Re: [AMRadio] Where is QSL.net???

[Mark W1EOF]

I've have not been able to get into QSL.NET for days now. All of a 
sudden tonight  it shows up.


They come and go. Patience is needed with qsl.net

73,

Mark W1EOF

W7CE wrote:
I'm having trouble getting onto QSL.net.  Is it just me or is it 
QSL.net?


73 from Steve White, W5SAW


I can't get to it either.  Must be an Internet routing issue.  These 
problems are usually solved quickly.


Clay  W7CE


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Re: [AMRadio] Magnet Wire

[Mark W1EOF]

Rick - I never heard anything more from you on the relay covers. I can 
probably get you the wire you need. I have it available from 12 - 59 
AWG. Either send me a sample, or measure it with a micrometer and let me 
know the dia.


73,

Mark W1EOF


ary wrote:

Rick, just send me a sample, I can measure it and you tell me how much you
mite need.
Gary...WZ1M
- Original Message - 
From: "Rick Brashear" <[EMAIL PROTECTED]>

To: 
Sent: Wednesday, May 16, 2007 12:46 PM
Subject: [AMRadio] Magnet Wire


After receiving advice from several of you I have decided to rewind the
neutralizing coil on the BT-20-A.  It will take a little less than 200 feet
of ?? gauge enamel wire.  I have to measure it to be sure, but I think it's
20 gauge.  I haven't done this type of winding in many years, so can someone
suggest a particular brand or type of wire or can I just assume a quality
enamel coated magnet wire will be fine?

Thanks,
Rick/K5IZ

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Re: [AMRadio] Tube socket info needed

[Mark W1EOF]

Ooops... I stand corrected.

73,

Mark W1EOF

Larry Szendrei wrote:

Edward B Richards wrote:

Hi all;

Can someone tell me if a 4D32 and a 832A use the same tube socket?




Yep, they do. As a matter of fact Johnson said an 829 could be subbed 
for the 4D32 in the Viking 1, with some rewiring of the socket.


-Larry/NE1S

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Re: [AMRadio] Tube socket info needed

[Mark W1EOF]

They look similar but they are not the same. The 832 has very thin... 
wire like pins. The 4D32 has much larger pins, at least on the filament.


73,

Mark W1EOF


Edward B Richards wrote:

Hi all;

Can someone tell me if a 4D32 and a 832A use the same tube socket?
Someone was wanting sockets for the 4D32 and I have some sockets for the
832A. They look similar but I don't have a tube to try in them. Thank
you.

73 from Ed Richards K6UUZ
Simi Valley, CA. Home of Air 
Force 1 pavallion

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Re: [AMRadio] WTB: National R-175 plate choke or equiv

[Mark W1EOF]

I think I'm all set on that one. Thanks to all on the list
who responded to my call for a plate choke for my amp.

73,

Mark
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[AMRadio] WTB: National R-175 plate choke or equiv

[Mark W1EOF]

I need a nice plate choke for my 813x2 amp. I was going to homebrew one 
now I'm thinking that there will be enough variables without that. I'm 
going for operation on all bands 160-10. So I'd rather use a known good 
design plate choke like the National R-175. Anybody got one for sale or 
trade?


73,


Mark W1EOF


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Re: [AMRadio] Current on 6146s

[Mark W1EOF]

Isn't 15ma *WAY* too much grid current for a pair of 6146s? In my Viking 
II I used to run about 6-8 if I recall correctly. They can be easily 
destroyed pretty quickly by too much grid current.


73,

Mark W1EOF


Jim candela wrote:


>From John E. Coleman (ARS WA5BXO):


I have found it to be very important to make measurements while in
operation.  Except that RF will mess up the meter readings.  This is why I
said to ground the grid directly and then kick the rig to XMIT and make the
measurements then.  Checking the plate voltage on the plate while the tube
is cut off is not conclusive as there may be a high resistance between the
plate point and the power supply point (all the way back in the power supply
circuit) and same could be true of the screen.  This would cause the plate
voltage to appear normal until you draw current then it may drop real low at
the plate point but still be good at the power supply.  RF at the plate will
cause the meter to read wrong and grounding the grid will kill the bias and
RF.  If the rig were operating normal then grounding the grid would cause
excessive plate current so this is a good check any way.

1. While in XMIT mode, when you ground the grid, the plate current should go
above 200 ma. If it does, then troubleshoot the grid circuit.

2. If it does not, then leave the ground on the grid and stay in XMIT mode.
Then measure the plate and screen voltages.  One of them is surely wrong.
The only other possibility would be the filaments are not lit up good.


Rule for the day:
You can't have a 100 volt drop across a good 5ft #12 wire with out a fire.
John



Reply by Jim, WD5JKJO:

 John, all good points for sure. I take a different approach that seems to
work here. I have two HV probes, a 40KV probe at 1000X, and a 6 KV probe at
1000X . The resistors in these probes combined with the coax cable
capacitance make a very effective low pass filter. This filters out the RF
leaving just the DC. I touch the probe directly to the RF hot plate of a
tube to read the plate voltage with my trusty DVM. I recently tried this on
my 8877 amplifier, and it worked well even though the amplifier was running
full boar into a dummy load (900w carrier or 2100w PEP SSB).

These probes are not that expensive. Those of us that need to measure above
600 volts with a DVM should use a HV probe. It is safer for both the HAM,
and the DVM. Here is one on Ebay:

 Item number: 290080656981


Regards,
Jim
JKO

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RE: [AMRadio] New Year's Resolution-Getting Back on AM!

[W1EOF]

Hi Geoff,

Do you continue to feed the antenna at the apex, or did you move it?

What do you use for feedline (coax, ladderline, etc)??

Thanks.

