Date   

Re: GB3MCB on 23 cms

Ralph
 


Hello John,
 
As far as I know, they do not use common frequency reference.
Each beacon is a completely seperate unit.
 
Couple of photos taken at the site in 2010
 
73
Ralph G4ALY
 
 

----- Original Message -----
From: john@...
Sent: Saturday, July 13, 2013 9:14 AM
Subject: Re: [ukmicrowaves] GB3MCB on 23 cms

 


I haven't made an accurate measurement but the 6m beacon seemed slightly off frequency last night. Do they all use the
same frequency reference? G8SEQ/P lsles of Scilly.

> -------Original Message-------
> From: Lawrence <lawrence@...>
> To: ukmicrowaves@...
> Subject: [ukmicrowaves] GB3MCB on 23 cms
> Sent: Jul 12 '13 14:40
>
> Has anyone checked the frequency of GB3MCB on 23 cms recently?
>
> For some time I have been looking for it without any luck. I assumed it
> was
> because it beams NE, which is sideways on to me, and that I use a rather
> low
> gain log periodic antenna. This morning I found it but it was not where I
> thought it would be. The web sites that list it give the frequency as
> 1296.860
> MHz but my radio indicated 1296.845 MHz which was much lower than I had
> anticipated.
>
> My radio is the IC-910X and earlier this year I had replaced the crystal
> oscillator with the optional high stability CR-293 (photos of this and of
> the
> antenna are on my QRZ entry). I have not calibrated it yet but hope to be
> able
> to do soon. I have acquired a Jupiter T GPS receiver and could use the
> ratio
> function on my counter to compare the 30.2 MHz with 10 kHz until I build a
> PLL
> circuit to give me 10 MHz.
>
> When I have compared my indicated frequency on 23 cms with others it is
> usually
> similar and within 1 kHz so I assume I am not too far out. The CR-293 has
> greatly improved the stability and so got rid of the drift which had been
> annoying. That was the most important improvement that I had been looking
> for.
>
> 73, Lawrence GJ3RAX
>
>
>

No virus found in this message.
Checked by AVG - www.avg.com
Version: 2013.0.3349 / Virus Database: 3204/6487 - Release Date: 07/12/13


activity

Carlo Castelli <i4cvc@...>
 



hi! i'm active from jn71su all band from 2mt to 15mm i'm interested at rs fenomen!
ciao i4cvc/7


Re: How to tune a 20ghz filter to 24ghz ??

DougF VK4OE
 

Hello John and other readers.

Regarding the possibility of re-tuning a 20 GHz stripline filter (presumably "microstrip"!) that far up in frequency, my experience is that it is probably a "tall ask". It might just be possible, but removing parts of the filter elements will cause significant 'damage' to the originally designed performance parameters, meaning that the final result may have worse insertion loss, bandwidth and input/output impedance. If you're willing to risk that outcome, by all means give modification a go....but you'll probably have only ever one chance at being successful! And, my experience is that it's far easier to bring 'microstrip' filters down in frequency than it is to raise their operating frequency.....

With your question about the DRO, I don't have any experience with replacing DRO pucks. Hopefully someone else will comment. But are you talking about free-running DROs which have doubtful usability except for wideband FM operation, or are you talking about DROs that are locked to a stable reference oscillator?

Very best wishes,

--Doug Friend, VK4OE.

On 13/07/2013 8:55 PM, John Lambo wrote:
Hello microwavers
I got form e-bay a 20 ghz LNB
What i like to know is:
I wonder does any one try to tune this strip line filter from 20 ghz to
24ghz ??
And also what will happend if i put a other dro in the oscillator and
try to get it wroking on 23ghz or beter to say 11,5 ghz.
Thank you for reply .

73 John PA7JB


How to tune a 20ghz filter to 24ghz ??

John Lambo
 

Hello microwavers
I got form e-bay a 20 ghz LNB
What i like to know is:
I wonder does any one try to tune this strip line filter from 20 ghz to 24ghz ??
And also what will happend if i put a other dro in the oscillator and try to get it wroking on 23ghz or beter to say 11,5 ghz.
Thank you for reply .

