EICO 324

EICO 324

Post by Dolp » Fri, 10 May 2002 07:38:37



Hello,

I've just picked up an EICO 324 Signal Generator.  The RF "probe" did
not come with it.  It has a connector that I have not seen before.
Does anyone know where I can get a connector for the RF so I can make
up a wire?

Also what did the original RF wire/probe have on the end where you
connect it to the radio?

I know it has to be shielded, I'm thinking RG59 or 58 coax, will that
do?

I have alignment instructions for my Zenith 8G005 but I'm not sure
where to connect the SG for the IF alignment.  Can anyone explain
where the "grid of the convertor" is.  I'm guessing the grid of the
1LC6. Any help for a beginner would be greatly appriciated.  I have
the schematic and understand the principal of alignment, just not too
sure of the detials.  I've read through the messages from the past in
this group to try to find the answers but I only cane close.

Thanks
Randy

 
 
 

EICO 324

Post by Joe Lan » Fri, 10 May 2002 08:30:35



Quote:
> Hello,

> I've just picked up an EICO 324 Signal Generator.  The RF "probe" did
> not come with it.  It has a connector that I have not seen before.
> Does anyone know where I can get a connector for the RF so I can make
> up a wire?

> Also what did the original RF wire/probe have on the end where you
> connect it to the radio?

> I know it has to be shielded, I'm thinking RG59 or 58 coax, will that
> do?

I built one of these  signal generators many years ago and they came with a
peice of coax and the proper connector to fit the mating connector on the
generator. Since then I have replaced the connector with a BNC connector and
a standard BNC to alligator jumper cable. There was no probe as such on the
original cable
---Joe---

 
 
 

EICO 324

Post by Phil Wit » Fri, 10 May 2002 08:41:39



Quote:
>Hello,

>I've just picked up an EICO 324 Signal Generator.  The RF "probe" did
>not come with it.  It has a connector that I have not seen before.
>Does anyone know where I can get a connector for the RF so I can make
>up a wire?

The connectors were popularly called "Amphenol connectors" and were
frequently used with microphones during the mid 20th century. They are
around but a little hard to find sometimes. Some people claim to have
made do with a PL-259 by cutting the pin down. I prefer the BNC
solution.

Quote:

>Also what did the original RF wire/probe have on the end where you
>connect it to the radio?

Signal Generators don't use an "RF Probe" by normal definition.
Best I can remember, the cable came with an egg-shaped device with
two alligator clip leads enamating from it. For practical purposes,
any two pieces of wire will work. Coax would be preferred.

Quote:

>I know it has to be shielded, I'm thinking RG59 or 58 coax, will that
>do?

>I have alignment instructions for my Zenith 8G005 but I'm not sure
>where to connect the SG for the IF alignment.  Can anyone explain
>where the "grid of the convertor" is.  I'm guessing the grid of the
>1LC6. Any help for a beginner would be greatly appriciated.  I have
>the schematic and understand the principal of alignment, just not too
>sure of the detials.  I've read through the messages from the past in
>this group to try to find the answers but I only cane close.

I think Pin 4 of the 1LC6. Just remember to keep the generator output
as-low-as possible at all times.
 
 
 

EICO 324

Post by Ted Peters » Fri, 10 May 2002 11:59:37


Randy:

The grid is pin 6, by the way, you'll want to use the 1LA6 rather than
1LC6 for optimum performance, it's a higher rated tube. Zenith figured
that out right away and specified the 1LA6 on all subsequent models
after the first 8G iteration.

 
 
 

EICO 324

Post by Crazy Georg » Fri, 10 May 2002 12:59:48


If you want the easy way out, Bill Turner sells a cable with that connector
already made up.  Check down through the postings for anything all in caps
to get his address.  It is something like "dialcovers."  Send him an e-mail
and ask price.

--
Crazy George
Remove NO and SPAM from return address

Quote:
> Hello,

> I've just picked up an EICO 324 Signal Generator.  The RF "probe" did
> not come with it.  It has a connector that I have not seen before.
> Does anyone know where I can get a connector for the RF so I can make
> up a wire?

> Also what did the original RF wire/probe have on the end where you
> connect it to the radio?

> I know it has to be shielded, I'm thinking RG59 or 58 coax, will that
> do?

