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Brian Howie GM4DIJ
 

Is it my e-mail client or are people modifying subject lines to create new topics ? The oxco thread is being threaded with the PG102 one.

Message-ID: <1670784016.5299960.1609243973891@mail.yahoo.com>
In-Reply-To: <NchP.1609239978902492360.Q4ZP@groups.io>
References: <NchP.1609239978902492360.Q4ZP@groups.io>

Cheers

Brian GM4DIJ
--
Brian Howie


Re: ocxo ?

Adrian G4UVZ
 

I recently purchased this unit on Ebay for the GB3KBQ upgrade .....tunes equally either side of 10 MHz ..good quality item

uk/itm/10MHz-Frequency-OCXO-Board-Constant-Temperature-Crystal-Oscillator-Sine-Wave/283995359041?_trkparms=aid%3D111001%26algo%3DREC.SEED%26ao%3D1%26asc%3D20160908105057%26meid%3D396db80303b54452b2e3680930c9349b%26pid%3D100675%26rk%3D1%26rkt%3D15%26mehot%3Dnone%26sd%3D283995359041%26itm%3D283995359041%26pmt%3D1%26noa%3D1%26pg%3D2380057%26brand%3DUnbranded&_trksid=p2380057.c100675.m4236&_trkparms=pageci%3A3a3c0491-49fc-11eb-9aff-fa637c2bc1bd%7Cparentrq%3Aaf9194511760a4d729840e43ffd9c852%7Ciid%3A1


Re: ocxo ?

Chris Ruddy MM0KOS
 

Hi Ben

 

Someone else had tried the same thing, you can read here... https://groups.io/g/qrp-tech/topic/26199901#17701

 

Chris MM0KOS

 

Sent from Mail for Windows 10

 

From: militaryoperator via groups.io
Sent: 29 December 2020 12:13
To: UKMicrowaves@groups.io
Subject: [UKMicrowaves] ocxo ?

 

Thinking of adding an ext ref to my Kuhne, 

 

has anyone tried this: OSC5A2B02 OCXO  ?

its a little smaller than the ones I have already and available on a pcb on eBay. 

 

Ben

 

https://dl6gl.de/media/files/ocxo-cti-osc5a2b02-datasheet.pdf

 

 

--------------------------------------

Curator, Owner and Display coordinator

Military Wireless Museum

Kidderminster, UK.

 

This message was meant for the recipient

Any likeness to persons living or dead is odd

---------------------------------------

 

 

 


ocxo ?

militaryoperator
 

Thinking of adding an ext ref to my Kuhne, 

has anyone tried this: OSC5A2B02 OCXO  ?

its a little smaller than the ones I have already and available on a pcb on eBay. 

Ben

https://dl6gl.de/media/files/ocxo-cti-osc5a2b02-datasheet.pdf


--------------------------------------
Curator, Owner and Display coordinator
Military Wireless Museum
Kidderminster, UK.

This message was meant for the recipient
Any likeness to persons living or dead is odd
---------------------------------------



Farnell PG102 manual

Lou Blasco
 

Hi All,

Per chance would anyone have an electronic copy of a user or service manual for a Farnell PG102 they'd be willing to share?
--
Regards

Lou
VK3ALB


Re: QO100 JT9E-Fast

Keith Le Boutillier
 

Hi Andy

 

Thanks for the fun this afternoon. I had never used JT9 before so a crash course

In setting things up but decoding your QO-100 just fine.

 

73 & Happy New Year

 

Keith GU6EFB

 

 

 

Sent from Mail for Windows 10

 

From: Andy G4JNT
Sent: 28 December 2020 13:06
To: UK Microwaves groups.io
Subject: [UKMicrowaves] QO100 JT9E-Fast

 

Anyone at a loose end and wants to play around ...

QO100 WSJT-X, one of the  Fast modes

 

Freq - 10489.9824 MHz   at the top in the "play around with dig modes" section

Mode - JT9E-Fast   15s cycle

 

The frequency may drfit a bit - it's only a TCXO

 

Low power, on the threshold for my 0.7m dish, but can attenuate more for anyone who wants

I'll leave it running for a while

 

 


Re: QO100 JT9E-Fast

Andy G4JNT
 

It's about 13dBW EIRP.    300mW PA to an 18dBi (ish)  helical 

JT9E-Fast is generated from an LMX2541 synth.  The controller is in free run, no GPS timing, although I did start it running more-or-less synchronous with a 15s boundary.   The Fast modes just repeat the frame throughput the Tx cycle, and  although the WSJT-X software uses  timing slots, it doesn't care over-much where a burst of signal occurs inside the slot.



