[Boatanchors] HP 606 vs. 608

[Carl]

Hey Andy, got your 2 CD tube data yesterday, Its great as is your web 
page.

The HP-606B has the synthesizer but it tends to be Birdland. My 606A 
will hold in a 400 Hz passband on HF with ease after 30 minute warmup. A 
bit more on 6M. National replaced the GR1001A drifters with the original 
606 and they drifted more than the GR. HP got a lot of heat from us 
since about 50 were purchased. We hadnt sold the GR's yet and they went 
back on the benches until HP came out with the fix, the 606A.

Carl
KM1H
National Radio 1963-69




----- Original Message ----- 
From: "James A. (Andy) Moorer" <jamminpower at earthlink.net>
To: <boatanchors at qth.net>
Sent: Wednesday, February 11, 2009 6:08 PM
Subject: Re: [Boatanchors] HP 606 vs. 608


> Indeed, if you want something that works and works reliably so you 
> don't
> have to fiddle with it too much, you probably want a modern transistor
> signal generator (or any other kind of test equipment). On the other 
> hand,
> if you want something that looks really cool and has that great 
> "ker-chunk"
> when you switch bands, the 606 and 608 (and 612 and several others) 
> are
> definitely for you.
>
> Plus, they tend to put out a lot more signal power than a lot of 
> transistor
> equipment. These devices have both an AM and an FM input - you could
> actually use either one as an exciter.
>
> Note that both of these generators drift - the frequency is not as 
> stable as
> it should be. HP made a synchronizer (the 8708A) that fixed all that. 
> With
> the synchronizer, they are rock-solid and stable. These synchronizers 
> are
> also widely available on a "take it before the XYL throws it out" 
> basis as
> well.
>
> James A. (Andy) Moorer
> www.jamminpower.com
>
>
>
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