73 John PA7JB


JN27.. Activity

f1npx <dominique.dobler@...>
 

Hello all; sunday morning (14th july) I will be QRV 3cm (JN27..) for French microwave activity ("Mont Blanc" Scatter). Like I know that some OM in UK are interresting to this locator , at twelve o'clock (local time) I'm calling 144.175Mhz.
73's Dom; F1NPX (Sorry for my English, which is rusty a lot)


Re: SK6OSO Onsala 25m dish 23cm EME this weekend - min elevation limit

g4cch_1
 

1029z QRV now on 1296.050 + doppler 2.66KHz

--- In ukmicrowaves@yahoogroups.com, "Howard" <g4cch_1@...> wrote:

Sorry for the late notice, but it was only posted by the team at SK6OSO about 30 minutes ago.

They need a minimum elevation of 13 deg before they can be QRV.

This means that they will be QRV from approx

1040z today 13/07
1200z tomorrow 14/07

Unfortunately the Moon will be up at approx 7 or 8 deg by the time they acquire Moon. So this will limit the opportunity for stations without no elevation.

Best 73 & GL
Howard


Re: GB3MCB on 23 cms

Lawrence <lawrence@...>
 

-----Original Message-----
From: john@g8seq.com

I haven't made an accurate measurement but the 6m beacon seemed slightly off frequency last night. Do they all use the same frequency reference? G8SEQ/P lsles of Scilly.

I have just checked the beacons I can from GB3MCB. I use an IC-756 Pro 2 on 6 m and that gives me about zero beat on 10 MHz when I can hear WWV at night. Using the IC-910X on 2 m, 70 cms and 23 cms which seems to be about 500 Hz out on 23 cms. Not back on 4 m yet and I have nothing on 3 cms.

Listing the nominal frequencies and then the ones I have indicated on my radios,-
1296.860 1296.8459
432.970 432.967
144.469 144.46765
50.0424 50.04283

I presume that they do not have a common frequency reference as the one on 6 m seems slightly high and the rest, especially 23 cms, seem low. That is still taking into account that my IC-910X has not been calibrated yet but is close enough for my main purposes.

GB3IOJ is back on 6 m but the antenna is temporary and will be replaced soon. My indication is 50.06523 MHz when unkeyed.

73, Lawrence GJ3RAX


SK6OSO Onsala 25m dish 23cm EME this weekend - min elevation limit

g4cch_1
 

Sorry for the late notice, but it was only posted by the team at SK6OSO about 30 minutes ago.

They need a minimum elevation of 13 deg before they can be QRV.

This means that they will be QRV from approx

1040z today 13/07
1200z tomorrow 14/07

Unfortunately the Moon will be up at approx 7 or 8 deg by the time they acquire Moon. So this will limit the opportunity for stations without no elevation.

Best 73 & GL
Howard


New LTC6946 PIC firmware

Andy G4JNT
 

A while ago someone suggested including PIC code to allow link or switch selection of one-of-several prestored frequencies.
 
A version of the PIC firmware to control the LTC6946 Synth module in this way is now available.  The new firmware allows four complete register sets to be stored in the controller PIC's EEPROM, and selected by choosing one of four link settings.    Complete flexibility in synth programming is allowed for each of the four settings, with the complete register set being loaded each time.
 
An additional link allows the register contents to be programmed using an RS232 serial interface and ASCII text commands - in a not-dissimilar manner to that for the original controller.    A minor modification (addition of one pull-up resistor) is needed on the PCB.
 
So now, anyone needing several switchable LOs for 2.4GHz EME has a solution.
And new LOs for those feared band changes are no more than a bit of typing away.
 
The latest PIC code with updated documentation,  as well as the original control firmware  can be found at   http://www.g4jnt.com/LTC6946Support.zip   
 
 
Andy
G4JNT
 


Re: GB3MCB on 23 cms

John E. Beech
 

I haven't made an accurate measurement but the 6m beacon seemed slightly off frequency last night. Do they all use the
same frequency reference? G8SEQ/P lsles of Scilly.

-------Original Message-------
From: Lawrence <lawrence@werewoolf.org>
To: ukmicrowaves@yahoogroups.com
Subject: [ukmicrowaves] GB3MCB on 23 cms
Sent: Jul 12 '13 14:40

Has anyone checked the frequency of GB3MCB on 23 cms recently?