73,

Mark W1EOF

> -Original Message-
> From: ARS W5OMR [mailto:[EMAIL PROTECTED]
> Sent: Tuesday, December 26, 2006 4:15 AM
> To: Discussion of AM Radio in the Amateur Service
> Subject: Re: [AMRadio] New Year's Resolution-Getting Back on AM!
> 
> 
> On 12/26/06, Bob Scupp <[EMAIL PROTECTED]> wrote:
> > Geoff-
> >
> > Thanks very much for all the great info on your
> > improvements and additions to your G5RV.
> 
> I don't think you understand.  I'd -never- use a G5RV antenna.  I've
> never heard one that I thought was worth of using for a transmitting
> antenna.  Some people might argue that fact.  If it works for them,
> fine.  I've tried one before, and was never happy with it.
> 
> The antenna I'm talking about, started as a 75m Inverted vee, apex'ed
> around 60'.  In order to build the loop, I merely closed in the bottom
> of the loop.  MY Loop is only 240~250 over-all feet long, that is 60'
> tall, 120' wide and 20 or so feet off the ground.  Shaped like a
> Pyramid, or a Tri-angle, the antenna is called a "Delta Loop", and
> it's a full-wave length on 75m.  Works like a bomb on 75m, and even
> better on the higher frequency bands.
> 
> IF I had the room, I'd do the same thing, for 160m, except I'd want
> the feed point to be -at least- 120' in the air.
> 
> > BTW- I fully agree with K4KYV's statement about the
> > necessity of using a scope to monitor your AM signals.
> > That's something else I will have to work on.
> > When I get to that point I sure do have a great group
> > of AMer's to guide me!
> 
> Otherwise, you never know what's happening in your transmitter.
> 
> There are others that say that monitoring your envelope pattern isn't
> good enough, if you have a scope... you should be watching the
> Trapezoid pattern, instead.
> 
> Well, I've got a dual-trace scope... I just might start watching both ;-)
> 
> 
> Hope you (and everyone) had a great Holiday, whatever you 
> celebrate, if you do.
> 
> 
> --
> Operating your AM rig without a scope
> is like driving our car at night without headlights.(~K4KYV)
> 
> 73 = Best Regards
> -Geoff/W5OMR
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[AMRadio] Coto Coil information

[W1EOF]

Anyone have a Coto Coil catalog, datasheet, or price list scanned? 
I've got a knob which I believe is Coto but I can't be sure.

Will be grateful for ANY information or pictures of Coto Coil.

73,

Mark W1EOF
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RE: [AMRadio] RG8X

[W1EOF]

Yup, it does Jim.
Makes sense that in the big cities they would have cell long before the rest
of us.
Thanks for clarifying it for me.

73,

Mark W1EOF


> -Original Message-
> From: Jim Wilhite [mailto:[EMAIL PROTECTED]
> Sent: Friday, December 08, 2006 9:12 PM
> To: Discussion of AM Radio in the Amateur Service
> Subject: Re: [AMRadio] RG8X
>
>
> I was manager of a mobile radio service center in Dallas in
> 1983 when they turned on the cell service there.  It was the
> first commercial system after Chicago and Washington.  Each
> trunk mount radio had RG 58 attached to the antenna mount.
>
> About 3 years later they used the RG 8 types with the mini
> UHF connector.  Does that fit your time frame Mark?  It was
> around but not in common usage.
>
> Jim
> W5JO
>
>
>
>
> >
> > I agree with Jim except I'm not sure about the part "RG-8X
> > came out after
> > cellular hit the market".
> >
> > I started using RG8X about 1980 or so. Not many people
> > around here had
> > cellphones until the mid-90s. It has always worked great
> > for me on
> > 50/144mhz. Also on a couple of 50ohm antennas. Most of
> > what I do uses
> > ladderline now. It's good for low-moderate power.
> >
> > 73,
> >
> > Mark W1EOF
> >
>
>
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RE: [AMRadio] RG8X

[W1EOF]

I agree with Jim except I'm not sure about the part "RG-8X came out after
cellular hit the market".

I started using RG8X about 1980 or so. Not many people around here had
cellphones until the mid-90s. It has always worked great for me on
50/144mhz. Also on a couple of 50ohm antennas. Most of what I do uses
ladderline now. It's good for low-moderate power.

73,

Mark W1EOF

> -Original Message-
> From: Jim Wilhite [mailto:[EMAIL PROTECTED]
> Sent: Friday, December 08, 2006 3:47 PM
> To: Discussion of AM Radio in the Amateur Service
> Subject: Re: [AMRadio] RG8X
>
>
> Well Rick, RG 8X came out after cellular hit the market.  It
> is small and reasonable flexible.  It is about the same size
> as RG 59 and has a bit more loss than RG 213.  So it is
> perfect for UFH frequencies and installations in an
> automobile.
>
> Some of it has foam core around the center conductor and I
> would not use that at all.  Should you kink or bend it too
> much, the foam will loose it circular shape allowing the
> impedance to change at that site.  You can avoid that by
> following the installation rules of all wires.  The bend
> radius of wires of any sort is 10 X the diameter.  So if you
> have a .5 inch cable then the bend radius is 5 inches.
>
> According to the specs it will handle 1500 watts.  If you do
> it, be careful of installing connectors.  Should you
> overheat the connector the heat will deform the foam near it
> and that can cause problems.  I personally don't like the
> stuff, but that is my personal preference.
>
> Jim
> W5JO
>
>
>
>
> > Has anyone used this coax (RG8X) in lengths of about 100'
> > for legal limit AM work?  If so, how does it compare loss
> > wide to the larger coax on 75 meters?
> >
> > Thanks,
> > Rick
>
>
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RE: [AMRadio] SS nice guy report

[W1EOF]

> There's a lot of poor operating going on out there such as 'belching',
> operators getting "half-in-the-bag" where upon every other is F-this and
> F-that, strapping wars, etc.

> Mod-U-Lator,
> Mike(y)
> W3SLK


OK... If we're airing dirty laundry, there is a "third rail" which on one
seems to address: TIMTRON

Tim, WA1HLR along with Chuck WA1EKV, etc were the first ones I know of
acting like that on the AM in 1971. Tim still belches and use bad language.
I like Tim for many of the things he has brought to ham radio, but I've
always been amazed at how many AM'ers seem to overlook... no, accept his
behavior. Worse yet are the weird kind of guys, the "wannabees" who are
imitating his speech on the air. There are certain AM hams who are treated
like gods yet there behavior is anything buy heavenly.

My Dad accomplished something amazing: He convinced a typical snot-nosed
fifteen year-old who thought he knew everything, thought his old man was
"square", that ham radio and the airwaves were SPECIAL. That when you were
on the air, or even at a hamfest, you were representing every ham. You had
an obligation to treat it with respect. He also used to say all the time
"You never know who is listening." So even when the 3885 would come on high
or drunk, use foul talk, and then play Led Zeppelin for 30 mins... I *never*
thought it was cool. Never thought it was behavior I wanted to emulate. I
did all kinds of things that I'm now ashamed of and regret. But I always
acted like a gentleman on the air.

By the way when people would remark that incentive licensing or  had
caused 75 meters to go downhill he would laugh and say "There always has
been clowns in radio. I remember back in the 1920s there were guys who acted
like that. It's only a small percentage so you're best off ignoring them and
being one of the good guys". So this is not a new phenomenon.


That's my $.02

73,

Mark W1EOF

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RE: [AMRadio] Experience with Ocean State Electronics (PICS)

[W1EOF]

> Any of our RI area BA'ers have contact with them?

