Date   

Re: OT - 144 MHz TDK circulator wanted

cor
 

Hello Conrad,
 
Is this what you are looking for?
 
HNY, Cor PA0P
 
 
 

Sent: Saturday, January 04, 2020 2:22 PM
Subject: [UKMicrowaves] OT - 144 MHz TDK circulator wanted
 

Hello all,

 

Sometime ago there were some TDK circulators for 2m doing the rounds, they were good for 150W on 144 MHz. I gave mine to the GB3VHF boys 😉 Anyway I am looking for 2 more, please check your junk boxes.

 

Many thanks and HNY.

 

Conrad PA5Y


OT - 144 MHz TDK circulator wanted

Conrad, PA5Y
 

Hello all,

 

Sometime ago there were some TDK circulators for 2m doing the rounds, they were good for 150W on 144 MHz. I gave mine to the GB3VHF boys 😉 Anyway I am looking for 2 more, please check your junk boxes.

 

Many thanks and HNY.

 

Conrad PA5Y


Re: DB6NT Beacon Sender

Andy G4JNT
 

John, G8ACE did an updated version of the DDK004 multiplier, 2.3 - 2.7GHz out 108 (ish)MHz external source input .    
PCBs may still be around



On Sat, 4 Jan 2020 at 12:14, Bo, OZ2M <groups.io@...> wrote:
Hello

We bought an assembled beacon multiplier unit, MKU 10 BAKE opt. 01, for OZ7IGY back in February 2014 for 270 EUR. The fully mounted unit with the oscillator components was 350 EUR Attached are the schematic and a modification description for x32 use that is used at OZ7IGY.

HNY
Bo




Re: DB6NT Beacon Sender

Bo, OZ2M
 

Just discovered that the 6 cm beacon multiplier PCB was 26 EUR. Only the PCB was available for the 6 cm multiplier. Eisch Kafka had all the parts.


Re: DB6NT Beacon Sender

Bo, OZ2M
 

Hello

We bought an assembled beacon multiplier unit, MKU 10 BAKE opt. 01, for OZ7IGY back in February 2014 for 270 EUR. The fully mounted unit with the oscillator components was 350 EUR Attached are the schematic and a modification description for x32 use that is used at OZ7IGY.

HNY
Bo


Re: Siglent, Telonic, Lab

alwyn.seeds1
 

Dear Ian,

Phase noise performance is what you pay for in spectrum analysers. The performance numbers for an HP8560E series analyser are much better than the Siglent. These HP analysers show up regularly on e-bay and a good sample should give you years of service. At work, we still have loads of them in use and Keysight repair and calibrate them, though not at amateur prices. Manuals are readily available, including detailed service manuals from Artek, that are invaluable for repairs. The construction is rather compact- as they were designed for US Army field maintenance applications, but repairs are manageable with care. The most common failures are blown mixers (expensive, so check before purchase) and short circuit tantalum bead capacitors.

Because large numbers were made, getting spares from scrap units is still reasonably possible.

Even larger numbers of the HP8590E series are available; lower spec. but still better than the Siglent.

As with anything e-bay caveat emptor applies, but I have bought several 8560 and 8590 over the last 10 years and they have all been great value for money.

Regards,

Alwyn
   
_____________________________________________________

Alwyn Seeds, Director
SynOptika Ltd.,
114 Beaufort Street,
London,
SW3 6BU,
England.


SynOptika Ltd., Registered in England and Wales: No. 04606737
Registered Office: 114 Beaufort Street, London, SW3 6BU, United Kingdom.
_____________________________________________________


Re: Siglent, Telonic, Lab

Paul Phillips
 

Hi Ian,

I bought a Siglent oscilloscope from Telonic in November as a gift for my son.  We haven't had any service issues (yet) but I spoke to them by telephone beforehand and they were quite helpful - helpful enough to make me decide to buy from them rather than one of the other possible ways of acquiring these things.