For some time I have been looking for it without any luck. I assumed it
was
because it beams NE, which is sideways on to me, and that I use a rather
low
gain log periodic antenna. This morning I found it but it was not where I
thought it would be. The web sites that list it give the frequency as
1296.860
MHz but my radio indicated 1296.845 MHz which was much lower than I had
anticipated.

My radio is the IC-910X and earlier this year I had replaced the crystal
oscillator with the optional high stability CR-293 (photos of this and of
the
antenna are on my QRZ entry). I have not calibrated it yet but hope to be
able
to do soon. I have acquired a Jupiter T GPS receiver and could use the
ratio
function on my counter to compare the 30.2 MHz with 10 kHz until I build a
PLL
circuit to give me 10 MHz.

When I have compared my indicated frequency on 23 cms with others it is
usually
similar and within 1 kHz so I assume I am not too far out. The CR-293 has
greatly improved the stability and so got rid of the drift which had been
annoying. That was the most important improvement that I had been looking
for.

73, Lawrence GJ3RAX



Re: Finningley

Dave <dave@...>
 


Dear All,
 
I now realise that I was on the wrong site to ammend my registration for Finningley this year.  After using the UKuG site to access the Finningley website for this year, I was able to re-enter my registration.
 
At this point I should apologise for some of the postings that I have made recently. My explanation, but not excuse, is that I have been under some pressure both personally and through work and I have, I am sorry to have to admit, allowed my frustration and anger to be relayed on this and other forums.
 
After discussing this with other radio amateurs and, I hope still, friends, I have decided to take the digest version.  This should allow me to think before I post in future.
 
Dave (G0DJA)


Re: GB3MCB on 23 cms

Lawrence <lawrence@...>
 

-----Original Message-----
From: Keith Winnard

Just checked against gpsdo, 1296.8463Mhz.

Thanks. That makes me about 500 Hz out and I was hoping that I was within about 1 kHz at this stage.

Do you have a good path in my direction? If so, I would appreciate a sked some time.

73, Lawrence GJ3RAX


Re: GB3MCB on 23 cms

Lawrence <lawrence@...>
 

-----Original Message-----
From: Ralph Bird

I can confirm it is on 1296.846 +/- a whisker

Thanks that confirms that my calibration is closer than I though it would be. Hope to meet you on 23 cms soon.

73, Lawrence GJ3RAX


Re: GB3MCB on 23 cms

Keith GW3TKH
 

Just checked against gpsdo, 1296.8463Mhz.

73 Keith
GW3TKH



From: Ralph Bird
To: ukmicrowaves@...
Sent: Friday, 12 July 2013, 19:02
Subject: Re: [ukmicrowaves] GB3MCB on 23 cms

 
I can confirm it is on 1296.846 +/- a whisker
73
Ralph G4ALY
 
----- Original Message -----
From: Lawrence
Sent: Friday, July 12, 2013 4:21 PM
Subject: Re: [ukmicrowaves] GB3MCB on 23 cms

 
-----Original Message-----
From: Neil Whiting

> If you look on http://www.beaconspot.eu you can see that the spots show the
> frequency has been drifting down over the last few months.
> It was last reported on 1296.846, so looks like your frequency is good.
> I can't hear it at present so can't confirm.

> Try this link - hopefully it will work for you:
> http://www.beaconspot.eu/beaconc.php?beaconcall=GB3MCB&bandmhz=1296

Thanks for that. I had not thought of looking there so it was appreciated.

I had quoted an approximate frequency that was displayed when the keying gave a
reasonable tone. I can only read Morse when I know what I am receiving and the
speed is very low!

I just tried again and tuned for zero beat when it was not keying. It now shows
1296.845.8 which is very close to the frequency given on that web page. I am now
more confident than I was before that my calibration seems to be as good as I
need it to be as I only use SSB on that band.

I am now hoping to be able to get more QSOs with some of you on 23 cms. I have
worked a few G stations on the band and during VHF NFD was getting a very strong
signal from EI9E/P which I also worked on 6 m, 2 m and 70 cms. Best DX so far
has been DB6NT, out of 6 countries worked, but I am still looking for a GW as
that should be relatively easy if someone is in a good location.