I do. I went down and visited them... I think it was about 16 months ago.
It's a very small place. Not really setup for walk-in business. I rang a
doorbell on the side of the building. After a few minutes a guy came to the
door and said "come on in." I told him what I wanted and he went and got it.
Lots of aisles with shelves to the ceiling. It's pretty much most of the
building in the pictures. Stuff stacked up EVERYWHERE. A very busy packing
bench. Piles of boxes ready for the UPS guy.

Looks like a one man band to me. He was polite, but not very friendly. I'm
guessing he didn't want to encouarge me to come down and hang-around the
place. (*) He came back out and had some MPF-102, a few other things but the
cast LMB box was "on back order." I don't think there was a back order
exactly. I think it's just he cannot afford to have everything in the
catalog in stock.

There has been complaints with this operation since I can remember. I've
heard lots of complaints about late shipments, but never someone getting
ripped off. I acna guess he has two problems:
1. It's a one man operation so he gets behind at times. (small)
2. He is running things on a shoestring and has cash=flow problems 
(large)
Been there. The more successful you are, the bigger the cash flow problem.
It's a tough one.

In my opinion charging peoples credit cards and then not shipping is
unacceptable. Not answering emails or the phone makes matters much much
worse. I'll bet it's because he does not have a good answer for you. You
will get your parts when he gets his money and then he can order his parts.

So I'd say be patient. Unless he goes belly-up, you *WILL* get your stuff.

A coule of pictures of the building:

http://www.hamnutz.com/w1eof/ose/ose1.jpg

http://www.hamnutz.com/w1eof/ose/ose2.jpg


Finally let me say I have no interest in OSE in any way other than being a
customer. I dont' have an axe to grind with him, nor do I want to play the
role of cheerleader. I'm simply stating things the way I see 'em.

73,

Mark W1EOF

(*) When I was a kid my Dad would take me to WH Edwards in Providence. Dad
had worked there back in the... late 30s?. He would tell me stories about
the day the first superhet from Hallicrafters came in. People, and
especially hams were ALWAYS hanging around. I would go in with Dad and climb
up on one of the stools with the rotating cushion on it. There was always
some large glass ashtrays on the counter with one, two or more smoldering
cigs in them. A Hickcock tube tester on a stand so you could check m before
buying new ones. The walls were plastered with cardboards from the tube/tv
manufacturers. Zenith. GE. Sylvania. Plus the obligatory cartoons or dirty
jokes which I only half understood but always made it a point to laugh at so
I wouldn't seem like a snotty nosed kid. Sorry for the long story... but
thinking about the treatment at OSE made me remember the day when a merchant
WANTED people hanging around.



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RE: [AMRadio] 183D vs 303 ?

[W1EOF]

According to one ad it has "Calibrated amateur band spread for 6, 10-11, 15,
20, 40 and 80 meter bands" which I assumed meant that it had bands which
would act (bandspread-wise) like a ham only receiver. I've never owned one
so I'm not familiar with the terminology.

73,

Mark W1EOF


> -Original Message-
> From: Peter Markavage [mailto:[EMAIL PROTECTED]
> Sent: Monday, October 02, 2006 9:02 PM
> To: amradio@mailman.qth.net
> Subject: Re: [AMRadio] 183D vs 303 ?
>
>
> NC-183D is general coverage.
> NC-303 is ham band only.
>
> Pete, wa2cwa
>
> On Mon, 2 Oct 2006 20:50:27 -0400 "W1EOF" <[EMAIL PROTECTED]> writes:
> > Anyone have experience with a National NC-183D?
> >
> > Anyone have a NC-303 for sale? I need a radio that had the National
> > X-band
> > that is compatible with my Johnson 6N2 converter. I was supposed to
> > pick one
> > up at Hosstraders but I found out tonight the guy "thought I wanted
> > the
> > 183D" which is B-S. Funny thing this is the SECOND time someone has
> > promised
> > to sell me one and then backed out of the deal. I suspect they both
> > found a
> > higher price for it elsewhere.
> >
> > Anyway, what's up with the NC-183D, and how would it compare to the
> > NC-303?
> >
> > 73,
> >
> > Mark W1EOF
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>

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RE: [AMRadio] 183D vs 303 ?

[W1EOF]

According to one ad it has "Calibrated amateur band spread for 6, 10-11, 15,
20, 40 and 80 meter bands" which I assumed meant that it had bands which
would act (bandspread-wise) like a ham only receiver. I've never owned one
so I'm not familiar with the terminology.

73,

Mark W1EOF

> -Original Message-
> From: Peter Markavage [mailto:[EMAIL PROTECTED]
> Sent: Monday, October 02, 2006 9:02 PM
> To: amradio@mailman.qth.net
> Subject: Re: [AMRadio] 183D vs 303 ?
>
>
> NC-183D is general coverage.
> NC-303 is ham band only.
>
> Pete, wa2cwa
>
> On Mon, 2 Oct 2006 20:50:27 -0400 "W1EOF" <[EMAIL PROTECTED]> writes:
> > Anyone have experience with a National NC-183D?
> >
> > Anyone have a NC-303 for sale? I need a radio that had the National
> > X-band
> > that is compatible with my Johnson 6N2 converter. I was supposed to
> > pick one
> > up at Hosstraders but I found out tonight the guy "thought I wanted
> > the
> > 183D" which is B-S. Funny thing this is the SECOND time someone has
> > promised
> > to sell me one and then backed out of the deal. I suspect they both
> > found a
> > higher price for it elsewhere.
> >
> > Anyway, what's up with the NC-183D, and how would it compare to the
> > NC-303?
> >
> > 73,
> >
> > Mark W1EOF
> __
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>

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[AMRadio] 183D vs 303 ?

[W1EOF]

Anyone have experience with a National NC-183D?

Anyone have a NC-303 for sale? I need a radio that had the National X-band
that is compatible with my Johnson 6N2 converter. I was supposed to pick one
up at Hosstraders but I found out tonight the guy "thought I wanted the
183D" which is B-S. Funny thing this is the SECOND time someone has promised
to sell me one and then backed out of the deal. I suspect they both found a
higher price for it elsewhere.

Anyway, what's up with the NC-183D, and how would it compare to the NC-303?

73,

Mark W1EOF

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[AMRadio] K5DLE - SK

[W1EOF]

>From the QCWA list:

> Gene Nailon, K5DLE is now a SK.  He passed 
> away about 20 minutes ago at his shop in OKC. The
> possiblity was from a heart attack.

As far as I  know Gene was not a member of this list.
Maybe some of you knew him so I thought I would pass
this along. A loss of any brother or sister in this
hobby is a loss for all. Rest in Peace OM.

73,

Mark W1EOF
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[AMRadio] Cool tubes

[W1EOF]

After a discussion about crazy application of tubes I got Bobs permission to
post these two pictures on a webpage. Figured you might enjoy a...
pair of water cooled 6L6s:  http://www.hamnutz.com/w1eof/n2ixk/

73,

Mark W1EOF

RE: [AMRadio] Hardware for potentiometer

[W1EOF]

I knew a guy many years ago that produced pot for nuts. I think that's
different.

