepIR for
>>

Re: [Flexradio] Flex-6500 antenna port (s)

[Jim Jannuzzo]

Jack,This very question has been troubling me.  SInce the radio will receive 
all frequencies, and display 8 slices of them, how do you engineer an antenna 
with gain across all frequencies, and/or gain in eight directions?  (Since the 
6700 has two antenna paths for its eight slices, you'd really only need to 
engineer gain in four directions, and or on four frequencies). Is the answer a 
no-gain vertical, or long wire?  Or external antenna switches into the two RF 
paths? 
I can just imagine my SteppIR trying to adjust length for four slices at once: 
it'd be better than watching a trombone concert.  
 > Date: Sun, 3 Jun 2012 13:36:19 -0700
> From: j...@3kitty.org
> To: ger...@flexradio.com
> CC: flexradio@flex-radio.biz
> Subject: Re: [Flexradio] Flex-6500 antenna port (s)
> 
> A diagram of the hardware innards will certainly be helpful.But I think
> some diagrams showing how the new hardware might be used within an overall
> station would be even better.
> 
> For example,  the ability to receive (and presumably transmit where legal)
> over the DC-to-daylight spectrum is technically very cool.   But what kind
> of antenna system is connected to that port so that an operator can take
> advantage of the power of an SCU? How does a station use the typical
> limited-bandwidth ham antennas,  antenna tuners,  etc.?
> 
> What kind of operating activities might that operator be doing at the
> time?
> 
> E. G.,  what might my station look like if I want to work a multi-mode
> contest on 40/20/15 bands while I also monitor WWV and 6M?   People do this
> kind of stuff now with multiple radios and multiple antennas.   How will
> the new Flex fit into such a picture?
> 
> The new hardware is very cool.   But it's unclear how you might use it in a
> real station configuration to take advantage of the capabilities.   Some
> concrete examples would help a lot.
> 
> 73,
> /Jack de K3FIV
>  On May 26, 2012 9:02 AM, "Gerald Youngblood"  wrote:
> 
> > Dennis,
> >
> > We are working on a diagram but let me try to explain in the interim.
> >
> > Let's start with the FLEX-6500, which has a single SCU.
> >
> >   1. A Spectral Capture Unit (SCU) digitizes the entire spectrum from 30
> >   KHz to 77 MHz in one swallow using a 245.76 Msps A/D converter.
> >   2. The SCU consists of the RF front end (preselectors, RF preamps,
> >   Nyquist filter, ADC, FPFA, and DSP) to capture and process that spectrum.
> >   3. This SCU can connect to only one antenna at a time because there is
> >   only a single RF to digital path.
> >   4. However, this SCU can connect to any one of ANT1, ANT2, RX IN A, or
> >   the XVTR port through a relay switching matrix.
> >   5. The Slice Receivers are full performance digital receivers that do
> >   direct digital down conversion to audio with independent demodulation,
> >   filtering, AGC, NR, etc. for each receiver.
> >   6. Each of the four Slice Receivers and their respective panadapters on
> >   the 6500 can be tuned independently and concurrently to any frequency and
> >   mode within the 77 MHz spectrum.  All receivers have the exact same high
> >dynamic range performance.
> >
> > Now to the FLEX-6700, which has two identical SCUs in parallel.
> >
> >   1. With two SCUs we now have two independent RF to digital paths that
> >   can be connected to two independent antennas or can share one antenna
> >   through a RF power splitter.
> >   2. With two SCUs, one can be on ANT1 and the other on ANT2.  SCU B can
> >   receive on RX IN B while SCU A is transceiving on ANT1.  SCU B could
> >   alternately transceive on the XVTR port.
> >   3. With two SCUs and two antennas, we can do spatial diversity, beam
> >   forming and steering, noise mitigation, etc. that involves phasing the
> >   antennas in software.  Many customers enjoy this feature (ESC) today on
> > the
> >   FLEX-5000 with RX2.
> >   4. With two SCUs, one can be connected to a narrow band StepIR for
> >   transceiver while the other is connected to a multi-band antenna watching
> >   for band openings or multipliers in a contest.
> >   5. With the additional signal processing on the 6700, you currently get
> >   up to a total of 8 Slice Receivers that can be used on a single SCU or
> >   allocated across both SCUs.
> >   6. The 6700 adds the option of tuning 135-165 MHz on either SCU.   Note
> >   that the 30 KHz to 77 MHz and 136-165 MHz ranges are mutually exclusive
> > on
> >   a single SCU.  It requires two SCUs to use both ranges simultaneously.
> >   7. On the 6700, you might choose to monitor up to seven 2m repeaters o

Re: [Flexradio] Flex-6500 antenna port (s)

[Jack Haverty]

A diagram of the hardware innards will certainly be helpful.But I think
some diagrams showing how the new hardware might be used within an overall
station would be even better.