73, Lawrence GJ3RAX

No virus found in this message.
Checked by AVG - www.avg.com
Version: 2013.0.3349 / Virus Database: 3204/6485 - Release Date: 07/12/13



Re: GB3MCB on 23 cms

Ralph
 

I can confirm it is on 1296.846 +/- a whisker
73
Ralph G4ALY
 

----- Original Message -----
From: Lawrence
Sent: Friday, July 12, 2013 4:21 PM
Subject: Re: [ukmicrowaves] GB3MCB on 23 cms

 

-----Original Message-----
From: Neil Whiting

> If you look on http://www.beaconspot.eu you can see that the spots show the
> frequency has been drifting down over the last few months.
> It was last reported on 1296.846, so looks like your frequency is good.
> I can't hear it at present so can't confirm.

> Try this link - hopefully it will work for you:
> http://www.beaconspot.eu/beaconc.php?beaconcall=GB3MCB&bandmhz=1296

Thanks for that. I had not thought of looking there so it was appreciated.

I had quoted an approximate frequency that was displayed when the keying gave a
reasonable tone. I can only read Morse when I know what I am receiving and the
speed is very low!

I just tried again and tuned for zero beat when it was not keying. It now shows
1296.845.8 which is very close to the frequency given on that web page. I am now
more confident than I was before that my calibration seems to be as good as I
need it to be as I only use SSB on that band.

I am now hoping to be able to get more QSOs with some of you on 23 cms. I have
worked a few G stations on the band and during VHF NFD was getting a very strong
signal from EI9E/P which I also worked on 6 m, 2 m and 70 cms. Best DX so far
has been DB6NT, out of 6 countries worked, but I am still looking for a GW as
that should be relatively easy if someone is in a good location.

73, Lawrence GJ3RAX

No virus found in this message.
Checked by AVG - www.avg.com
Version: 2013.0.3349 / Virus Database: 3204/6485 - Release Date: 07/12/13


Re: GB3MCB on 23 cms

Ralph
 

 
----- Original Message -----
From: Lawrence
Sent: Friday, July 12, 2013 4:21 PM
Subject: Re: [ukmicrowaves] GB3MCB on 23 cms

 

-----Original Message-----
From: Neil Whiting

> If you look on http://www.beaconspot.eu you can see that the spots show the
> frequency has been drifting down over the last few months.
> It was last reported on 1296.846, so looks like your frequency is good.
> I can't hear it at present so can't confirm.

> Try this link - hopefully it will work for you:
> http://www.beaconspot.eu/beaconc.php?beaconcall=GB3MCB&bandmhz=1296

Thanks for that. I had not thought of looking there so it was appreciated.

I had quoted an approximate frequency that was displayed when the keying gave a
reasonable tone. I can only read Morse when I know what I am receiving and the
speed is very low!

I just tried again and tuned for zero beat when it was not keying. It now shows
1296.845.8 which is very close to the frequency given on that web page. I am now
more confident than I was before that my calibration seems to be as good as I
need it to be as I only use SSB on that band.

I am now hoping to be able to get more QSOs with some of you on 23 cms. I have
worked a few G stations on the band and during VHF NFD was getting a very strong
signal from EI9E/P which I also worked on 6 m, 2 m and 70 cms. Best DX so far
has been DB6NT, out of 6 countries worked, but I am still looking for a GW as
that should be relatively easy if someone is in a good location.

73, Lawrence GJ3RAX

No virus found in this message.
Checked by AVG - www.avg.com
Version: 2013.0.3349 / Virus Database: 3204/6485 - Release Date: 07/12/13


Re: GB3MCB on 23 cms

Lawrence <lawrence@...>
 

-----Original Message-----
From: Neil Whiting

If you look on http://www.beaconspot.eu you can see that the spots show the frequency has been drifting down over the last few months.
It was last reported on 1296.846, so looks like your frequency is good.
I can't hear it at present so can't confirm.
Try this link - hopefully it will work for you:
http://www.beaconspot.eu/beaconc.php?beaconcall=GB3MCB&bandmhz=1296

Thanks for that. I had not thought of looking there so it was appreciated.

