HI Ben, Its time for you to meet Franco's SU-02 board as it will do you well on 3cms (and other bands) You need a sharp knife and some soldering

HI Ben, Its time for you to meet Franco's SU-02 board as it will do you well on 3cms (and other bands) You need a sharp knife and some soldering

Thanks Andy, will give that a try and see how it goes. Elia, M0ZHN

Looks back though archives ... Brian being GM8BJF Yes, use an OPAMP gain stage. I use the LM6211 which is a 20MHz bandwidth chip that can operate up to 24V, and have used it with LMX2470 and LMX2487

Hi Andy, Thanks for your reply, it was in RadCom Plus Volume 1, No.1 but it is also on Brian's website: Versatile PLL Elia, M0ZHN

Can you refer the RadCom article - like which issue? I suspect you could use a non-inverting op-amp stage with a gain of 4 running from a 25V rail to get the swing you need. May need a fast opamp -

Anyone making preamps for 10Ghz. I have one, an HEMT type which does work but before I shoehorn it into my 10Ghz box I was just wondering if there's better out there, built of course. No facilities

Hi everyone, I am new here, just joined today. I would like to ask a question if I may. I am looking to build the versatile PLL that was published by Brian in RadCom Plus some time back. The circuit

No, hardware is up to the constructor. I can do Gerbers Andy www.g4jnt.com

Hi Andy, Will you be offering PCB's or is making those up to the reader ? If the later, can you share the gerbers so I can knock up a few down under ? thanks Tim -- VK2XAX : QF56if : ITU59 :

 Tony this is/was a problem with BT but it is easily solved (well certinly in my case) You may already have done this.....but maybe some missed previous descriptions I still see some bounced

In defence of John I had to switch to digest to avoid those continuous bounced message errors from groups.io. I was continually having to unlock my account due to this group, others did not appear to

In those early versions there was an approximate conversion for NGR <> Lat/Long doing the rounds that was good for 100m or so accuracy. It must have been an empirically designed formula as it had a

Hi Andy, Yes the very earliest version used just NGRs. But I soon updated it to use the lat long great circle calcs. That’s why it took so long to calculate, the basic language used was not fast

Actually, the RadCpm deadline is 15 July, so you've still time to send an updated copy. That's what happened with DN last month - the 'stop-press' bit at the end re. the attenuator. Andy www.g4jnt.com

> As I only take the digest Perhaps there's a moral there somewhere, John. ;-) People didn't send these reports in "for the column", they were sent for Group interest Andy www.g4jnt.com

Blast! I just submitted the column without these details! As I only take the digest, can you in future send stuff for the column direct to me. Ta John

Was that a prog that calculated bearings using Pythagorus on NGRs? The error doing that is quite considerable on paths more than a few tens of km, but back in those days on wide band FM was

Nice chip, that one. http://g4jnt.com/ADF5355_Synthesizer_Control.pdf http://g4jnt.com/Synthesizers.htm Andy www.g4jnt.com

Andy, I have just looked at the ‘black board’ I have under a good head viewer and the chip is an ADF5355 which goes to 13.5GHz. A completely different kettle of fish to the ADF4351. I think I