This was back in the day when HLR and EKV would be on 3885 and right after
they signed you'd hear Led Zeppelin come blasting throuh the radio.

73,

Mark W1EOF
WN1PWA/WA1PWA at the time.


> -Original Message-
> From: John E. Coleman (ARS WA5BXO) [mailto:[EMAIL PROTECTED]
> Sent: Friday, August 18, 2006 4:22 PM
> To: 'Discussion of AM Radio'
> Subject: RE: [AMRadio] Hardware for potentiometer
>
>
> Maybe I could manufacture nuts for pots,

RE: [AMRadio] Legal-Limit tuner advice....?

[W1EOF]

Keep in mind that while the "T" tuners can match a wider range they also can
be mis-tuned into a mode where a lot of power is consumed in the coil yet
all looks good. This can't happen in a PI network for instance. It's a good
reason to have one or more RF ammeters around for monitoring your antenna
current.

I prefer a link-coupled tuner like the MB for balanced loads, a parallel
type tuner for end-fed wires and such, and a PI for coax-fed antennas. I can
tune my Zepp from 80-10 including WARC bands with the MB. For 160 I can feed
it as a "T" through a special link-matcher. You'll find many different
opinions except that I think everyone agrees the MFJ tuners are very cheaply
made. I have a 949 that I don't use that much... it's got flimsy components
in it. Fine for say 100W I guess but no more. The switches feel flimsy too
when you rotate them. I wouldn't recommend one that's for sure.

73,

Mark W1EOF

> -Original Message-
> From: John Lawson [mailto:[EMAIL PROTECTED]
> Sent: Friday, August 18, 2006 12:52 AM
> To: [EMAIL PROTECTED]
> Cc: amradio@mailman.qth.net
> Subject: Re: [AMRadio] Legal-Limit tuner advice?
>
>
>
>
> On Fri, 18 Aug 2006, [EMAIL PROTECTED] wrote:
>
> >
> > In a message dated 1/12/06 8:31:16 AM, [EMAIL PROTECTED] writes:
> >
> >> On Wed, 11 Jan 2006, [EMAIL PROTECTED] wrote:
> >>
> >>>>
> >>> Quick and dirty, just try grounding one side of your
> ladder-line at the
> >> input
> >>> end and feeding the other side off the single ended output of
> your ATU and
> >>> see what happens.   SWR figures might be better (but could
> also be worse).
> >>
> > John,
> >
> > Did you ever try this?   If so, what were the results?
>
>
>Yes, I did - results not good at all, antenna would not tune and the
> Transmitter complained at me bitterly...  ;}   I also built in a DPDT
> knife switch in the feedline after the tuner - it's mainly for grounding
> during t-storms, but I played around with various
> (semi-calculated) values
> of capacitors and coils...  on 10 meters the use of various paralelled
> caps made improvements, but tuning became very critical, and there's
> nothing much that interests me up there - I *do* like to work 20M RTTY ,
> and have yet to try PSK32 into the Valiant.
>
>I'm still gathering facts, and the Listmembers have been quite
> helpful -
> everyone likes the Palstars, but the big Ten-Tec also has impressive
> specs  I intend on converting a broadcast transmitter for use in the
> shack, so the Tuner needs to be able to withstand 100% duty-cycle at
> Legal Limit.  Ultimately I'll tune the feedpoint of the antenna itself,
> and just run 50-ohm line from the transmitter out to the
> "doghouse" if you
> will.
>
>
>Cheers
>
> John  KB6SCO
>
> Who just shut the rigs off after a nice AM QSO on 80
>
>

RE: [AMRadio] Packaging Radio Gear

[W1EOF]

As people have stated, it's a combination of both. People cared more about
their work back then and probably took better care in how they handled
stuff. There was less pressure to "just get the stuff outta here" than now
I'm sure.

Secondly it does not matter whether so much whether you use a particular
material or not, it's HOW the materials are put together that matter.
Someone in a reply said it doesn't matter how it's packed if it gets dropped
six feet. I think you are stating my second point from a different angle. I
wouldn't send a Valiant out my door unless I felt confident... yes,
confident that it could withstand a six foot drop. Probably an eight foot
drop. That's not unusual and std packing procedure for a business. It's not
hard to do but it takes a little work and more than that it takes thought on
how it should be boxed. I've sent hundreds of items around the world.
Fragile glass items. Heavy radios. I never had one damaged in transit. ALl
of those packages were expected to withstand at least a six foot drop.

As an example, here is what I would do with a small-medium sized
transmitter:

1. Remove the tubes. They get individually wrapped in bubble-wrap and
shipped separately. Any other loose pieces get sent separately in another
box. If you want you can in some case wrap that stuff up and put it inside
but if you want to be sure, pack it separate.

2. Depending on the tranmitter, it's value, etc I might need to make a
wooden support for the transformers.

3. Wrap this up in both directions with bubble wrap. The one with the bigger
bubbles, not the small-bubble kind. Tape it good. There should be at least a
couple of inches of bubblewrap on every surface.

4. Using bubblewrap or high-density foam fit this assembly into a box. Not a
bad idea to put it into a heavy garbage bag and tape before it goes in the
box.

5. Tape this box up. Tape it up GOOD. If heavy use strapping tape as I
describe below. Now this is where many people would stop. It looks like it's
ready to go, right? Well many people would ship this out but it's not ready.

6. Get ANOTHER, larger box. ALlow for 3-4 inches in every direction. In
between the two boxes you need some cushion. I pesonally like peanuts but if
you use them they must be packed DENSELY. You want the inner box to be able
to move a bit, but not much. Pack the peanuts in there tight. Tape this box
up tight. Then get your strapping tape and wrap two double bands of that in
each direction, each band about 25% of the way in from the edge of the box.
If the box is long then I'd add two more bands in that direction. The
strapping tape will prevent the box from bursting should it be dropped on a
corner for instance. It's very strong stuff.

You're done.

Now if the transmitter is really large, or extra heavy (say > 80 or 100lbs)
then you need to go to the next level and crate it. Basically you follow the
steps above and then put that assembly into a box that is made of plywood
with reinforced corners, etc. Making a suitable crate is somewhat of an
art... a story for another day.

If you follow those steps listed above you will be able to drop that
transmitter 6-8 feet without any damage to the box or the transmitter. It
will hit with a funny dull sounds and sort of bounce (which is what you
want, thats' the energy being absorbed and deflected not transferred to the
transmitter).