On Mon, 28 Dec 2020 at 16:06, Denis Stanton G0OLX <Stantondenis@...> wrote:
Andy
Receiving you via goonhilly web sdr -3-5db 
160400 -3 5.9  840 @ G4JNT JT9FAST
Best 73’s
Denis
G0OLX


On 28 Dec 2020, at 15:49, John Fell <john.g0api@...> wrote:



154815 -13 0.9 888 @ G4JNT JT9FAST


John

G0API


Sounds like an old wheel barrow needing oil.


On Mon, 28 Dec 2020 at 13:06, Andy G4JNT <andy.g4jnt@...> wrote:
Anyone at a loose end and wants to play around ...
QO100 WSJT-X, one of the  Fast modes

Freq - 10489.9824 MHz   at the top in the "play around with dig modes" section
Mode - JT9E-Fast   15s cycle

The frequency may drfit a bit - it's only a TCXO

Low power, on the threshold for my 0.7m dish, but can attenuate more for anyone who wants
I'll leave it running for a while


Re: QO100 JT9E-Fast

John Fell
 

JT9E Fast

G0API

On Mon, 28 Dec 2020 at 13:06, Andy G4JNT <andy.g4jnt@...> wrote:
Anyone at a loose end and wants to play around ...
QO100 WSJT-X, one of the  Fast modes

Freq - 10489.9824 MHz   at the top in the "play around with dig modes" section
Mode - JT9E-Fast   15s cycle

The frequency may drfit a bit - it's only a TCXO

Low power, on the threshold for my 0.7m dish, but can attenuate more for anyone who wants
I'll leave it running for a while


Re: QO100 JT9E-Fast

Denis Stanton G0OLX
 

Andy
Receiving you via goonhilly web sdr -3-5db 
160400 -3 5.9  840 @ G4JNT JT9FAST
Best 73’s
Denis
G0OLX


On 28 Dec 2020, at 15:49, John Fell <john.g0api@...> wrote:



154815 -13 0.9 888 @ G4JNT JT9FAST


John

G0API


Sounds like an old wheel barrow needing oil.


On Mon, 28 Dec 2020 at 13:06, Andy G4JNT <andy.g4jnt@...> wrote:
Anyone at a loose end and wants to play around ...
QO100 WSJT-X, one of the  Fast modes

Freq - 10489.9824 MHz   at the top in the "play around with dig modes" section
Mode - JT9E-Fast   15s cycle

The frequency may drfit a bit - it's only a TCXO

Low power, on the threshold for my 0.7m dish, but can attenuate more for anyone who wants
I'll leave it running for a while


Re: QO100 JT9E-Fast

John Fell
 

154815 -13 0.9 888 @ G4JNT JT9FAST


John

G0API


Sounds like an old wheel barrow needing oil.


On Mon, 28 Dec 2020 at 13:06, Andy G4JNT <andy.g4jnt@...> wrote:
Anyone at a loose end and wants to play around ...
QO100 WSJT-X, one of the  Fast modes

Freq - 10489.9824 MHz   at the top in the "play around with dig modes" section
Mode - JT9E-Fast   15s cycle

The frequency may drfit a bit - it's only a TCXO

Low power, on the threshold for my 0.7m dish, but can attenuate more for anyone who wants
I'll leave it running for a while


QO100 JT9E-Fast

Andy G4JNT
 

Anyone at a loose end and wants to play around ...
QO100 WSJT-X, one of the  Fast modes

Freq - 10489.9824 MHz   at the top in the "play around with dig modes" section
Mode - JT9E-Fast   15s cycle

The frequency may drfit a bit - it's only a TCXO

Low power, on the threshold for my 0.7m dish, but can attenuate more for anyone who wants
I'll leave it running for a while


Re: OT: Question: inexpensive Gigatronics 26GHz Signal Generator, can it be modified to go up to 40GHz ?

Iain Crawford
 

No. You'll need to get an external harmonic mixer (e.g. something like the HP 11970A).


OT: Question: inexpensive Gigatronics 26GHz Signal Generator, can it be modified to go up to 40GHz ?

green
 


There is a working Gigatronics 1026   26GHz Signal Generator 
  up on eBay that is inexpensive:

Can it be modified to get up to 40GHz or beyond ?

https://www.ebay.com/itm/Gigatronics-1026-Synthesized-26-GHz-Signal-Generator-f-Counter-Power-Meter/154257335414?epid=1000617353&hash=item23ea742476:g:T3cAAOSwbI9eKQz9 

thank you,


Re: Chinese ADF4351 signal source

Richard Ferryman
 

I had to borrow a neighbours young daughter to use the microscope as my eyes are no longer useful for anything smaller than a klystron.
The chinese do believe in being simple.  The SMA MCLK pin is fed from the oscillator via a 0 ohms resistor.  The ADF4351 ref in (pin 29) has a capacitor and 0 ohms in series also to the oscillator.  Now I need to teach my assistant hoiw to solder..........
Dick


Re: Chinese ADF4351 signal source

Robin Szemeti - G1YFG
 

Check the value of the charge pump resistor also

On Sat, 26 Dec 2020 at 11:58, Andy G4JNT <andy.g4jnt@...> wrote:
I just took delivery of an ADF5355 synth (against all my principles, from China) and it had the same really poor 25MHz CXO on board.   I tried it, before doing the mod and it was unbelievably off freq - some 1000 ppm.

