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Re: OFCOM Test Equipment auction
There's a real "must have" scope on there, just £55 at the minute.
http://www2.ppauctions.com/lot.php?l_id=95734&id=185&search=&cat=all&perPage=20&sort=2&thisPage=5
with a mere 8 bidders. But I'm
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There's a real "must have" scope on there, just £55 at the minute.
http://www2.ppauctions.com/lot.php?l_id=95734&id=185&search=&cat=all&perPage=20&sort=2&thisPage=5
with a mere 8 bidders. But I'm
|
By
Dr. David Kirkby (Kirkby Microwave Ltd) <drkirkby@...>
·
#40972
·
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Re: OFCOM Test Equipment auction
I am going to view the auction bits on Tuesday. If anyone wants me to check out (as possible) a particular item. Please contact me via email
Roger
G8CUB
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I am going to view the auction bits on Tuesday. If anyone wants me to check out (as possible) a particular item. Please contact me via email
Roger
G8CUB
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By
Roger Ray
·
#40971
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Rotator speed control
I have just bought a used G1000S rotator and the controller does not have a speed control, it is far too fast! As I already have an ERC-4 kit I don't want to build an Arduino type controller but want
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I have just bought a used G1000S rotator and the controller does not have a speed control, it is far too fast! As I already have an ERC-4 kit I don't want to build an Arduino type controller but want
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By
Conrad, PA5Y
·
#40970
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Re: Ft726 as 23cm Driver
Sounds like a good solution Ian, I'm running mine with my FT847 and it works a treat.
Best Regards
Tim Hague
|
Sounds like a good solution Ian, I'm running mine with my FT847 and it works a treat.
Best Regards
Tim Hague
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By
Tim Hague M0AFJ
·
#40969
·
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Re: programming the ADF 4351
Mike
see attached
73Barry, G8AGN
On 29/10/2016 23:34, mb.golfmad@... [ukmicrowaves] wrote:
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Mike
see attached
73Barry, G8AGN
On 29/10/2016 23:34, mb.golfmad@... [ukmicrowaves] wrote:
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By
Barry Chambers
·
#40968
·
|
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Re: programming the ADF 4351
You may wish to consider an Arduino instead of a PIC.
Very easy to program from a P.C. and programs (called sketches) alreadyexist which can easily be adapted to what you want. Arduinos cost very
|
You may wish to consider an Arduino instead of a PIC.
Very easy to program from a P.C. and programs (called sketches) alreadyexist which can easily be adapted to what you want. Arduinos cost very
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By
Pete - GM4BYF
·
#40967
·
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programming the ADF 4351
I recently acquired an ADF4351 evaluation board..the black one as recommended by Andy G4JNT.
The thing is I would like to use it as a LO source for my DB6NT 13cm transceiver. My thoughts are to be
|
I recently acquired an ADF4351 evaluation board..the black one as recommended by Andy G4JNT.
The thing is I would like to use it as a LO source for my DB6NT 13cm transceiver. My thoughts are to be
|
By
mike G6TRM
·
#40966
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Ft726 as 23cm Driver
Hi guys, Whats anyones thoughts on using one of my spare Ft726's as driver rig for the Sglabs transverter, The 2m Module in the Ft726 can have links changed to give 146mhz so can change the IF on the
|
Hi guys, Whats anyones thoughts on using one of my spare Ft726's as driver rig for the Sglabs transverter, The 2m Module in the Ft726 can have links changed to give 146mhz so can change the IF on the
|
By
ian hope (2E0IJH)
·
#40965
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Re: Return loss measurement at 2-4GHz?
Thanks for the tip Andy, I had a look earlier at the HMC802 but it isn't clear whether it can operate in differential mode. It is rated up to 8GHz. Also looked at the ADL5513, but that is
|
Thanks for the tip Andy, I had a look earlier at the HMC802 but it isn't clear whether it can operate in differential mode. It is rated up to 8GHz. Also looked at the ADL5513, but that is
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By
Neil Smith G4DBN
·
#40964
·
|
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Re: Return loss measurement at 2-4GHz?
The AD8313 Log detector chip operates over 100MHz to 2.5GHz and has differential inputs - making it possible to directly connect to a resistive return loss bridge to measure Vref without the
|
The AD8313 Log detector chip operates over 100MHz to 2.5GHz and has differential inputs - making it possible to directly connect to a resistive return loss bridge to measure Vref without the
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By
Andy G4JNT
·
#40963
·
|
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Re: Return loss measurement at 2-4GHz?