73,

Mark W1EOF


> Could someone explain to me how radios were shipped back in the
> 50's so that
> they arrived at the dealers with no apparent damage.  I wonder what the
> original packing was back then?

RE: [AMRadio] where to post For Sales

[W1EOF]

Paul -

SELLER - It's way too much work for guys like Don. He can send to multiple
lists using one email. With websites he'd need to login to each one, copy &
paste, etc, etc, etc. Then there's a matter of being considerate and
maintaining all those posts. He doesn't have to go back and email all of the
lists to let us know what was sold and what isn't. He would have to, or at
least should on website posts.

BUYER - I don't have time to go window shopping all around the net. If I'm
looking for a specific something then I do. But the majority of things I've
bought from Don (for instance) are because I became aware of them by reading
his emails. I read each and every one of Dons emails because I trust him as
one of the "good guys." I've always been very happy with the description,
price, packing, and the item coming from Don. So it's a great service to me
to get these emails from the "good guys".

That's my perspective.

73,

Mark W1EOF

PS: It was questioned whether changing the subject line to reflect a new
topic is part of the rules of this list. If not, it should be. It's been
considered good etiquette since the beginning of the net (actually way
before the net, it goes back to the BBS days). It just makes sense. How many
time have you read a post whose subject line doesn't even remotely reflect
the body text. Makes it hard to do that initial message triage. :-)


> I would like to understand why it is easier to sell
> via the mailing lists, Don.

> Paul/VJB

[AMRadio] Crimes and misdemeanors

[W1EOF]

" Think of it this way.  IF we can just be a little more intelligent than
our equipment, gentlemen, then these discussions wouldn't need to take
place. RULES are in place for a reason.  All anyone has ever asked, is that
they be adhered to."

Hmmm... I wonder... who could be that said that just a few days ago on this
very list? :-) What a classic Geoff!!!


My humble little vote is that:

1. We keep the rules as they stand. They are there for us all, and work
well.

2. That we keep our cool when the (obviously) best of us can make a mistake
once in awhile. I did a few weeks back and had to apologize. It was handled
offline and did not generate another blizzard of uninteresting posts.

3. That we remember the list is here for ENJOYMENT for all of us who share
this wonderful HOBBY. We *all* make mistakes now and again. All that is
really asked and required is that we make the very best effort to follow
the rules. When one of us doesn't, a private *off-list* reminder would be
best rather than a public tongue-lashing. It also would mean the cure was
not worse than the mistake.

Ok... that's my $.02 from a guy who can tell you with 100% confidence that
despite my very best efforts sometime in the future I WILL make a mistake.
Given my frailty as a human, I do appreciate your indulgences.

73,

Mark W1EOF

PS: I have to make note that the subject lines for all the messages about
this breaking of the rules do not properly reflect the true subject of the
body text. I believe this is a breaking of the rules.

RE: [AMRadio] Receivers

[W1EOF]

Rick,

Considering that EVERYONE should have an R-390, and the fact that you
don't intend on doing a lot of "band cruising" I think you have made
an excellent choice.

Not to sway you because it's an entirely different deal but... Last year
I was ove a buddy's shack and heard his HRO-SR with matching National
speaker for the first time. We were listening to some AM on 160M. It was
hands-down the finest AM reception I've ever heard. I don't want to sound
like one of the audiphool guys but it had a quality to it that was eerie.
It sounded like we were listening to a QSO from 1950. That night the HRO-SR
moved way up on my "Want to have someday" list. Other people have written
me to concur. Seems to have something to do with the wide IFs or something.
I don't know enough about the design to tell you. I can only say that it's
something to behold.

Even with that, I still think you can't go wrong with an R-390 for overall
use. Good luck in your search.

73,

Mark W1EOF

> -Original Message-
> From: Rick Brashear [mailto:[EMAIL PROTECTED]
> Sent: Monday, July 31, 2006 4:21 PM

> I hope to have all three one day, but for now I am hot on the trail of the
R-390.

> Rick/K5IZ

RE: [AMRadio] good experience with shipping past 2 months

[W1EOF]

> I unpacked it
> right there in the parking lot, not that I could have made a
> claim, since it was so poorly packed. However, i was very lucky,

UPS *wants* you to believe that. I have heard from several people lately
that pushed the point and got their damages from UPS. The legal fact is that
if they accept the packaging on the input end they cannot later declare that
it was not packed properly.

Me? I just avoid UPS whenever I can and use USPS almost exclusively. YMMV

73,

Mark W1EOF

> -Original Message-
> From: John Lyles [mailto:[EMAIL PROTECTED]
> Sent: Sunday, July 30, 2006 11:58 AM
> To: amradio@mailman.qth.net
> Subject: [AMRadio] good experience with shipping past 2 months
>
>
> I just finished receiving a series of large parcels with a
> completely disassembled 500 watt AM modulator, from East Coast to
> NM. Some were sent Fedex at my request, including the modulation
> transformer, a Stancor Polypedance. There were a pair of 810
> triodes and some other transformers (fil, driver). The others
> went UPS. They were packaged extremely well, and I didn't see any
> damage to the parts, or packages. Maybe I was lucky, but I think
> there were 4 packages that came through just fine. I have shipped
> and received numerous things via UPS and Fedex out here over the
> years, and the only things that really got hammered were poorly
> packaged as well. So I think a lot of the responsibility lies on
> the sender and how much they care to overbox, foam pack, bubble
> wrap, remove heavy iron and ship separate, etc.
>
> I received an hp 8751A network analyzer last year, off epay, and
> it was poorly packed. I knew it was going to be trouble, as the
> shipper wouldn't communicate by email, and was a jerk about
> responding to my pleas for extra care packaging. Probably
> that I won the thing for a little over  a grand instead of the
> typical $3 grand those things go for. The thing was only packed
> in styro peanuts, thats it - in a huge weak cardboard box. When I
> knew it was at the UPS warehouse, I drove there to pick it up
> after counter hours. They allow me to do that. I unpacked it
> right there in the parking lot, not that I could have made a
> claim, since it was so poorly packed. However, i was very lucky,
> as the thing had shifted to one edge of the box, but miraculously
> had not had the CRT smashed or the connectors bent on the front
> or back. There were some typical holes in the box via UPS, and
> they missed the thing. So I said a prayer, took it home, and
> plugged it in - fine.
>
> I am most wary of epay deals in which the shipper doesn't really
> know what he is selling, or the value of it to us.
>
> 73
> John
> K5PRO
>
>
> __
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> AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb
>
>

RE: [AMRadio] Receivers

[W1EOF]

Rick - I think this can only be answered depending on what you are looking
for in a receiver and what you intend on doing with it. Can we assume you
want to listen to AM only, or mostly? How important is audio
quality/fidelity to you? Are you going to listen to amateurs only or are
shortwave broadcasting too? Are you going to head directly to a particular
frequency or are you going to "cruise the airwaves"? Others may have more
considerations but those are some of mine.