For example,  the ability to receive (and presumably transmit where legal)
over the DC-to-daylight spectrum is technically very cool.   But what kind
of antenna system is connected to that port so that an operator can take
advantage of the power of an SCU? How does a station use the typical
limited-bandwidth ham antennas,  antenna tuners,  etc.?

What kind of operating activities might that operator be doing at the
time?

E. G.,  what might my station look like if I want to work a multi-mode
contest on 40/20/15 bands while I also monitor WWV and 6M?   People do this
kind of stuff now with multiple radios and multiple antennas.   How will
the new Flex fit into such a picture?

The new hardware is very cool.   But it's unclear how you might use it in a
real station configuration to take advantage of the capabilities.   Some
concrete examples would help a lot.

73,
/Jack de K3FIV
 On May 26, 2012 9:02 AM, "Gerald Youngblood"  wrote:

> Dennis,
>
> We are working on a diagram but let me try to explain in the interim.
>
> Let's start with the FLEX-6500, which has a single SCU.
>
>   1. A Spectral Capture Unit (SCU) digitizes the entire spectrum from 30
>   KHz to 77 MHz in one swallow using a 245.76 Msps A/D converter.
>   2. The SCU consists of the RF front end (preselectors, RF preamps,
>   Nyquist filter, ADC, FPFA, and DSP) to capture and process that spectrum.
>   3. This SCU can connect to only one antenna at a time because there is
>   only a single RF to digital path.
>   4. However, this SCU can connect to any one of ANT1, ANT2, RX IN A, or
>   the XVTR port through a relay switching matrix.
>   5. The Slice Receivers are full performance digital receivers that do
>   direct digital down conversion to audio with independent demodulation,
>   filtering, AGC, NR, etc. for each receiver.
>   6. Each of the four Slice Receivers and their respective panadapters on
>   the 6500 can be tuned independently and concurrently to any frequency and
>   mode within the 77 MHz spectrum.  All receivers have the exact same high
>dynamic range performance.
>
> Now to the FLEX-6700, which has two identical SCUs in parallel.
>
>   1. With two SCUs we now have two independent RF to digital paths that
>   can be connected to two independent antennas or can share one antenna
>   through a RF power splitter.
>   2. With two SCUs, one can be on ANT1 and the other on ANT2.  SCU B can
>   receive on RX IN B while SCU A is transceiving on ANT1.  SCU B could
>   alternately transceive on the XVTR port.
>   3. With two SCUs and two antennas, we can do spatial diversity, beam
>   forming and steering, noise mitigation, etc. that involves phasing the
>   antennas in software.  Many customers enjoy this feature (ESC) today on
> the
>   FLEX-5000 with RX2.
>   4. With two SCUs, one can be connected to a narrow band StepIR for
>   transceiver while the other is connected to a multi-band antenna watching
>   for band openings or multipliers in a contest.
>   5. With the additional signal processing on the 6700, you currently get
>   up to a total of 8 Slice Receivers that can be used on a single SCU or
>   allocated across both SCUs.
>   6. The 6700 adds the option of tuning 135-165 MHz on either SCU.   Note
>   that the 30 KHz to 77 MHz and 136-165 MHz ranges are mutually exclusive
> on
>   a single SCU.  It requires two SCUs to use both ranges simultaneously.
>   7. On the 6700, you might choose to monitor up to seven 2m repeaters on
>   one SCU while working 20m with the other.  You could also monitor the
> 10m,
>   and 6m on one SCU while watching 2m on the second SCU at the same time
> for
>   weak signal openings. The combinations are endless.
>   8. You could also monitor the 50.110, 50.125 and six
>   beacons simultaneously on 6m (the magic band).  You could even set some
> of
>   the Slice Receivers to monitor MUF on signals below 6m or any other band
>   for that matter.
>
> I realize a diagram will be helpful but I hope that this clears up many of
> the questions until we are able to publish more.
>
> 73,
> Gerald
>
>
> Gerald Youngblood, K5SDR
> President and CEO
> FlexRadio Systems(TM)
> Email: ger...@flexradio.com
> Web: www.flexradio.com 
>
> Tune In Excitement (TM)
> PowerSDR(TM) is a trademark of FlexRadio Systems
>
>
>
>
>
> On Sat, May 26, 2012 at 9:28 AM, Dennis Petrich  >wrote:
>
> > Hello Eric,
> >
> >
> >
> > A friend and are now thoroughly confused on this whole antenna port
> > question….  In a recent email you say only one antenna to an SCU and in a
> > previous question I asked on the 24th you said I can have a receive
> antenna
> > connected as well as a main antenna ( I assume that means I can switch
> > between antennas  like on the 5000A)….  So which is it???
> >
> >
> >
> > On this whole ques