I was quite impressed by the oscilloscope's performance.  I am experienced with plenty of test equipment from, for example HP (Agilent / Keysight etc), Tektronix and LeCroy and they are generally very good (of course),  However, I honestly can't see why you would spend double or more on the same capability when stuff like Siglent is available at a much lower cost.  I don't have any experience of Siglent spectrum analysers but Chris G3WIE gave a talk at my radio club recently and he brought along his Siglent spectrum analyser.  He seemed happy enough with it and it appeared to do its job perfectly adequately (which, in this case, was looking at spurs from a 4m transverter).

If you are comparing buying new from Siglent or used from, say, HP or Tek I would say that the new equipment has the advantages of being much smaller and lighter, a nicer screen and can easily generate data and screen shots.  Not to mention warranty, serviceability etc.  I have bought a fair amount of used equipment in the past to avoid the very high costs of new test equipment, but these days you would have to think quite hard about these lower cost offerings, unless you really need top end performance.

Hope this helps.

73,

Paul G4KZY

Good luck with your


Re: Siglent, Telonic, Lab

Paul G8KFW
 

Hi Ian

 

Are you thinking of new or used ?

 

The price of used test equipment over 20 years old can reflect the serviceability / availability of service manuals

 

The old Telonic equipment I have handled was quite simple  inside but never found any service manuals so quickly moved it on

Similarly the Labtronix gear I have used performed to its speck but never had to repair one but also never hade the service manual

 

Best advise is to look at the most common equipment that will do the job you want to do

 

Glad to help of line

 

Regards Paul   mainly into HP , EIP , Marconi and Tek 

 


From: UKMicrowaves@groups.io [mailto:UKMicrowaves@groups.io] On Behalf Of Ian White
Sent: 03 January 2020 19:03
To: RSGB-Workshop@groups.io; UKMicrowaves@groups.io
Subject: [UKMicrowaves] Siglent, Telonic, Lab

 

Any views, please, about Siglent spectrum analysers?

Also, any experience about Telonic versus Labtronix as the UK dealer - thinking particularly about support?

-- 
73 from Ian GM3SEK

No virus found in this message.
Checked by AVG - www.avg.com
Version: 2016.0.8048 / Virus Database: 4793/15886 - Release Date: 08/14/18
Internal Virus Database is out of date.


--
Paul Bicknell G8KFW   South Coast UK


Re: 10MHz buffer amplifier

John Quarmby
 

I have used an ADA4851 as a line driver for 10MHz distribution on my tower mounted systems with ~50 ohms in series with the output to impedance match to the cable. It is available as a single, dual or quad SMD device.

73

John G3XDY

On 03/01/2020 20:23, Ed G3VPF wrote:
Many thanks for all the useful replies regarding the 10 MHz line driver. Perhaps a little more detail on my application is appropriate. I now have four portable systems for 23, 13, 6 and 3cms. As I have built each one I have built it as a standalone system with its own frequency reference so I now have an assortment of OCXO's of dubious origin and GPSDO's. I am now trying to integrate the four systems by using multi-band dish feeds and by reducing the number of support boxes. All four systems need a 10 MHz reference so I have invested in a high quality OCXO and now wish to feed it to all four systems. I am very space-limited and would like to put the system in the physical location of one of the GPSDO's. It means I have to build the unit into an identical box so the use of pre-built units is not appropriate.

The LM7171 has been suggested, but I tried this device driving 25MHz up a long piece of coax to the QO-100 LNB and found it was severely slew-rate limited. Changed to a BUF634 and this was OK. In this application the frequency is lower and the length of coax much less so the LM7171 may be OK. The BUF634 only has a gain of 0dB and in this case I need a gain of around 12dB so hence my quest for a suitable device.

I will follow-up some of the suggestions which may well be fruitful. Thanks once again for the assistance.