73,

Mark W1EOF

> -Original Message-
> From: Rick Brashear [mailto:[EMAIL PROTECTED]
> Sent: Friday, July 28, 2006 8:50 PM
> To: AMRadio@mailman.qth.net
> Subject: [AMRadio] Receivers
>
>
> I know this may spark a geyser of opinions, but I am in need of
> assistance.  I'm shopping for a new (new to me) receiver and I'm mainly
> looking at the SP-600 and R-390.  I'm sure price will play a
> considerable role in what I get, but I want to get the most bang for my
> buck.  What's your advice?  Would you look at others?   Are these as
> good as they are cracked up to be?  Of course, I'm talking about tube
> type receivers only with AM as their primary mode.
>
> Rick/K5IZ
>
>
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> AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb
>
>

[AMRadio] The new FCC rules are here!

[W1EOF]

A bit of humor... please no flaming or arguing over this.
Life is short. Enjoy radio.

73,

Mark W1EOF

~~~
> Dateline, Washington, DC
>
> The FCC today took what they described as an important new step to
> reduce QRM on amateur frequencies by setting standards for voice
> speeds. The docket #200-4U will become official in the Part 97 amateur
> regulations effective April First.
>
> Citing frequent complaints about "long, boring conversations" on the
> ham bands, especially 75 meters, the Commission moved to impose a new
> standard on voice operations requiring all conversations to be at a
> speed of "at least 200 spoken words-per-minute".
>
> The Commission in its ruling was especially critical of what they
> called "long winded, often endless conversations by old men talking
> about their prostate problems and other needs to get up and go to the
> bathroom several times during the night".
>
> FCC staffers say they have personally heard conversations about
> nothing that went for hours and tied up frequencies that could be used
> by faster talkers.
> Official Observer stations have received instructions to listen to
> suspect conversations and count the number of words-per-minute spoken.
> Those QSOs which fail to meet the minimum speed requirements will be
> noted and the operators involved will receive Official Observer
> Advisory Notices encouraging them to follow the rules or risk
> receiving notice of apparent violation citations from the FCC.
>
> Some hams in southern states complained the new regulation will impose
> a burden on them because they naturally talk more slowly than those up
> north.
> They are suggesting that frequencies be set aside for slow speed
> discussions concerning favorite countrymusic artists (particularly Don
> Williams), NASCAR, huntin' and feeshin' (particularly bass and brim).
> FCC says it may consider that in future rulemaking.
>
> In a separate press release, the American Radio Relay League said they
> are also concerned about two-meter operation where little is discussed
> except "full quieting and items to be picked up on the way home". The
> League said that sort of thing is boring and is usually spoken very
> slowly as well, far below the 200 words-per-minute minimum. The League
> suggested conversations on how to help raise more money for League
> activities would be especially welcomed and will be encouraged. Future
> issues of QST will contain special pull-out sections containing
> recommended topics for on-air discussion to brighten up QSOs.

RE: [AMRadio] fs: Delta ASM-1

[W1EOF]

I agre Brett. You use the same methodology as I do. The outer box can be
banged to death but the inner box, and the cushioned gear on the inside
stays in once piece.

73,

Mark W1EOF

> -Original Message-
> From: Brett gazdzinski [mailto:[EMAIL PROTECTED]
> Sent: Saturday, July 22, 2006 8:18 PM
> To: 'Discussion of AM Radio'
> Subject: RE: [AMRadio] fs: Delta ASM-1
>
>
> I have sold a lot of stuff and shipped it without problems lately.
>
> I pack it in a bag (anti static) then in a box padded to survive
> shipping, then put that box in another padded box, and use FedEx
> mostly.
>
> Some report the outer box being in rough shape, the inner box
> ok.
>
> Bubble wrap, foam, peanuts, it all works if there is enough of it.
>
> Brett
>
>
> > -Original Message-
> > From: [EMAIL PROTECTED]
> > [mailto:[EMAIL PROTECTED] On Behalf Of Jim Wilhite
> > Sent: Saturday, July 22, 2006 7:29 PM
> > To: Discussion of AM Radio
> > Subject: Re: [AMRadio] fs: Delta ASM-1
> >
> > Great idea Dave if someone near you can do it.  In rural
> > Oklahoma, wood
> > chips is the only thing available except bubble wrap from Wal-Mart.
> >
> > Not to make fun of rural Oklahoma, but it is a funny, strange place.
> >
> > 73  Jim
> > W5JO
> >
> >
> >
> >
> > > If you haven't noticed, then, see how most if not all
> > electronic equipment
> > > is packed -  with preformed or molded  styrofoam not bubble wrap or
> > > peanuts. Case closed!
> > >
> > >
> > > Dave, W3ST
> >
> >
> > __
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> > Home: http://mailman.qth.net/mailman/listinfo/amradio
> > Help: http://mailman.qth.net/mmfaq.html
> > Post: mailto:AMRadio@mailman.qth.net
> > AMfone Website: http://www.amfone.net
> > AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb
> >
>
> __
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> AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb
>
>

RE: [AMRadio] fs: Delta ASM-1

[W1EOF]

THe problem with that Dave is that it does not cushion the electronics the
same way a nice thick layer of bubble wrap does. I have used it on the outer
layer and it works great there. But I would not want a piece of my
electronic gear bouncing it's way from you to me with no cushioning other
than that hard sytrofoam board.

Case closed for me!

73,

Mark W1EOF


> -Original Message-
> From: david knepper [mailto:[EMAIL PROTECTED]
> Sent: Saturday, July 22, 2006 7:57 PM
> To: Discussion of AM Radio
> Subject: Re: [AMRadio] fs: Delta ASM-1
>
>
> Jim, I would highly recommend going to a lumber yard (Home Depot)
> and buy a
> sheet of styrofoam insulation board.  Cut and form around the unit to be
> shipped.
>
> Thanks
>
> Dave, W3ST
> Publisher of the Collins Journal
> Secretary to the Collins Radio Association
> www.collinsra.com - the CRA Website
> Now with PayPal
> CRA Nets: 3805 Khz every Monday at 8 PM EST
> and 14255 every Saturday at 12 Noon EST
> - Original Message -
> From: "Jim Wilhite" <[EMAIL PROTECTED]>
> To: "Discussion of AM Radio" 
> Sent: Saturday, July 22, 2006 7:28 PM
> Subject: Re: [AMRadio] fs: Delta ASM-1
>
>
> > Great idea Dave if someone near you can do it.  In rural Oklahoma, wood
> > chips is the only thing available except bubble wrap from Wal-Mart.
> >
> > Not to make fun of rural Oklahoma, but it is a funny, strange place.
> >
> > 73  Jim
> > W5JO
> >
> >
> >
> >
> >> If you haven't noticed, then, see how most if not all electronic
> >> equipment is packed -  with preformed or molded  styrofoam not bubble