Re: [Flexradio] Flex-6500 antenna port (s)

[DAN HAMMILL]

On Sat, May 26, 2012 at 9:53 AM, Brian Lloyd  wrote:

> On Sat, May 26, 2012 at 9:02 AM, Gerald Youngblood  >wrote:
>
> 
>

   So the solution is to do one of two things:

>
>   1. Keep adding all kinds of switching to the radio itself, e.g. more
>   processing loops;
>   2. move all the switching to an external box or patch panel.
>
> 
>


> So, here is hoping for a sensible external crossbar switch that will allow
> any combination of switching under software control (Ethernet/IP
> connection, please), with high (70+ dB) isolation. That is going to be much
> more flexible than any sort of switching one is going to put on the box
> itself.
>
> --
> Brian Lloyd, WB6RQN/J79BPL
> 3191 Western Dr.
> Cameron Park, CA 95682
> br...@lloyd.com
> +1.767.617.1365 (Dominica)
> +1.916.877.5067 (USA)
> ___
>


Many of the high-end RF switch companies sell some very nice blocking RF
switch matrices that meet these requirements.  They'll set you back quite a
few $, though ;-)

For a less pricey alternative, take a look here:


http://www.microwavejournal.com/articles/1615-matrix-switches-blocking-versus-non-blocking

then acquire the appropriate surplus multi-port mechanical coaxial switches
off of eBay, etc., and homebrew the beast.

Let's say you wanted a 4x8 matrix.  You would need:

4 8-port switches (RX-side) ...can't find any 8-port? Use 2x 4-ports
and a Transfer switch configured as a self-terminating SPDT (corner common
and a termination on the opposite corner)
8 4-port switches (Antenna-side)
32   short low-loss coaxial cables w/ connectors to match the switches (you
might want to have these made new - or DIY)
1 control mechanism of your choice
Nappropriate DC power supplies (go linear here to keep the RF noise
down)

Ta-Daaa ... you have a matrix that can connect any one of the 4 RX-side
ports to any one of the 8 antenna-side ports simultaneously, with the sole
exception being that a single Antenna-side port can only feed one RX-side
port at a time, and vice-versa.  Insertion loss at HF/VHF will be very low
in the switches, with the dominating factor being the interconnecting
cables.  Isolation will be 80 dB or better (I've measured in excess of 100
dB at HF/VHF).

If you want more ports on either side, just follow the general example
above accordingly.  If you plan on running TX power through the matrix,
then look up the power handling capability for the particular switch model
numbers you have.  I've been able to find data online for switches just by
doing Google searches with the exact part number - even when they haven't
been made for several years.

I've used this sort of matrix in complex engineering characterization test
systems for years and they can be quite versatile for routing signals in
both directions to where you need them.

Oh... and if you decide to try this with solid-state switches, the
insertion losses will be greater and the power handling capability will
generally be much lower.

73
Dan  KB5MY/6  DM13nc
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Re: [Flexradio] Flex-6500 antenna port (s)

[Gerald Youngblood]

Chuck,

See answers below.

73,
Gerald

Sent from my iPad

On May 26, 2012, at 12:07 PM, "Chuck ONeal"  wrote:

> In a single SCU with let's say two slice receivers, one set to look at just 
> the 160M band and the other set to look at 6M, how is the front end 
> preselection done?  Would two band pass filters be put in "parallel" to 
> handle the preselection for the two slice receivers' frequency ranges?  If 
> so, what would happen if you used four slice receivers on 160, 80, 40, and 20 
> M?  Would the front end being partially "open" on the lower frequencies 
> affect the 20 M receiver?

In simultaneous mode on a single SCU, it will be in wide band receive mode with 
HFP at 1.8 MHz and LPF at 77 MHz.  The BPF topology may actually allow us to 
run in parallel but this is untested and not guaranteed.  Due to the high 
dynamic range performance of these radios, preselectors will usually only be 
needed in a multi-multi contest station or field day.