I had quoted an approximate frequency that was displayed when the keying gave a reasonable tone. I can only read Morse when I know what I am receiving and the speed is very low!

I just tried again and tuned for zero beat when it was not keying. It now shows 1296.845.8 which is very close to the frequency given on that web page. I am now more confident than I was before that my calibration seems to be as good as I need it to be as I only use SSB on that band.

I am now hoping to be able to get more QSOs with some of you on 23 cms. I have worked a few G stations on the band and during VHF NFD was getting a very strong signal from EI9E/P which I also worked on 6 m, 2 m and 70 cms. Best DX so far has been DB6NT, out of 6 countries worked, but I am still looking for a GW as that should be relatively easy if someone is in a good location.

73, Lawrence GJ3RAX


Re: GB3MCB on 23 cms

Neil Whiting <neil@...>
 

Hello Lawrence,

If you look on http://www.beaconspot.eu you can see that the spots show the
frequency has been drifting down over the last few months.
It was last reported on 1296.846, so looks like your frequency is good.
I can't hear it at present so can't confirm.

Try this link - hopefully it will work for you:
http://www.beaconspot.eu/beaconc.php?beaconcall=GB3MCB&bandmhz=1296

73. Neil G4BRK

On 12/07/2013 14:40, Lawrence wrote:
Has anyone checked the frequency of GB3MCB on 23 cms recently?

For some time I have been looking for it without any luck. I assumed it was
because it beams NE, which is sideways on to me, and that I use a rather low
gain log periodic antenna. This morning I found it but it was not where I
thought it would be. The web sites that list it give the frequency as 1296.860
MHz but my radio indicated 1296.845 MHz which was much lower than I had
anticipated.

My radio is the IC-910X and earlier this year I had replaced the crystal
oscillator with the optional high stability CR-293 (photos of this and of the
antenna are on my QRZ entry). I have not calibrated it yet but hope to be able
to do soon. I have acquired a Jupiter T GPS receiver and could use the ratio
function on my counter to compare the 30.2 MHz with 10 kHz until I build a PLL
circuit to give me 10 MHz.

When I have compared my indicated frequency on 23 cms with others it is usually
similar and within 1 kHz so I assume I am not too far out. The CR-293 has
greatly improved the stability and so got rid of the drift which had been
annoying. That was the most important improvement that I had been looking for.

73, Lawrence GJ3RAX







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

Yahoo! Groups Links




GB3MCB on 23 cms

Lawrence <lawrence@...>
 

Has anyone checked the frequency of GB3MCB on 23 cms recently?

For some time I have been looking for it without any luck. I assumed it was because it beams NE, which is sideways on to me, and that I use a rather low gain log periodic antenna. This morning I found it but it was not where I thought it would be. The web sites that list it give the frequency as 1296.860 MHz but my radio indicated 1296.845 MHz which was much lower than I had anticipated.

My radio is the IC-910X and earlier this year I had replaced the crystal oscillator with the optional high stability CR-293 (photos of this and of the antenna are on my QRZ entry). I have not calibrated it yet but hope to be able to do soon. I have acquired a Jupiter T GPS receiver and could use the ratio function on my counter to compare the 30.2 MHz with 10 kHz until I build a PLL circuit to give me 10 MHz.

When I have compared my indicated frequency on 23 cms with others it is usually similar and within 1 kHz so I assume I am not too far out. The CR-293 has greatly improved the stability and so got rid of the drift which had been annoying. That was the most important improvement that I had been looking for.

73, Lawrence GJ3RAX


116 MHz 60C HC49/U Xtals for sale

Conrad Farlow <conrad@...>
 

I have some HC49/U 116 MHz 5th overtone crystals for sale. They have been specified for a crystal oven operating at 60C and come with individual test data. They are ideal for use with the G8ACE OCXO.

Here is one from the batch of 10.

Tolerance @ 60C -4.7ppm, ESR 64.4 ohms, C1 0.237 fF, L1 8mH, C0 1.78pF, Turnover point 59.2 deg C

I have 3 for sale, I'm keeping the rest :)

I intend using one of mine with a Hermes transceiver and a transverter.

£20 each plus postage

Pay pal is OK

--

73

Conrad G0RUZ

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

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