> >> wrap or peanuts. Case closed!
> >>
> >>
> >> Dave, W3ST
> >
> >
> > __
> > AMRadio mailing list
> > Home: http://mailman.qth.net/mailman/listinfo/amradio
> > Help: http://mailman.qth.net/mmfaq.html
> > Post: mailto:AMRadio@mailman.qth.net
> > AMfone Website: http://www.amfone.net
> > AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb
> >
>
> __
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> Home: http://mailman.qth.net/mailman/listinfo/amradio
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> AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb
>
>

RE: [AMRadio] Re: shipping: Delta ASM-1

[W1EOF]

OK... I'll add my $.02 in:

Don't use the UPS store. Or if you do, tell them EXACTLY how you want it
packed and stand there and watch them do it. Don't trust them to follow your
orders.  Or... Pack it yourself. If you have to stand there and tell tehm
each little step, why not just do it yourself.

Pretty much any radio at all should be double-boxed. Not a bad idea to
remove the tubes, or at least stuff a few pieces of bubble-wrap in there to
keep them from popping-out. Then wrap the entire radio in bubble-wrap. Tape
securely. Then wrap in the opposite direction with bubble wrap. Total
thickness should now be at least a couple of inches. You want to make the
bubble wrap fit the box snugly, so often you want to end up with a
rectangular assy that fits in to the box. Tape this box well, but don't go
crazy. Now take a larger box that supplies a good 3-4 inches in each
dimension. Put some peanuts in there. Drop in box#1. Fille remaining voids
with peanuts. There should be 3-4 inches in EVERY dimension around the inner
box. Tape the outer box up tight.

If the radio is heavy use thickwall boxes that have 3/8" thick or so walls.
Use the packing tape that has fiberglass threads running through it. If a
box has particularly long/large walls, reinforce them with pices of carboard
cut to fit and glued in place.

You may need to get creative to find packaing materials. And your customers
may need to pay a little more for shipping if they want their item to be in
one piece when it arrives. If done correctly you can drop this package from
a height of 5-6 feet with NO damage. If the radio is heavy, say > 70 or
80lbs you need to go even heavier. Over 100lbs really needs crating. You
take the double-boxes I just described and you put that inside a playwood
box you constructed. That box needs to be build well and reinforced.

It's not that hard but you have to understand a bit about the physics of
what happens when your package gets tossed around. I've shipped some pretty
heavy items around the world and have NEVER had one damged in the slightest.
I consistently get high marks from my customers for how I package their
items. It just takea a little care and thought. I'd be glad to answer any
questions that you have on specific items.

73,

Mark W1EOF


> -Original Message-
> From: I COLLECT TRAINS [mailto:[EMAIL PROTECTED]
> Sent: Saturday, July 22, 2006 5:03 PM
> To: Discussion of AM Radio
> Subject: Re: [AMRadio] Re: shipping: Delta ASM-1
>
>
> Guess i'll be packing it myself :) probably have fedex pick it up from the
> house.

RE: [AMRadio] RCA AR-77 or RCAF GR-10 Receiver

[W1EOF]

Dave & Ed -

Looking through the year of QST 1940 I find that RCA ran full-page ads for
the AR-77 from March through December. I don't have 1941 QST and I have not
had a chance to look at 1939 yet. Here are a few of the ads which ran in
1940: http://www.hamnutz.com/w1eof/ar77/

73,

Mark W1EOF



~
> The full-page ads for it --- around 1940-41 in QST --- make for
> interesting reading. One VERY rare option for it was a HUGE bass-reflex
loudspeaker
> assembly. Most impressive.

> ~73~ Eddy VE3CUI - VE3XZ

RE: [AMRadio] Stuff for sale...update.

[W1EOF]

Brett -

FWIW you CAN sell it to another licensed ham. The buyer is responsible to
ensure that
it meets emission standards, etc. A few years ago I put a CB style amp on
eBay. I made
it clear in the auction listing that the buyer had to prove to me he was a
licensed
ham, and that he was responsible to make sure it met specs. I even suggested
that he
build a filter for the output and not over-drive it and it would be fine.

Anyway I get an email from a guy telling me I'm violating the FCC rules. I
tried to
explain to him that since I'm not a company producing amps, it's very
similar to me
selling him a heatsink, some toriods and a few transistors. It's HIS
responsibility.
That's why we're SUPPOSED to know what we are doing when we build, repair,
and operate
our radios. Anyway... To make an agonizingly long story short, after many
back and
forths with him and several past and current FCC employees it turned out I
was
correct. He sent me a final email saying I was correct but then called me
some nasty
names.

All that said I would probably agree that it's best to keep it off of eBay
since they
don't have the expertiser to determine what's legal and what is not. So they
might let
it go sailing through, or they might take it down and give you grief.

73,

Mark W1EOF


> -Original Message-
> From: Brett gazdzinski [mailto:[EMAIL PROTECTED]
> Sent: Monday, July 03, 2006 10:04 PM
> To: 'Discussion of AM Radio'
> Subject: RE: [AMRadio] Stuff for sale...update.

> > Galaxy DX99v, 15 watt am cb/10 meter mobile, does AM, ssb, fm,
> > has freq readout along with channel numbers, and other CB
> > stuff, $200.00.
>
> Cant list this on ebay, FCC does not allow it to be resold!

[AMRadio] A freq'ing mess

[W1EOF]

I'm trying to pick a date and a set of frequencies for a club to have a QSO 
party.

Do any of you know any online references for either/or frequency and date? 

I think date alone is not too hard, I'm sure there are calenders at arrl.org and
other places. I'm more concerned about picking some bad frequencies that will
already be in use at that time.

73,

Mark W1EOF

[AMRadio] Info Needed: General Transformer Corp

[W1EOF]

Got some transformers and chokes from General Transformer Corp from Chicago.
Need specs on them. I can supply list of P/N if you got a catalog.

These are nice transformers... look similar to Kenyon iron.

This company is from Chicago, not the current one from Texas.

They also produced some transmitter kits in the 1930s.

Can anyone help?

73,

Mark W1EOF

PS: While I'm at it... need info a Kyle transformer too.

RE: [AMRadio] Amphenol Coil Forms Wanted

[W1EOF]

Hi Scott - 

Below is an email from Larry Baker, WB5OFD. 

He makes reproductions of those coil forms.

73,

Mark W1EOF
~~

WB5OFD COIL FORMS


These forms are modeled after the American Phenolic Company 
(APC) Polystyrene coil form Catalog No. 24-5P which was used 
by Ameco for their AC-1 transmitter and also for the Allied Knight 
Ocean Hopper receiver.  My forms are hand made using 1/8 inch 
wall thickness Polycarbonate hollow tubing and have the 