> 
> Also, have the noisy Peregrine Semi PE 4259's used in the 5000 RFIO board 
> been eliminated in the 6000?  Those things and their internal switching -Vcc 
> supply produce an elevated noise floor due to harmonics appearing as unstable 
> broad noise bumps seen across the MF to HF spectrum.  It does affect 
> performance on 12 and 10 M to the extent that I use an external high gain 
> preamp, turn off the internal preamp, and use the gain correction in the 
> antenna tab to bring things back to calibration.  I'm in a VERY quiet 
> location and am limited by atmospheric noise only.

The FLEX-6000 series uses 100% mechanical relays except for the one exception 
QSK transmitter switch, which is a PIN diode.  The receive path uses reed 
relays for TR.  

Thanks!
> 
> Chuck K1KW
> 
> 
> 
> 
> - Original Message - From: "Gerald Youngblood" 
> To: "Dennis Petrich" 
> Cc: 
> Sent: Saturday, May 26, 2012 12:02 PM
> Subject: Re: [Flexradio] Flex-6500 antenna port (s)
> 
> 
> Dennis,
> 
> We are working on a diagram but let me try to explain in the interim.
> 
> Let's start with the FLEX-6500, which has a single SCU.
> 
>  1. A Spectral Capture Unit (SCU) digitizes the entire spectrum from 30
>  KHz to 77 MHz in one swallow using a 245.76 Msps A/D converter.
>  2. The SCU consists of the RF front end (preselectors, RF preamps,
>  Nyquist filter, ADC, FPFA, and DSP) to capture and process that spectrum.
>  3. This SCU can connect to only one antenna at a time because there is
>  only a single RF to digital path.
>  4. However, this SCU can connect to any one of ANT1, ANT2, RX IN A, or
>  the XVTR port through a relay switching matrix.
>  5. The Slice Receivers are full performance digital receivers that do
>  direct digital down conversion to audio with independent demodulation,
>  filtering, AGC, NR, etc. for each receiver.
>  6. Each of the four Slice Receivers and their respective panadapters on
>  the 6500 can be tuned independently and concurrently to any frequency and
>  mode within the 77 MHz spectrum.  All receivers have the exact same high
>   dynamic range performance.
> 
> Now to the FLEX-6700, which has two identical SCUs in parallel.
> 
>  1. With two SCUs we now have two independent RF to digital paths that
>  can be connected to two independent antennas or can share one antenna
>  through a RF power splitter.
>  2. With two SCUs, one can be on ANT1 and the other on ANT2.  SCU B can
>  receive on RX IN B while SCU A is transceiving on ANT1.  SCU B could
>  alternately transceive on the XVTR port.
>  3. With two SCUs and two antennas, we can do spatial diversity, beam
>  forming and steering, noise mitigation, etc. that involves phasing the
>  antennas in software.  Many customers enjoy this feature (ESC) today on the
>  FLEX-5000 with RX2.
>  4. With two SCUs, one can be connected to a narrow band StepIR for
>  transceiver while the other is connected to a multi-band antenna watching
>  for band openings or multipliers in a contest.
>  5. With the additional signal processing on the 6700, you currently get
>  up to a total of 8 Slice Receivers that can be used on a single SCU or
>  allocated across both SCUs.
>  6. The 6700 adds the option of tuning 135-165 MHz on either SCU.   Note
>  that the 30 KHz to 77 MHz and 136-165 MHz ranges are mutually exclusive on
>  a single SCU.  It requires two SCUs to use both ranges simultaneously.
>  7. On the 6700, you might choose to monitor up to seven 2m repeaters on
>  one SCU while working 20m with the other.  You could also monitor the 10m,
>  and 6m on one SCU while watching 2m on the second SCU at the same time for
>  weak signal openings. The combinations are endless.
>  8. You could also monitor

Re: [Flexradio] Flex-6500 antenna port (s)

[Samuel Strongin]

Well said . Sam kf4yox

Sent from my iPhone

On May 26, 2012, at 12:53 PM, Brian Lloyd  wrote:

