[Microwave] Ancient HP 626A

[Dave Brown]

Dave,
I have a 618/620 handbook- they should be very similar inside to the
626A-just lower frequency ranges. I have the 620- covers 7-11 GHz-big and
heavy but reliable.
If you don't get a better offer I can scan a few pages here and there for
you.
 As a starter I'll scan the specs etc later  (should be very similar as
well) and email them direct.

73
 Dave (yep- another one!)
 ZL3FJ, Christchurch, NZ

----- Original Message ----- 
From: "Dave and Kathy Woodhall" <dakatech@acenet.co.za>
To: <Microwave@mailman.qth.net>
Sent: Sunday, June 01, 2003 5:00 AM
Subject: [Microwave] Ancient HP 626A


> Hi everyone,
>
>     I've been given a HP626A SHF signal generator that covers 10 GHz band.
I
> know it's not quite the latest technology but it will do as a test signal
> source for some 3cm experiments I want to carry out!
>  It had some minor faults that I've cleared but there is something I would
> like help on.
>
> 1)    Circuit diagram or manual - I've got nothing so anything you may
have
> would help. Don't know how to operate it, never mind how to set it up.
>
> 2)    It stops oscillating at about 12.5 GHz, just before a microswitch
> clicks in - when the switch is in it oscillates again till the frequency
is
> at the top of it's range. Possibly a set up of voltages?
>
> 3)    It has a thermal delay relay fitted that is faulty - does anyone
know
> where I can get an AMPERITE DELAY RELAY 115N030T.You would no doubt be
> interested to know that I made a 30 second delay from a PIC micro as I
> guessed that is what the 30 in the part number means! Bit of 2003
technology
> never goes amiss, but I would like to put in the original part!
>
> 4)    Do you know how the pulse modulation is supposed to work. I can get
it
> to internal / external FM, CW, and modulate with a square wave, but don't
> know how to make it pulse.
>
>     Any help you can give - on or off list - would be appreciated.
>
>     Thanks n 73 Dave ZS6BNT in sunny, but chilly (just going into winter)
> Johannesburg South Africa.
>
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