Hello Don.
I live off 290 and 1960/HWY 6 area.
I orders a NorCal QRP FCC2 DDS kit with the FCC1 Display. I am hoping to set
it up to run different rigs, as needed.
It sounds like you have a great setup up there in TN!
You really have a full size, 1/4-wave Vertical for 160 Meters?!?!?!?!
Bow
The following Eimac Tetrodes are listed in the Product Section in the 1947
Radio and Engineers Handbook:
4-65A, 4X100A, 4-125A, 4X150A, 4-250A, 4X500A and 4-1000A.
I talked with their Engineering Department today and they confirmed that the
4-400 series began production in
the very late 40's an
Good idea, Craig. However, what I'd like to know is when did RCA start
making them?
73,
Rick/K5IZ
To All,
Looking at an old 1958 ARRL handbook, the 4-400A is listed in the tube data
pages. Can't go back further. This is the oldest in the library, besides I
was but a mere lad at that date.
73's
To All,
Looking at an old 1958 ARRL handbook, the 4-400A is listed in the tube data
pages. Can't go back further. This is the oldest in the library, besides I
was but a mere lad at that date.
73's
wd8kdg
Craig
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- Original Message -
From: <[EMAIL PROTECTED]>
To:
Sent: Friday, March 23, 2007 1:09 PM
Subject: Re: [AMRadio] 4-400 first made when?
> Brad and the group,
>
> My posting said 20Jno such animal to my knowledge. My
> age is allowing the thoughts of the 20V2 and the 300J
Brad and the group,
My posting said 20Jno such animal to my knowledge. My
age is allowing the thoughts of the 20V2 and the 300J to run together.
I should have said, "the transmitter was a Collins 300J and the upgrade
made it a 20V-2." Now I feel better. I'm reasonably sure
Hello all,
I'm a new guy to the AM Radio list, my Name is Scott, my friends call me
Bow
(like bow and arrow).
I am located on the northwest side Houston, TX and I like to homebrew.
I have built quite a few tube guitar amps and such from scratch, and now I
am interested in cooking up an AM tran
It's c82, 70 uuf SM.
Grant/NQ5T
> -Original Message-
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] On Behalf Of Jim Wilhite
> Sent: Friday, March 23, 2007 2:47 PM
> To: AM Radio Discussion List; WRL Mailing list
> Subject: [AMRadio] Globe Champ 350
>
> Hi All:
>
> If anyone ha
Hi All:
If anyone has a manual on the Globe Champ 350, would you
take a look at the diagram and identify a capacitor for me?
It is in parallel with RFC2 and C 21 on the cathode of V2
the Xtal osc/Buffer.
I have the download version of the manual from BAMA, but
that component marking is not
- Original Message -
From: "John Lawson" <[EMAIL PROTECTED]>
To:
Sent: Friday, March 23, 2007 7:16 AM
Subject: [AMRadio] 4-400 first made when?
>In doing some research - I notice that the 4-400 seems to be a fairly
> late arrival, at least as far as RCA is concerned. It's in none of
I've not researched the 4-400, but I can say for sure we replaced the
4-125's with 4-400's when we upgraded our broadcast transmitter from
.25kw to 1kw around 1961. The transmitter was a Collins, 20J and the
upgrade made it a 20V-2.
73 de W4MIL
Chuck
Chuck, and the rest of the group,
I ha
I've not researched the 4-400, but I can say for sure we replaced the
4-125's with 4-400's when we upgraded our broadcast transmitter from
.25kw to 1kw around 1961. The transmitter was a Collins, 20J and the
upgrade made it a 20V-2.
73 de W4MIL
Chuck
-Original Message-
From: [EMAI
The info I posted has been confirmed by phone call to Eimac
73, Bob
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Stop the presses! In my haste, I overlooked the 4-400 in my HB-3 manuals or
maybe it's misfiled. In the Transmitting Volume, just before the 9C25 and
just after the 3B28 I found it! I'd say it's out of place in my books. The
date of production listed at the bottom of the page is 9/62, so that w
Data Point: The first mention, in QST, in April 1957 -- A 4-400A amp..
73,
Larry
KQ4BY
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I have an HB-3 here that shows a data sheet for the 4-400A dated 9-62.
I also have an Eimac catalog from the early 1950s that shows the 4-400.
73, Barrie, W7ALW
- Original Message -
From: "John Lawson" <[EMAIL PROTECTED]>
To: "Discussion of AM Radio in the Amateur Service"
Sent: Frida
On Fri, 23 Mar 2007, Bob wrote:
According to the info that I have, they were in production in 1950. They
were not listed in the 1948 data sheets. So it could be between 1948 and
1950.
Hope this helps.
Actually, this deepens the Mystery - both my HB3s reach from the late
30s to the ea
According to the info that I have, they were in production in 1950. They
were not listed in the 1948 data sheets. So it could be between 1948 and
1950.
Hope this helps.
73,
Bob, W4WSZ
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You guys who love to grunt about eBay driving the prices of Boatanchor Gear
might want to re-read Tim Shoppa's last two posts... I think we're getting
into our own version of the Global Warming Debate... HIHI!
There exist a number of eBay-specific research tools and applications. Mos
In doing some research - I notice that the 4-400 seems to be a fairly
late arrival, at least as far as RCA is concerned. It's in none of my
HB-3s, not in my 1962 TT5, but is in the 1975 TT5 manual. Since my
transmitting tube library has this 12-year gap, I'm assuming RCA began to
produce
Thanks Jim.
How come I couldn't find that PDF on the AM Window site? I must not have the
secret decoder ring yet! LOL
I would love to try a QSO on AM.
7PM is a bit to early for my to play Radio on a Friday night! I am a full
time collage student at night, work full time during the day, and I'm
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