> On Sat, May 26, 2012 at 9:02 AM, Gerald Youngblood 
> wrote:
> 
>>  4. However, this SCU can connect to any one of ANT1, ANT2, RX IN A, or
>>  the XVTR port through a relay switching matrix.
>> 
> 
> Shakespeare was not entirely right when he wrote, "A Rose by any other name
> would smell as sweet." It turns out that we do apply biases based on the
> names we give things. Madison Avenue has figured that one out as we now
> see, "evaporated cane juice," on our product labels rather than, "sugar."
> 
> The problem here is that as soon as you name a connector "ANT" there is the
> perception that you are supposed to connect an antenna to it. Likewise when
> you name it "XVTR" the perception is that is where the transverter
> connects. The reality is, the 6x00 boxes all have 4 identical receiver
> inputs that you can use any way you like. Of course, this is confused by
> the fact that only two of them can be used as PA outputs as well. :-)
> 
> I have a 5000 and quickly realized that the myriad connectors, while
> seeming to be very flexible, were actually quite limited because, once your
> shack moves beyond a certain level of complexity, it becomes necessary to
> move the switching external to your receiver and exciter/transmitter. For
> example, consider the addition of a power amplifier. Once you add one you
> are forced to place the antenna switching after the amp. Flex got that with
> the addition of an external receive processing loop (RX1 in/RX1 out) but
> left out that you need the same loop for RX2 *AND* the transmitter if you
> are going to really make everything universal. So the solution is to do one
> of two things:
> 
>   1. Keep adding all kinds of switching to the radio itself, e.g. more
>   processing loops;
>   2. move all the switching to an external box or patch panel.
> 
> Personally, I think that Flex got the input/output switching perfect with
> the 1500. There is a combined RX/TX connector and then separate RX and TX
> connectors. It assumes external switching. Nothing to frustrate you because
> there is nothing to confuse or to present you with multiple combinations,
> none of which quite meet your needs. :-) You know ahead of time that you
> are going to have to come up with some other switching arrangement. No
> surprises.
> 
> So, here is hoping for a sensible external crossbar switch that will allow
> any combination of switching under software control (Ethernet/IP
> connection, please), with high (70+ dB) isolation. That is going to be much
> more flexible than any sort of switching one is going to put on the box
> itself.
> 
> -- 
> Brian Lloyd, WB6RQN/J79BPL
> 3191 Western Dr.
> Cameron Park, CA 95682
> br...@lloyd.com
> +1.767.617.1365 (Dominica)
> +1.916.877.5067 (USA)
> ___
> FlexRadio Systems Mailing List
> FlexRadio@flex-radio.biz
> http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz
> Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/
> Knowledge Base: http://kc.flexradio.com/  Homepage: http://www.flexradio.com/

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Re: [Flexradio] Flex-6500 antenna port (s)

[Chuck ONeal]

In a single SCU with let's say two slice receivers, one set to look at just 
the 160M band and the other set to look at 6M, how is the front end 
preselection done?  Would two band pass filters be put in "parallel" to 
handle the preselection for the two slice receivers' frequency ranges?  If 
so, what would happen if you used four slice receivers on 160, 80, 40, and 
20 M?  Would the front end being partially "open" on the lower frequencies 
affect the 20 M receiver?


Also, have the noisy Peregrine Semi PE 4259's used in the 5000 RFIO board 
been eliminated in the 6000?  Those things and their internal switching -Vcc 
supply produce an elevated noise floor due to harmonics appearing as 
unstable broad noise bumps seen across the MF to HF spectrum.  It does 
affect performance on 12 and 10 M to the extent that I use an external high 
gain preamp, turn off the internal preamp, and use the gain correction in 
the antenna tab to bring things back to calibration.  I'm in a VERY quiet 
location and am limited by atmospheric noise only.


Thanks!

Chuck K1KW




- Original Message - 
From: "Gerald Youngblood" 

To: "Dennis Petrich" 
Cc: 
Sent: Saturday, May 26, 2012 12:02 PM
Subject: Re: [Flexradio] Flex-6500 antenna port (s)


Dennis,

We are working on a diagram but let me try to explain in the interim.

Let's start with the FLEX-6500, which has a single SCU.

  1. A Spectral Capture Unit (SCU) digitizes the entire spectrum from 30
  KHz to 77 MHz in one swallow using a 245.76 Msps A/D converter.
  2. The SCU consists of the RF front end (preselectors, RF preamps,
  Nyquist filter, ADC, FPFA, and DSP) to capture and process that spectrum.
  3. This SCU can connect to only one antenna at a time because there is
  only a single RF to digital path.
  4. However, this SCU can connect to any one of ANT1, ANT2, RX IN A, or
  the XVTR port through a relay switching matrix.
  5. The Slice Receivers are full performance digital receivers that do
  direct digital down conversion to audio with independent demodulation,
  filtering, AGC, NR, etc. for each receiver.
  6. Each of the four Slice Receivers and their respective panadapters on
  the 6500 can be tuned independently and concurrently to any frequency and
  mode within the 77 MHz spectrum.  All receivers have the exact same high
   dynamic range performance.

