[ARC5] Hewlett Packard Signal Generator HP-606B - Removing screws

[Brian Clarke]

Hello Mac,

Please answer the emails I have been sending you since early January this 
year.

73 de Brian, VK2GCE.

----- Original Message ----- 
From: "D C *Mac* Macdonald" <k2gkk at hotmail.com>
To: "WB6KBL Knoppow, Richard" <1oldlens1 at ix.netcom.com>; "ARC-5 Mail List" 
<arc5 at mailman.qth.net>
Sent: Friday, March 02, 2012 2:22 PM
Subject: Re: [ARC5] Hewlett Packard Signal Generator HP-606B - Removing 
screws


>
> Xcelite makes several hex wrenches in 7/64 " size.
> The 99-PS-60 set contains both 7/64 AND 9/64.
> The small short set (forget the set number) has
> the 7/64 as one of the eight bits in the set.
>
> Quite a few other tool suppliers have these. I
> suspect you can even get them in the "T-handle"
> style.
>
> I did not intend to mislead when I "GUESSED" that
> the know screws MIGHT be Bristol/spline.
>
> * * * * * * * * * * *
> * 73 - Mac, K2GKK/5 *
> * k2gkk at hotmail.com *
> * (Since 30 Nov 53) *
> * Oklahoma City, OK *
> * USAF, Ret (61-81) *
> * * * * * * * * * * *
>
>
>
>> From: 1oldlens1 at ix.netcom.com
>> To: arc5 at mailman.qth.net
>> Date: Thu, 1 Mar 2012 18:50:58 -0800
>> Subject: Re: [ARC5] Hewlett Packard Signal Generator HP-606B - Removing 
>> screws
>>
>>
>> ----- Original Message ----- 
>> From: "Leslie Smith" <vk2bcu at operamail.com>
>> To: "ARC-5 List" <arc5 at mailman.qth.net>
>> Sent: Thursday, March 01, 2012 4:28 PM
>> Subject: [ARC5] Hewlett Packard Signal Generator HP-606B -
>> Removing screws
>>
>>
>> > Hello Group,
>> > I have a 1960's vintage signal generator I wish to use to
>> > calibrate my
>> > ARC-5 "command" radios.
>> > The model: HP-606B.
>> >
>> > At the moment it's un-servicable or SNAFU.
>> > To get inside the RF cage I need a special tool (an allen
>> > key or hex
>> > key) on a long shaft.
>> > Normally this is supplied by HP, with the instrument, but
>> > alas ....
>> >
>> > I am unable to find the correct size allan key.
>> > 1/8 is too big, and 3/32 is too small.
>> > 3 mm is too big and 2.5 mm is too small.
>> > Beyond that I WILL need the correct size on an extended
>> > shaft (may have
>> > to drill & silver solder a shorter key onto an extension).
>> >
>> > Perhaps it's 2.54mm or 0.100 inches?
>> > Help! <- almost begging!
>> >
>> > 73
>> >
>> > -- 
>> > Leslie Smith
>> > vk2bcu at operamail.com
>> >
>>
>> The screws are standard size allen heads 6-32 x 3/8.
>> Shield box screws have No.6 outside tooth lock washers on
>> them, the ones that go on the mounting brackets have No.6
>> flat washers. Some units have split lockwashers. The wrench
>> is a special and are often missing. It is 0.1087 across the
>> flats. This is a standard size, 7/64".
>> I made a usable wrench from a long handled T wrench by
>> cutting off one side of the T. I think the standard Xcelite
>> wrench with extender will also fit, perhaps it takes two
>> extenders. I have a vague memory I used an Xcelite at -hp-
>> in preference to the long L wrench although I kept a spare
>> in my kit. The only screws you really need the long wrench
>> for are the ones in-between the shield box and power supply
>> although its pretty handy to have for the others too. The
>> sets are available via the web from a lot of places. I got a
>> set at a decent price from Amazon. They are expensive but
>> are very useful. You _may_ have to get an extra extender.
>> You need a wrench about ten inches long.
>>
>>
>> --
>> Richard Knoppow
>> Los Angeles
>> WB6KBL
>> dickburk at ix.netcom.com
>
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