Probably the most important item to own if you want to make return loss measurements - even if you own a network analyser - is good a set of calibration standards: a good load, and open and
|
Probably the most important item to own if you want to make return loss measurements - even if you own a network analyser - is good a set of calibration standards: a good load, and open and
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By
Christopher Bartram <cbartram@...>
·
#40962
·
|
|
Re: Return loss measurement at 2-4GHz?
Thanks Doug and Sam, I was bamboozled by glossy VNA adverts and forgot the basics.
I found an HP797D that is supposed to do 26dB directivity and -20dB coupling from 1.9 to 4.1GHz.
|
Thanks Doug and Sam, I was bamboozled by glossy VNA adverts and forgot the basics.
I found an HP797D that is supposed to do 26dB directivity and -20dB coupling from 1.9 to 4.1GHz.
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By
Neil Smith G4DBN
·
#40961
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Re: Return loss measurement at 2-4GHz?
Just to add to what Doug says. There are lots of directional couplers out there, but do not confuse these with the single port 'samplers'. These often have poor directivity as they are designed for
|
Just to add to what Doug says. There are lots of directional couplers out there, but do not confuse these with the single port 'samplers'. These often have poor directivity as they are designed for
|
By
SAM JEWELL
·
#40960
·
|
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Re: Return loss measurement at 2-4GHz?
Hello Neil.
What about a good old coaxial directional coupler, e.g. Narda or other brand from the surplus market?
Such things are available with 'N' or SMA connectors and are
|
Hello Neil.
What about a good old coaxial directional coupler, e.g. Narda or other brand from the surplus market?
Such things are available with 'N' or SMA connectors and are
|
By
DougF VK4OE
·
#40959
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Return loss measurement at 2-4GHz?
Not having the luxury of a microwave VNA, what is the best way to measure return loss in the 2-4GHz range? I've seen some designs using a BGA log detector chip and 0402 SMD bridge components, and
|
Not having the luxury of a microwave VNA, what is the best way to measure return loss in the 2-4GHz range? I've seen some designs using a BGA log detector chip and 0402 SMD bridge components, and
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By
Neil Smith G4DBN
·
#40958
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Re: Right Angled SMA at 10GHz
Hi Group
Tryhttp://www.coax-connectors.com/ They stock good quality connectors and cables. They are a UK company with good stocks.
No connection with them other than a happy customer. Ask to
|
Hi Group
Tryhttp://www.coax-connectors.com/ They stock good quality connectors and cables. They are a UK company with good stocks.
No connection with them other than a happy customer. Ask to
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By
Keith D. Le Boutillier <keithl@...>
·
#40957
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Re: Right Angled SMA at 10GHz
Beyond the 1/4 inch semi rigid you might as well look at LDF-250, LDF-450, LDF-550 and LDF-750.
I have some of the 1/4 inch solid outer semi-rigid and hand-formable braided outer cable. The solid
|
Beyond the 1/4 inch semi rigid you might as well look at LDF-250, LDF-450, LDF-550 and LDF-750.
I have some of the 1/4 inch solid outer semi-rigid and hand-formable braided outer cable. The solid
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By
Mike Willis
·
#40956
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Re: Right Angled SMA at 10GHz
Micro-Coax do list UT325 and UT390 on their web site - data can be found at:
http://www.micro-coax.com/products/cable/semi-rigid/
I don't recollect seeing either of these sizes though.
|
Micro-Coax do list UT325 and UT390 on their web site - data can be found at:
http://www.micro-coax.com/products/cable/semi-rigid/
I don't recollect seeing either of these sizes though.
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By
John Quarmby
·
#40955
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Re: Right Angled SMA at 10GHz
may be wrong but I'm sure there is some larger diameter semi rigid ..... dammed expensive no doubt ....
Can anyone confirm >?
|
may be wrong but I'm sure there is some larger diameter semi rigid ..... dammed expensive no doubt ....
Can anyone confirm >?
|
By
GORDONJ REASON <gordonj.reason@...>
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#40954
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Re: 122GHz
Hi all
Thank you for the link to siliconradarlooking at one of the dater sheets
one of there TX / RX unites looks like it willwork on 135 Ghs
Also one of the 122 Ghz units might beused on 135
|
Hi all
Thank you for the link to siliconradarlooking at one of the dater sheets
one of there TX / RX unites looks like it willwork on 135 Ghs
Also one of the 122 Ghz units might beused on 135
|
By
Paul G8KFW
·
#40953
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