After converting for external 10MHz source (which is not really optimum frequency for that chip, but does work if you enable the ref-doubler) seems to work fine, but will benefit from the DC supply decoupling mods.



On Sat, 26 Dec 2020 at 11:54, Andy Talbot <andy.g4jnt@...> wrote:
You have to remove the L feeding DC to the on board OCXO.   Then move a link or two to get your external input



On Sat, 26 Dec 2020 at 11:41, Richard Ferryman via groups.io <g4bbh=btinternet.com@groups.io> wrote:
The main problem I have with this module is that it does not have an input for external 25MHz source.  There is an SMA connctor marked MCLK but this turns out to be an output from the internal (crap) 25MHz reference which is a mile off 25MHz and not very clean..
Otherwise ist seems useable.
Dick


--
Robin Szemeti - G1YFG


Re: Chinese ADF4351 signal source

Andy G4JNT
 

I just took delivery of an ADF5355 synth (against all my principles, from China) and it had the same really poor 25MHz CXO on board.   I tried it, before doing the mod and it was unbelievably off freq - some 1000 ppm.

After converting for external 10MHz source (which is not really optimum frequency for that chip, but does work if you enable the ref-doubler) seems to work fine, but will benefit from the DC supply decoupling mods.



On Sat, 26 Dec 2020 at 11:54, Andy Talbot <andy.g4jnt@...> wrote:
You have to remove the L feeding DC to the on board OCXO.   Then move a link or two to get your external input



On Sat, 26 Dec 2020 at 11:41, Richard Ferryman via groups.io <g4bbh=btinternet.com@groups.io> wrote:
The main problem I have with this module is that it does not have an input for external 25MHz source.  There is an SMA connctor marked MCLK but this turns out to be an output from the internal (crap) 25MHz reference which is a mile off 25MHz and not very clean..
Otherwise ist seems useable.
Dick


Re: Chinese ADF4351 signal source

Andy G4JNT
 

You have to remove the L feeding DC to the on board OCXO.   Then move a link or two to get your external input



On Sat, 26 Dec 2020 at 11:41, Richard Ferryman via groups.io <g4bbh=btinternet.com@groups.io> wrote:
The main problem I have with this module is that it does not have an input for external 25MHz source.  There is an SMA connctor marked MCLK but this turns out to be an output from the internal (crap) 25MHz reference which is a mile off 25MHz and not very clean..
Otherwise ist seems useable.
Dick


Re: Chinese ADF4351 signal source

Richard Ferryman
 

The main problem I have with this module is that it does not have an input for external 25MHz source.  There is an SMA connctor marked MCLK but this turns out to be an output from the internal (crap) 25MHz reference which is a mile off 25MHz and not very clean..
Otherwise ist seems useable.
Dick


Re: Auction ripoffs

Andy
 

On 25/12/2020 17:09, militaryoperator via groups.io wrote:
Postage should always be charged VAT in the UK, it's the law.    There is no VAT on postage stamps through the Royal Mail, but even so, suppliers should always charge VAT on postage and packing.
------------------
> Why does postage get charged VAT?
Because it's the law.
----------------------------------------
Wow, fantastic that so many are keen on supporting the law.
Obviously, I am in the singularity of thinking if one pays someone for doing something, ie providing a delivery service, then giving the taxman something for nothing seems odd.
You can read the government web site pages about VAT if you want but this from another site summarises it succinctly.

Delivered goods plus postage
When you supply goods by post it counts as a single composite supply for VAT purposes. That means the postage is part of the total cost of the goods and so the VAT rate applicable includes the postage.
It's not a matter of whether I agree with the law or not, it's the law which is what you have been told. If you don't agree with the law, you should take it up with the government and not pick at people telling you what the law is.


Re: Auction ripoffs

militaryoperator
 

Postage should always be charged VAT in the UK, it's the law.    There is no VAT on postage stamps through the Royal Mail, but even so, suppliers should always charge VAT on postage and packing.
------------------
> Why does postage get charged VAT?
Because it's the law.
----------------------------------------


Wow, fantastic that so many are keen on supporting the law. 

Obviously, I am in the singularity of thinking if one pays someone for doing something, ie providing a delivery service, then giving the taxman something for nothing seems odd. 

I must bear that in mind next time eBay charges me for posting someone else's bit of tat. 

Have a nice Xmas. 

Ben

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