[Boatanchors] Meissner Signal Shifter, EX 160m turret-mounted coil strip (18-3575) info

[jeremy-ca]

Great info Bill and thanks for taking the time to measure.

Yes, the Signal Shifter oscillator runs at half frequency at 80M and above 
but I wasnt aware that it used the fundamental on 160.

So now I can use a 80M assembly from a junker and go from there.

Carl
KM1H



----- Original Message ----- 
From: "Bill, N4QA" <bill at n4qa.com>
To: <boatanchors at mailman.qth.net>
Sent: Friday, May 16, 2008 8:02 PM
Subject: [Boatanchors] Meissner Signal Shifter,EX 160m turret-mounted coil 
strip (18-3575) info


> Complete 160m coil strip assembly is Meissner p/n 18-3575.
>
> There are three coil sub-assemblies  within the strip:
>
> Osc grid coils  (four turret connections)  Meissner p/n 05613 - same coils 
> as in the 80m strip!
> Now, I understand why my 1.8 MHz rocks oscillate well for use on both 160, 
> straight thru and on 80, xtal freq x 2 .
>
>
> Osc plate coils  (three turret connections) Meissner p/n 0-5160.
>
>
> Amplifier plate coils  (5 turret connections) Meissner p/n  10516 or 
> something like that...hard to read...partially hidden.
>
>
> The coil terminal numbers are denoted in the assembly instructions as 
> beginning with terminal 1, towards the rear of the rig.
> These terminal numbers do not appear in the schematic and I have not 
> attempted to make the correlations.
> Nor have I attempted to determine any phasing relationships among the 
> coils.
>
> Inductance measurements using AADE L/C Meter IIB:
>
> Osc grid coil terminals:
> 1-2 = 1.2 uH... this appears to be a tickler coil of approximately 7 turns 
> wound over the main coil.
> 1-4 = 116 uH...the main coil.
> Short wire jumper interconnects terminals 3-4.
>
> Osc plate coil terminals:
> 1-3 = 144 uH.
> Also connected 1-3 = 22K ohm, 10%, 2 watt resistor. It's effect on the L 
> reading...I dunno.
> No connection on terminal 2.
>
> Amplifier plate coil termnals:
> 1-2 = 110 uH.
> 2-3 = 130 uH.
> 1-3 = 271 uH
> 4-5 = 110 uH...this is the 300 ohm link output coil.
>
> Thanks for asking for this info...I've learned a bit more about my Novice 
> (1965) rig.
> Dad (W4MAI- SK) used my Novice MSS, EX back in the forties.
> Some models go back even farther...
>
> 73 & 72,
> Bill, N4QA
>
>
>
> _______________________________________________
>