Ed, G3VPF IO80RQ

From: UKMicrowaves@groups.io <UKMicrowaves@groups.io> on behalf of Dennis Anderson via Groups.Io <g6ybc@...>
Sent: 03 January 2020 13:55
To: UKMicrowaves@groups.io <UKMicrowaves@groups.io>
Subject: Re: [UKMicrowaves] 10MHz buffer amplifier
 
I believe that SDR-Kits are selling some

Dennis G6YBC 




On Thursday, January 2, 2020, 10:14 pm, Neil Smith G4DBN <neil@...> wrote:

I have one of the 8-port kits still unbuilt, but I want to keep it to build on a special day. 

I already have one 4 port and one 8-port in use.  The 8-port was his first production upgrade board to turn a 4 into an 8.  They are by no means perfect, there is some port interaction and no transformer isolation.  When I boot my HP 8562A, it sends an output on the 10MHz port for a short time, which really messes up some of the other kit else connected to the same HUP box.

At this exact time I'm building a HUPrf e-field receive preamp and bias-tee kit.  I have seven more of those to build for a club project.

Sadly missed....

Neil G4DBN


On 02/01/2020 21:45, KENT BRITAIN wrote:
HUP had a kit for a 4 way 10 MHz divider.

Any of his kits still floating around?

Kent G8EMY


Re: 10MHz buffer amplifier

Ed G3VPF
 

Many thanks for all the useful replies regarding the 10 MHz line driver. Perhaps a little more detail on my application is appropriate. I now have four portable systems for 23, 13, 6 and 3cms. As I have built each one I have built it as a standalone system with its own frequency reference so I now have an assortment of OCXO's of dubious origin and GPSDO's. I am now trying to integrate the four systems by using multi-band dish feeds and by reducing the number of support boxes. All four systems need a 10 MHz reference so I have invested in a high quality OCXO and now wish to feed it to all four systems. I am very space-limited and would like to put the system in the physical location of one of the GPSDO's. It means I have to build the unit into an identical box so the use of pre-built units is not appropriate.

The LM7171 has been suggested, but I tried this device driving 25MHz up a long piece of coax to the QO-100 LNB and found it was severely slew-rate limited. Changed to a BUF634 and this was OK. In this application the frequency is lower and the length of coax much less so the LM7171 may be OK. The BUF634 only has a gain of 0dB and in this case I need a gain of around 12dB so hence my quest for a suitable device.

I will follow-up some of the suggestions which may well be fruitful. Thanks once again for the assistance.

Ed, G3VPF IO80RQ


From: UKMicrowaves@groups.io <UKMicrowaves@groups.io> on behalf of Dennis Anderson via Groups.Io <g6ybc@...>
Sent: 03 January 2020 13:55
To: UKMicrowaves@groups.io <UKMicrowaves@groups.io>
Subject: Re: [UKMicrowaves] 10MHz buffer amplifier
 
I believe that SDR-Kits are selling some

Dennis G6YBC 




On Thursday, January 2, 2020, 10:14 pm, Neil Smith G4DBN <neil@...> wrote:

I have one of the 8-port kits still unbuilt, but I want to keep it to build on a special day. 

I already have one 4 port and one 8-port in use.  The 8-port was his first production upgrade board to turn a 4 into an 8.  They are by no means perfect, there is some port interaction and no transformer isolation.  When I boot my HP 8562A, it sends an output on the 10MHz port for a short time, which really messes up some of the other kit else connected to the same HUP box.

At this exact time I'm building a HUPrf e-field receive preamp and bias-tee kit.  I have seven more of those to build for a club project.

Sadly missed....

Neil G4DBN


On 02/01/2020 21:45, KENT BRITAIN wrote:
HUP had a kit for a 4 way 10 MHz divider.

Any of his kits still floating around?

