[1000mp] Inrad Front-end Mod

Sun, 18 Jan 2004 23:11:40 -0600

Tom, the 606A wants to be terminated in 50 ohms in order for the metering
and attenuator to be calibrated.

73, George W5YR
[email protected]

----- Original Message ----- 
From: "tbeltran" <[email protected]>
To: <[email protected]>
Sent: Sunday, January 18, 2004 7:50 PM
Subject: Re: [1000mp] Inrad Front-end Mod

> I got out my HP 606A, warmed it up, and set the Mark V for CW, on 14.100,
> with the filter set in the normal setting.
>
> The 606 was in the 100 Microvolt position, (-70 dbm), with the vernier set
> for a reading of 50 microvolts on the 606's output meter.  [I'm including
> this information, in the event that I am not reading the attenuator scale
> correctly.]  With what I think is 50 microvolts output fed with 50 ohm
cable
> to the input of the Mark V, I got the following readings:
>
> An IF gain setting of 0 gave me an S - 8.5.  IF gain settings of 2 -5 gave
> S-9, and then 6 - 8 gave me an S-reading of +5db.
> An IF gain setting of 9 gave me + 10, and up from there.
>
> I'm going to set the IF gain to 4 for a while and see how that works.  Tom
> W6EIJ
>
>
> _______________________________________________
> List Moderator: Richard Lubash N1VXW
> 1000mp mailing list
> [email protected]
> To Change Options or Unsubscribe:
> http://mailman.qth.net/mailman/listinfo/1000mp