Now to the FLEX-6700, which has two identical SCUs in parallel.

  1. With two SCUs we now have two independent RF to digital paths that
  can be connected to two independent antennas or can share one antenna
  through a RF power splitter.
  2. With two SCUs, one can be on ANT1 and the other on ANT2.  SCU B can
  receive on RX IN B while SCU A is transceiving on ANT1.  SCU B could
  alternately transceive on the XVTR port.
  3. With two SCUs and two antennas, we can do spatial diversity, beam
  forming and steering, noise mitigation, etc. that involves phasing the
  antennas in software.  Many customers enjoy this feature (ESC) today on 
the

  FLEX-5000 with RX2.
  4. With two SCUs, one can be connected to a narrow band StepIR for
  transceiver while the other is connected to a multi-band antenna watching
  for band openings or multipliers in a contest.
  5. With the additional signal processing on the 6700, you currently get
  up to a total of 8 Slice Receivers that can be used on a single SCU or
  allocated across both SCUs.
  6. The 6700 adds the option of tuning 135-165 MHz on either SCU.   Note
  that the 30 KHz to 77 MHz and 136-165 MHz ranges are mutually exclusive 
on

  a single SCU.  It requires two SCUs to use both ranges simultaneously.
  7. On the 6700, you might choose to monitor up to seven 2m repeaters on
  one SCU while working 20m with the other.  You could also monitor the 
10m,
  and 6m on one SCU while watching 2m on the second SCU at the same time 
for

  weak signal openings. The combinations are endless.
  8. You could also monitor the 50.110, 50.125 and six
  beacons simultaneously on 6m (the magic band).  You could even set some 
of

  the Slice Receivers to monitor MUF on signals below 6m or any other band
  for that matter.

I realize a diagram will be helpful but I hope that this clears up many of
the questions until we are able to publish more.

73,
Gerald


Gerald Youngblood, K5SDR
President and CEO
FlexRadio Systems(TM)
Email: ger...@flexradio.com
Web: www.flexradio.com <http://www.flex-radio.com/>

Tune In Excitement (TM)
PowerSDR(TM) is a trademark of FlexRadio Systems





On Sat, May 26, 2012 at 9:28 AM, Dennis Petrich 
wrote:



Hello Eric,



A friend and are now thoroughly confused on this whole antenna port
question….  In a recent email you say only one antenna to an SCU and in a
previous question I asked on the 24th you said I can have a receive 
antenna

connected as well as a main antenna ( I assume that means I can switch
between antennas  like on the 5000A)….  So which is it???

Re: [Flexradio] Flex-6500 antenna port (s)

[Brian Lloyd]

On Sat, May 26, 2012 at 9:02 AM, Gerald Youngblood wrote:

>   4. However, this SCU can connect to any one of ANT1, ANT2, RX IN A, or
>   the XVTR port through a relay switching matrix.
>

Shakespeare was not entirely right when he wrote, "A Rose by any other name
would smell as sweet." It turns out that we do apply biases based on the
names we give things. Madison Avenue has figured that one out as we now
see, "evaporated cane juice," on our product labels rather than, "sugar."

The problem here is that as soon as you name a connector "ANT" there is the
perception that you are supposed to connect an antenna to it. Likewise when
you name it "XVTR" the perception is that is where the transverter
connects. The reality is, the 6x00 boxes all have 4 identical receiver
inputs that you can use any way you like. Of course, this is confused by
the fact that only two of them can be used as PA outputs as well. :-)

I have a 5000 and quickly realized that the myriad connectors, while
seeming to be very flexible, were actually quite limited because, once your
shack moves beyond a certain level of complexity, it becomes necessary to
move the switching external to your receiver and exciter/transmitter. For
example, consider the addition of a power amplifier. Once you add one you
are forced to place the antenna switching after the amp. Flex got that with
the addition of an external receive processing loop (RX1 in/RX1 out) but
left out that you need the same loop for RX2 *AND* the transmitter if you
are going to really make everything universal. So the solution is to do one
of two things:

   1. Keep adding all kinds of switching to the radio itself, e.g. more
   processing loops;
   2. move all the switching to an external box or patch panel.

Personally, I think that Flex got the input/output switching perfect with
the 1500. There is a combined RX/TX connector and then separate RX and TX
connectors. It assumes external switching. Nothing to frustrate you because
there is nothing to confuse or to present you with multiple combinations,
none of which quite meet your needs. :-) You know ahead of time that you
are going to have to come up with some other switching arrangement. No
surprises.