Kent G8EMY


Re: DB6NT Beacon Sender

Dave
 

Looks like DB6NT still makes the 10-12ghz multiplier  board , though you would have to get the circuit diagram and populate it with components.
Dave G4GLT 


On 3 Jan 2020, at 18:55, geoffrey pike via Groups.Io <gi0gdp@...> wrote:


Hi Steve,
Thanks for info but i need the oldie X96 what multiplies 108MHz to 10368 MHz
cheers
Geoff
GI0GDP

On Friday, 3 January 2020, 18:49:41 GMT, Steve G4HTZ via Groups.Io <essexsteve@...> wrote:


Link for vhf design shf device 
https://vhfdesign.com/pll-lo/lo-pll-usb.html


Siglent, Telonic, Lab

Ian White
 

Any views, please, about Siglent spectrum analysers?

Also, any experience about Telonic versus Labtronix as the UK dealer - thinking particularly about support?

-- 
73 from Ian GM3SEK


Re: DB6NT Beacon Sender

geoffrey pike
 

Hi Steve,
Thanks for info but i need the oldie X96 what multiplies 108MHz to 10368 MHz
cheers
Geoff
GI0GDP

On Friday, 3 January 2020, 18:49:41 GMT, Steve G4HTZ via Groups.Io <essexsteve@...> wrote:


Link for vhf design shf device 
https://vhfdesign.com/pll-lo/lo-pll-usb.html


Re: DB6NT Beacon Sender

Steve G4HTZ
 

Link for vhf design shf device 
https://vhfdesign.com/pll-lo/lo-pll-usb.html


Re: DB6NT Beacon Sender

Steve G4HTZ
 

Don’t think they do them anymore ....they do this programble oscillator which can also be used as a beacon keyer
https://shop.kuhne-electronic.com/kuhne/en/shop/signal-sources/oscillators/MKU+LO+813+PLL++Oscillator/?card=1714

vhf design in Ukraine also do a similar programble osilator ....but a lot cheaper 😀


DB6NT Beacon Sender

geoffrey pike
 

Does DB6NT still do these x96 multipliers?, cant find them on his site
cheers
Geoff
GI0GDP


Re: 10MHz buffer amplifier

Rien Eradus PA0JME
 

I myself use the LT1253, neat dual video amp 8 pin package, cheap with ali-expres, easy gain setting using 2 external resistors

73es Rien PA0JME


Re: 10 MHz Buffer Amplifier

Steve - WB0DBS
 

I use 4 of the DEMI boards (fed by a 4-way splitter) to distribute the 10MHz from a GPSDO to all my kit. Very happy with them!

Steve
WB0DBS



On Jan 3, 2020, at 8:34 AM, Barry VE4MA <ve4ma@...> wrote:


Down East Microwave had a nice amplified and filtered 4 port Amplifier for 10 MHz  See  http://01895fa.netsolhost.com/PDF/Manuals/L10-4.pdf  . Its available as a kit or assembled  

73
Barry VE4MA/ K7


10 MHz Buffer Amplifier

Barry VE4MA
 

Down East Microwave had a nice amplified and filtered 4 port Amplifier for 10 MHz  See  http://01895fa.netsolhost.com/PDF/Manuals/L10-4.pdf  . Its available as a kit or assembled  

73
Barry VE4MA/ K7


Re: 10MHz buffer amplifier

Dennis Anderson
 

I believe that SDR-Kits are selling some

Dennis G6YBC 




On Thursday, January 2, 2020, 10:14 pm, Neil Smith G4DBN <neil@...> wrote:

I have one of the 8-port kits still unbuilt, but I want to keep it to build on a special day. 

I already have one 4 port and one 8-port in use.  The 8-port was his first production upgrade board to turn a 4 into an 8.  They are by no means perfect, there is some port interaction and no transformer isolation.  When I boot my HP 8562A, it sends an output on the 10MHz port for a short time, which really messes up some of the other kit else connected to the same HUP box.

At this exact time I'm building a HUPrf e-field receive preamp and bias-tee kit.  I have seven more of those to build for a club project.

Sadly missed....

Neil G4DBN


On 02/01/2020 21:45, KENT BRITAIN wrote:
HUP had a kit for a 4 way 10 MHz divider.

Any of his kits still floating around?

Kent G8EMY