I have an old B&K tube Dyna Quik tester Model 550. It tests all the
tubes that I normally use or need and has been reliable.

My question is this. The B&K tester I have is a "Dynamic Mutual
Conductance" tester and some of the (new) tubes I test, do not seem
to measure up using the RED/YELLOW/GREEN scales.

I have always gone by the "go/no go" method using the
RED/YELLOW/GREEN scales and never paid any attention to
the "Micromhos" scale. I recently referred to my old RCA Receiving
tube manual and noticed that each tube in the book has
a "Transconductance" value in micromhos.

I am now debating with myself if I should ignore the colors and
actually start to pay attention to the micromhos scale on the tester.

If this is so, could I use my old RCA receiving tube manual which
gives the Micromhos number for the tubes and compare this published
number with the one on the tube tester meter scale even if it is not
in the green? Is Transconductance the same as Mutual Conductance?
Thanks for any help with this.

K2WH

开云体育

---

Celebrate Yahoo!'s 10th Birthday!

I've only been involved with Hallicrafters equipment a year or so,
so I have a lot to learn. From what I have read, all the HT-3#
series transmitters (excluding linear amps) use the same finals and
drivers. My HT-30 is 30watts output and I have read the others range
from 85 to about 135 watts out. Why is there such a difference in
outputs, is it the power supplies or what?

73,
Ed-KV5I

开云体育

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Celebrate Yahoo!'s 10th Birthday!

What exactly are you looking for?? I believe I have a few extra HT-32
knobs.? They are damaged but the inserts I believe are OK.

K2WH

--- In HallicraftersRadios@..., w4awm@a... wrote:
> Well, here is another thought...Try Gary Brown, WZ1M????
gkbrown@g...
>
> He parts out old Hallicrafters rigs and might just have the
complete knob. By
> the way, he is also an expert transformer rewinder!
>
> 73,?
>
> John, W4AWM

__________________________________________________
Do You Yahoo!?
Tired of spam? Yahoo! Mail has the best spam protection around
http://mail.yahoo.com

What exactly are you looking for? I believe I have a few extra HT-32
knobs. They are damaged but the inserts I believe are OK.

K2WH

--- In HallicraftersRadios@..., w4awm@a... wrote:

Well, here is another thought...Try Gary Brown, WZ1M

gkbrown@g...

He parts out old Hallicrafters rigs and might just have the

complete knob. By

the way, he is also an expert transformer rewinder!

73,

John, W4AWM

Hi,

Try Charlie Talbot, K3ICH???? pincon@...? Hi has inserts for different types of lnobs and may be able to help you.

73,

John,? W4AWM

---

Celebrate Yahoo!'s 10th Birthday!

All I really need is the insert, but I'll purchase the knob as well
if need be.My rig is an HT-30, but I know the same size is used on
the SX-100 receiver and I think the HT-3# series of transmitters.
The insert measures approx. 1.367 inches in diameter.
Thanks,
Ed

I am in need of an HT-32 front panel with or without the black
bezel. The panel should be perfect or near perfect.

Please send replies and prices to: K2WH@...

K2WH

For Sale:

Hallicrafters hand microphone

I don't know the model number, but it has the Hallicrafters
"h" logo on it. It is fairly small, and gray in color. It has
velcro riveted to the back, and a 4 pin plug on the end of
the coiled cord. It may have come from an SR-42, but I
am not certain of that. It is in nice shape.

$35 plus shipping from Florida.

Thanks.

73,

Ken, W8EK

Ken Simpson
E-mail to W8EK@... or W8EK@...
Voice Phone (352) 732-8400

--- In HallicraftersRadios@..., "William P. Gerhold" <k2wh@o...>
wrote:

Anyone out there have an SX-111. I have one and have been using it on
the air however, I recently installed an outboard preamp (Solid
state) that helps the receiver quite a bit.

I installed the preamp because the receiver seems so deaf from 20
meters and up. 80 and 40 are fine. I did a complete tune up
including front end and both IF's. I checked the tubes and all seem
OK. Is it possible the front end of this receiver is very good on 80
and 40 and stinks on the higher bands?

K2WH

Hi Bill,
I've had a SX-111 for 3 or 4 years which I use mostly on 40 meters. It has always
seemed quite sensitive when I compare it to my other Hallicrafters receivers (SX-28,
SX-42, SX-62, SX-71, and SX-100). My antenna is a 40 m dipole up quite high (75
feet) so that might be the reason for good reception. I'm tempted to try the preamp
though. By the way, I enjoy the SX-28 right behind the SX-111 for listening.
73, Skip Magnuson W7WGM

Yes. Click on "Files" on the left hand side of the screen. In the
files section, you will find (2)MSword files with the information you
need.

As to the SX-42 labels, I do not have labels (yet) for the SX-42.
Apparently they are rare.

Regards,
Bill K2WH

--- In HallicraftersRadios@..., "magnuson27"
<magnuson@m...> wrote:

Hi Bill,
Do you have a list of the Hallicrafters you have labels for (and

could it be posted)?

Also I think Craig Roberts would like labels for a SX-42. I

think only SX-42 and SX-

42U were made and not a 42A.
Skip Magnuson

--- In HallicraftersRadios@..., "magnuson27"
<magnuson@m...> wrote:

Hi Bill,
Do you have a list of the Hallicrafters you have labels for (and

could it be posted)?

Also I think Craig Roberts would like labels for a SX-42. I

think only SX-42 and SX-

42U were made and not a 42A.
Skip Magnuson

Hi Bill,
Do you have a list of the Hallicrafters you have labels for (and could it be posted)?
Also I think Craig Roberts would like labels for a SX-42. I think only SX-42 and SX-
42U were made and not a 42A.
Skip Magnuson

--- In HallicraftersRadios@..., "William P. Gerhold" <k2wh@o...>
wrote:

I should mention, the many images I have of labels and tags on Halli
equipment are actual images of real labels but are usually not "Art
Ready" for printing on your printer and pasting into your restored
radio.

A lot of them are complete and ready to print but due to shooting
angles, lighting etc. some of the images will show you exactly what
the label looks like and you can then make one with your own graphics
program and printer if so desired. Depends on how much of a purist
you are.

I saved as many as I could since these lables will eventually be lost
to history since they are so fragile at this stage of their life.

Bill
K2WH

I should mention, the many images I have of labels and tags on Halli
equipment are actual images of real labels but are usually not "Art
Ready" for printing on your printer and pasting into your restored
radio.

A lot of them are complete and ready to print but due to shooting
angles, lighting etc. some of the images will show you exactly what
the label looks like and you can then make one with your own graphics
program and printer if so desired. Depends on how much of a purist
you are.

I saved as many as I could since these lables will eventually be lost
to history since they are so fragile at this stage of their life.

Bill
K2WH

开云体育

Hi Bill,

Thank you for the new discussion group and the labels offer. Actually, I'd appreciate the two SX-42A labels. I've finished the recapping of my receiver (with as many resistors as caps swapped) and will begin the alignment and cosmetic work this weekend.

Thanks again and 73,

Craig
W3CRR
www.aerialacts.com