So, here is hoping for a sensible external crossbar switch that will allow
any combination of switching under software control (Ethernet/IP
connection, please), with high (70+ dB) isolation. That is going to be much
more flexible than any sort of switching one is going to put on the box
itself.

-- 
Brian Lloyd, WB6RQN/J79BPL
3191 Western Dr.
Cameron Park, CA 95682
br...@lloyd.com
+1.767.617.1365 (Dominica)
+1.916.877.5067 (USA)
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Re: [Flexradio] Flex-6500 antenna port (s)

[Gerald Youngblood]

Dennis,

We are working on a diagram but let me try to explain in the interim.

Let's start with the FLEX-6500, which has a single SCU.

   1. A Spectral Capture Unit (SCU) digitizes the entire spectrum from 30
   KHz to 77 MHz in one swallow using a 245.76 Msps A/D converter.
   2. The SCU consists of the RF front end (preselectors, RF preamps,
   Nyquist filter, ADC, FPFA, and DSP) to capture and process that spectrum.
   3. This SCU can connect to only one antenna at a time because there is
   only a single RF to digital path.
   4. However, this SCU can connect to any one of ANT1, ANT2, RX IN A, or
   the XVTR port through a relay switching matrix.
   5. The Slice Receivers are full performance digital receivers that do
   direct digital down conversion to audio with independent demodulation,
   filtering, AGC, NR, etc. for each receiver.
   6. Each of the four Slice Receivers and their respective panadapters on
   the 6500 can be tuned independently and concurrently to any frequency and
   mode within the 77 MHz spectrum.  All receivers have the exact same high
dynamic range performance.

Now to the FLEX-6700, which has two identical SCUs in parallel.

   1. With two SCUs we now have two independent RF to digital paths that
   can be connected to two independent antennas or can share one antenna
   through a RF power splitter.
   2. With two SCUs, one can be on ANT1 and the other on ANT2.  SCU B can
   receive on RX IN B while SCU A is transceiving on ANT1.  SCU B could
   alternately transceive on the XVTR port.
   3. With two SCUs and two antennas, we can do spatial diversity, beam
   forming and steering, noise mitigation, etc. that involves phasing the
   antennas in software.  Many customers enjoy this feature (ESC) today on the
   FLEX-5000 with RX2.
   4. With two SCUs, one can be connected to a narrow band StepIR for
   transceiver while the other is connected to a multi-band antenna watching
   for band openings or multipliers in a contest.
   5. With the additional signal processing on the 6700, you currently get
   up to a total of 8 Slice Receivers that can be used on a single SCU or
   allocated across both SCUs.
   6. The 6700 adds the option of tuning 135-165 MHz on either SCU.   Note
   that the 30 KHz to 77 MHz and 136-165 MHz ranges are mutually exclusive on
   a single SCU.  It requires two SCUs to use both ranges simultaneously.
   7. On the 6700, you might choose to monitor up to seven 2m repeaters on
   one SCU while working 20m with the other.  You could also monitor the 10m,
   and 6m on one SCU while watching 2m on the second SCU at the same time for
   weak signal openings. The combinations are endless.
   8. You could also monitor the 50.110, 50.125 and six
   beacons simultaneously on 6m (the magic band).  You could even set some of
   the Slice Receivers to monitor MUF on signals below 6m or any other band
   for that matter.

I realize a diagram will be helpful but I hope that this clears up many of
the questions until we are able to publish more.

73,
Gerald


Gerald Youngblood, K5SDR
President and CEO
FlexRadio Systems(TM)
Email: ger...@flexradio.com
Web: www.flexradio.com 

Tune In Excitement (TM)
PowerSDR(TM) is a trademark of FlexRadio Systems





On Sat, May 26, 2012 at 9:28 AM, Dennis Petrich wrote:

> Hello Eric,
>
>
>
> A friend and are now thoroughly confused on this whole antenna port
> question….  In a recent email you say only one antenna to an SCU and in a
> previous question I asked on the 24th you said I can have a receive antenna
> connected as well as a main antenna ( I assume that means I can switch
> between antennas  like on the 5000A)….  So which is it???
>
>
>
> On this whole question regarding antenna inputs could someone at Flex
> PLEASE
> draw a diagram!!
>
>
>
> “6. An SCU must be connected to one and only one antenna port.  So if you
> have two SCUs (FLEX-6700) you can place slice receivers on two antennas 7.
> Slice receivers may be placed on any SCU.  This means that you may have all
> eight slice receivers on a single SCU (and therefore antenna) if you
> desire.”
>
>
>
> “Yes.  You can use any of the 4 antenna inputs for reception on the 6500
> (ANT 1, ANT 2, RX ANT A-In, and XVTR).  Note that on the 6700, each SCU has
> 4 options for receive antennas (SCU-1 would use RX ANT A-In, SCU-2 would
> use
> RX ANT B-In).”
>
>
>
> Eric Wachsmann
> FlexRadio Systems
>
>
>
> 73’s
>
>
>
> Dennis KØEOO
>
>
>
>
>
>  _
>
> From: Eric Wachsmann [mailto:e...@flex-radio.com]
> Sent: Tuesday, May 22, 2012 12:59 PM
> To: radio...@frontiernet.net
> Cc: flexradio@flex-radio.biz
> Subject: Re: Flex-6500 antenna port (s)
>
>
>
> On Tue, May 22, 2012 at 12:50 PM,  wrote:
>
> I have a question regarding the receive antenna inputs for the 6500.  Can I
> have my transmit antenna connected to one of the ANT1 or ANT2 ports and
> have
> a receiving antenna connected to one of the RX ANT IN/OUT ports??  Thats on
> the 6500
>
> Than

Re: [Flexradio] Flex-6500 antenna port (s)

[Dennis Petrich]

Hello Eric,

 

A friend and are now thoroughly confused on this whole antenna port
question….  In a recent email you say only one antenna to an SCU and in a
previous question I asked on the 24th you said I can have a receive antenna
connected as well as a main antenna ( I assume that means I can switch
between antennas  like on the 5000A)….  So which is it???

 

On this whole question regarding antenna inputs could someone at Flex PLEASE
draw a diagram!!

 

“6. An SCU must be connected to one and only one antenna port.  So if you
have two SCUs (FLEX-6700) you can place slice receivers on two antennas 7.
Slice receivers may be placed on any SCU.  This means that you may have all
eight slice receivers on a single SCU (and therefore antenna) if you
desire.”

 

“Yes.  You can use any of the 4 antenna inputs for reception on the 6500
(ANT 1, ANT 2, RX ANT A-In, and XVTR).  Note that on the 6700, each SCU has
4 options for receive antennas (SCU-1 would use RX ANT A-In, SCU-2 would use
RX ANT B-In).”



Eric Wachsmann
FlexRadio Systems

 

73’s

 

Dennis KØEOO

 

 

  _  

From: Eric Wachsmann [mailto:e...@flex-radio.com] 
Sent: Tuesday, May 22, 2012 12:59 PM
To: radio...@frontiernet.net
Cc: flexradio@flex-radio.biz
Subject: Re: Flex-6500 antenna port (s)

 

On Tue, May 22, 2012 at 12:50 PM,  wrote:

I have a question regarding the receive antenna inputs for the 6500.  Can I
have my transmit antenna connected to one of the ANT1 or ANT2 ports and have
a receiving antenna connected to one of the RX ANT IN/OUT ports??  Thats on
the 6500

Thanks in advance for any assistance.

Dennis KØEOO


Yes.  You can use any of the 4 antenna inputs for reception on the 6500 (ANT
1, ANT 2, RX ANT A-In, and XVTR).  Note that on the 6700, each SCU has 4
options for receive antennas (SCU-1 would use RX ANT A-In, SCU-2 would use
RX ANT B-In).


Eric Wachsmann
FlexRadio Systems

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Re: [Flexradio] Flex-6500 antenna port (s)

[Eric Wachsmann]

On Tue, May 22, 2012 at 12:50 PM,  wrote:

> I have a question regarding the receive antenna inputs for the 6500.  Can
> I have my transmit antenna connected to one of the ANT1 or ANT2 ports and
> have a receiving antenna connected to one of the RX ANT IN/OUT ports??
>  Thats on the 6500
>
> Thanks in advance for any assistance.
>
> Dennis KØEOO
>

Yes.  You can use any of the 4 antenna inputs for reception on the 6500
(ANT 1, ANT 2, RX ANT A-In, and XVTR).  Note that on the 6700, each SCU has
4 options for receive antennas (SCU-1 would use RX ANT A-In, SCU-2 would
use RX ANT B-In).


Eric Wachsmann
FlexRadio Systems
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[Flexradio] Flex-6500 antenna port (s)

[radioart]

I have a question regarding the receive antenna inputs for the 6500.  Can I 
have my transmit antenna connected to one of the ANT1 or ANT2 ports and have a 
receiving antenna connected to one of the RX ANT IN/OUT ports??  Thats on the 
6500

Thanks in advance for any assistance.

Dennis KØEOO
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