> I have alignment instructions for my Zenith 8G005 but I'm not sure
> where to connect the SG for the IF alignment.  Can anyone explain
> where the "grid of the convertor" is.  I'm guessing the grid of the
> 1LC6. Any help for a beginner would be greatly appriciated.  I have
> the schematic and understand the principal of alignment, just not too
> sure of the detials.  I've read through the messages from the past in
> this group to try to find the answers but I only cane close.

> Thanks
> Randy

 
 
 

EICO 324

Post by Jeffrey D Angu » Fri, 10 May 2002 14:17:05


Quote:

>If you want the easy way out, Bill Turner sells a cable with that connector
>already made up.  Check down through the postings for anything all in caps
>to get his address.  It is something like "dialcovers."  Send him an e-mail
>and ask price.

Despite a recent pleasant bit of email I received from Bill

Quote:

>SCREW YOU

>PLEASE EXCUSE CAPS, SHORT REPLIES, STROKE

>Bill Turner, WA0ABI, 1117 Pike St., Saint Charles,MO 63301.  Phone
>636-949-2210    

>Galena crystal embedded in '"wood medal". Felt Washers 3/4"o.d. x 1/4'
>i.d.. Brown, green, or maroon.  10 Dial Springs.  "Dittle Stick",
>Soldering Tool, wood handle and staindless steel ends,  Westinghouse
>"RC" Information sheet,  'I COLLECT ANTIQUE RADIOS______" Bumper
>Sticker.  ANY OF THE ABOVE $2.00 POSTPAID


Jeff

--
"They that can give up essential liberty to obtain a little temporary
 safety deserve neither liberty nor safety." Benjamin Franklin

 
 
 

EICO 324

Post by Bill Turn » Fri, 10 May 2002 21:17:05


THE 1LA6 AND 1LC6 ARE IDENTICAL IN A -B TESTS CONDUCTED BY AN IMPARTIAL
TESTS PERFORMED IN A BLIND TEST PERFORMED BY A MEMBER OF THE NEWSGROUP.

PLEASE EXCUSE CAPS, SHORT REPLIES, STROKE

Bill Turner, WA0ABI, 1117 Pike St., Saint Charles,MO 63301.  Phone
636-949-2210    

Galena crystal embedded in '"wood medal". Felt Washers 3/4"o.d. x 1/4'
i.d.. Brown, green, or maroon.  10 Dial Springs.  "Dittle Stick",
Soldering Tool, wood handle and staindless steel ends,  Westinghouse
"RC" Information sheet,  'I COLLECT ANTIQUE RADIOS______" Bumper
Sticker.  ANY OF THE ABOVE $2.00 POSTPAID

 
 
 

EICO 324

Post by Syl » Sat, 11 May 2002 00:01:59


The toughest part for the blind was to change tubes for the test...

Syl

Bill Turner a crit :

Quote:

> THE 1LA6 AND 1LC6 ARE IDENTICAL IN A -B TESTS CONDUCTED BY AN IMPARTIAL
> TESTS PERFORMED IN A BLIND TEST PERFORMED BY A MEMBER OF THE NEWSGROUP.

> PLEASE EXCUSE CAPS, SHORT REPLIES, STROKE

> Bill Turner, WA0ABI, 1117 Pike St., Saint Charles,MO 63301.  Phone
> 636-949-2210

> Galena crystal embedded in '"wood medal". Felt Washers 3/4"o.d. x 1/4'
> i.d.. Brown, green, or maroon.  10 Dial Springs.  "Dittle Stick",
> Soldering Tool, wood handle and staindless steel ends,  Westinghouse
> "RC" Information sheet,  'I COLLECT ANTIQUE RADIOS______" Bumper
> Sticker.  ANY OF THE ABOVE $2.00 POSTPAID

 
 
 

EICO 324

Post by Ted Peters » Sat, 11 May 2002 04:01:02


THE 1LA6 AND 1LC6 ARE IDENTICAL IN A -B TESTS CONDUCTED BY AN
IMPARTIAL
TESTS PERFORMED IN A BLIND TEST PERFORMED BY A MEMBER OF THE
NEWSGROUP.

Perhaps on the AM/BC band, Bill, but definitely not on the SW band
particularly at the shorter wavelengths. Swapped out the 1LA6 for 1LC6
in my 8G005 and while the medium wave seemed unaffected, the 16 meter
band is totally kaput with that tube installed. (No, it wasn't a
double-blind test, sorry)  I suspect there is a bit of
rebadging/relabeling in the mix as well, it's not inconceivable that
1LA6's were marked as 1LC6 in the past, nor do I doubt an esp. "hot"
1LC6 might work OK in this application.

 
 
 

EICO 324

Post by Bill Turn » Sat, 11 May 2002 05:47:57


 . . . . OR PERHAPS YOUR 1LC6 WAS IN SOME WAY DEFECTIVE. . . . .

PLEASE EXCUSE CAPS, SHORT REPLIES, STROKE

Bill Turner, WA0ABI, 1117 Pike St., Saint Charles,MO 63301.  Phone
636-949-2210    

Galena crystal embedded in '"wood medal". Felt Washers 3/4"o.d. x 1/4'
i.d.. Brown, green, or maroon.  10 Dial Springs.  "Dittle Stick",
Soldering Tool, wood handle and staindless steel ends,  Westinghouse
"RC" Information sheet,  'I COLLECT ANTIQUE RADIOS______" Bumper
Sticker.  ANY OF THE ABOVE $2.00 POSTPAID

 
 
 

EICO 324

Post by Dolp » Sat, 11 May 2002 10:21:38


Quote:

> Randy:

> The grid is pin 6, by the way, you'll want to use the 1LA6 rather than
> 1LC6 for optimum performance, it's a higher rated tube. Zenith figured
> that out right away and specified the 1LA6 on all subsequent models
> after the first 8G iteration.

Thanks to all who answered my questions...

I have another one...

Ok, so the center of the "RF OUT" goes to pin #6 of the 1LC6, where
does the shield go?  To B- ?  or to the chassis?

I'm sure it's obvious to most of you but I can't find any where that
it says exactly how to hook up the SG with the radio. I have a copy of
the instruction manual but it's not any too detail about the
connections.

Once again, thanks.
Randy

 
 
 

EICO 324

Post by Ted Peters » Sat, 11 May 2002 11:26:15


Quote:

> . . . . OR PERHAPS YOUR 1LC6 WAS IN SOME WAY DEFECTIVE. . . . .

It's possible, Bill.  Still, why did Zenith switch from a specified
1LA6 in the first Trans Oceanic to a 1LC6 on the first 8G005 post-war
model, and then *back* to the 1LA6 for all subsequent loctal-equipped
radios?
 
 
 

EICO 324

Post by Bill Turn » Sat, 11 May 2002 19:00:09


WELL PERHAPS YOU SHOULD RUN ANOTHER BLIND TEST USING SEVERAL OF EACH
TYPE, IN THIS WAY YOU WILL KNOW FOR SURE. . . . .

PLEASE EXCUSE CAPS, SHORT REPLIES, STROKE

Bill Turner, WA0ABI, 1117 Pike St., Saint Charles,MO 63301.  Phone
636-949-2210    

Galena crystal embedded in '"wood medal". Felt Washers 3/4"o.d. x 1/4'
i.d.. Brown, green, or maroon.  10 Dial Springs.  "Dittle Stick",
Soldering Tool, wood handle and staindless steel ends,  Westinghouse
"RC" Information sheet,  'I COLLECT ANTIQUE RADIOS______" Bumper
Sticker.  ANY OF THE ABOVE $2.00 POSTPAID

 
 
 

EICO 324

Post by John Goller, k9u » Sat, 11 May 2002 23:49:20



says...

Quote:

>Ok, so the center of the "RF OUT" goes to pin #6 of the 1LC6, where
>does the shield go?  To B- ?  or to the chassis?

>I'm sure it's obvious to most of you but I can't find any where that
>it says exactly how to hook up the SG with the radio. I have a copy of
>the instruction manual but it's not any too detail about the
>connections.

>Once again, thanks.
>Randy

Yes Randy.....shield goes to the chassis ground.......you want to watch it
on this radio and perhaps others that are AC/DC.......AA5's.......no
tranformers in them........as one side of the AC line is perhaps hooked to
the chassis......so plugging in the radio......wrong direction.....and
connecting a ground to the chassis = popped curcuit breakers and maybe the
radio........check with your voltmeter before U hook it up........
John k9uwa
 
 
 

EICO 324

Post by Ted Peters » Sun, 12 May 2002 04:27:42


Quote:

> WELL PERHAPS YOU SHOULD RUN ANOTHER BLIND TEST USING SEVERAL OF EACH
> TYPE, IN THIS WAY YOU WILL KNOW FOR SURE. . . . .

Okay, Bill I'd be happy to, if you care to send them to me.