standard five pin base pattern using  nickel plated pins. There 
are three pieces to each assembly; Base pin disc, Coil form 
body and the Collar.   Polycarbonate liquid cement is used to 
assemble the component pieces together.

Each form is approximately 1-1/4 inches in diameter and 2-1/4 
inches in height not including the height of the base pins. There 
is a 1-1/2 inch collar at the top of each form to assist in inserting 
and extracting the coil from its socket without disturbing the wire 
coil itself.  The forms are not predrilled for the entrance/exit of the 
coil winding.

Should you wish to purchase these forms please keep the 
following in mind:

 1.  Polycarbonate is easily scuffed or scratched.  (*Note: but 
no more so than the original AMECO forms)
 
 2.  There will be slight (thousandth's of an inch) variation in 
each coil.  It would takean inordinate amount of time and 
waste of material to produce a large number of theseforms 
exactly the same since they are individually HANDMADE.  

 3.  Due to sizing tolerances of the inside and outside 
diameters in the Polycarbonate tubing, as a result of the Tubing 
Manufacture's process, it is not always possible to obtain a 
snug fit of  the collar at the top of the coil form.  Because of this, a 
small air gap may exist and the cemented joint can assume a 
milky colored look to it; however, it still a strong joint.  

 4.  During final assembly I mix and match component pieces 
to minimize this effect and also take as much care as I can to 
prevent cosmetic blemishes.

If you wish to place an order please Email me at:  
[EMAIL PROTECTED]

Pricing per form is $10.00 each plus Shipping and Handling for 
orders of four forms or less.  For orders of five or more forms, 
pricing remains $10.00 each; However, I will pay the handling 
and shipping cost which will be by U.S. Postal Priority Mail.

Thank you for your consideration.

73 Larry Baker
WB5OFD

[AMRadio] 576A rectifiers

[W1EOF]

Anyone need a pair of United Electronics CUE-576A rectifiers?

If so please contact me DIRECT, NOT ON-LIST. Thanks!

73,

Mark W1EOF

[AMRadio] How the reply button works

[W1EOF]

Don - 

This seems to come up on every list I belong to (> 35) every so often. It's not 
so much a bug but a choice. It also is NOT turning a reply into a reply-to-all. 

When you click the reply button it can only go one of two ways. To the list 
(the source of the email to you), or to the poster of the message to the list. 
It can only go one way or the other. I would contends that it is in the most 
favorable position. I'd guess that most of the time when someone replies, they 
want to reply to the list and not to the individual that posted the message.

I just checked:
All lists I belong to except one default to replying to the entire list when 
you hit
the reply button. All the Yahoo lists. The LWCA.ORG list. The only one that 
does not,
the one that's different is the GlowBugs list.

73,

Mark W1EOF


> -Original Message-
> From: Merz Donald S [mailto:[EMAIL PROTECTED]
> Sent: Sunday, June 11, 2006 2:19 PM
> To: Discussion of AM Radio
> Subject: RE: [AMRadio] Sellers and Buyers on this list...READ THIS
> 
> 
> I will do this. But it must be recognized that this "feature" is 
> a bug. No other list anywhere on Earth operates by automatically 
> making every REPLY into a REPLY-TO-ALL. 

[AMRadio] BC-223: PL-150s & Cable needed

[W1EOF]

OK... I now have two different sources for a pair of good 801a triods for my
BC-223. I'm cleaning up the dynamotor (even though it's NOS the grease is
dried up) and that should be reasdy to go.

So the only thing I need is the cable from the dynamotor to the BC-223. It's
a heavy rubber cable with... I think 7 conductors in it. The connectors are
the PL-150. I can come up with a modern cable if I have to but it would be
real nice to have the correct connectors on it.

Anyone got a pair of PL-150s???

73,

Mark W1EOF

RE: [AMRadio] Good Hams

[W1EOF]

With all this talk of tubes and good will toward men...

If anyone has a pair of 801As they want to sell or trade, I need a pair
to get my BC-223 on the air. It's cleaning up nicely and very soon the
801s will be the only thing holding me up. Thanks!

73,

Mark W1EOF

RE: [AMRadio] Relay

[W1EOF]

Those are called stepper-relays. Each pulse energizes a solenoid which
pushes a small ratcheting lever. I've seen them on eBay but I'm not sure
when. The ones I've used would not be cabable of handling any kind of RF
power since they have small contacts. There might be some with power
contacts, I don't know.

A suitable work-around would be to use regular latching relays or latching
relays feeding large relays to switch the RF. Another possibility would be
to mechanically hook one up to an RF switch so that it rotates the switch
(n) degrees.

I'm not sure I see a huge advantage opposed to usign a rotary switch that
selects the proper relay mounted at the coil base. Or use a set of
pushbuttons that are setup in a bar such that selecting one de-selects all
the others.

A few ideas anyway.

73,

Mark W1EOF

> > There were some latching relays that were used in remote control TVs
> >a long time ago.  They were a kind of rotary thing and every
> time the relay
> >coil was energized the relay would go to the next position for a volume
> >advance.  There were generally 4 positions and the forth was POWER OFF.
> >These were low voltage DC coils which ran from a 20 Volts or less source.
> >
>
> I wouldn't mind having a functioning version of one of those, to change
> taps on my bug-catcher.
>
> Are there still any in existance, John?
>
> I wonder if Ken has any left, or did the flood(s) get all of that stuff?
>
> --
> 73 = Best Regards,
> -Geoff/W5OMR

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RE: [AMRadio] Relay

[W1EOF]

Rick -

That's a latching relay. It's bi-stable with no power applied. Basically it
is magnetically balanced such that when you apply power you "flip" the relay
to the other state. Magnetics then hold it in that state. It may be a touch
one to find. So you have two choices:

1. Use a non-latching relay. I dont know what the ramifications are here. I
assume they wanted the relay to "remember" it's state with power off for a
reason. So you would need to determine how well a non-latcher
would work for you.

2. Use another latching relay. Definitely won't plug-in to the same spot. If
it's tight and/or unsightly to replace you might be able to install a
regular P&B relay in that socket and drive that relay with a latcher
that is installed in a hidden location.

73,

Mark W1EOF


> -Original Message-
> From: Rick Brashear [mailto:[EMAIL PROTECTED]
> Sent: Thursday, June 01, 2006 12:29 PM
> To: Discussion of AM Radio
> Subject: Re: [AMRadio] Relay
>
>
> Thanks Geoff... unfortunately, I had looked on those sites and nothing
> turned up for me either.  Actually, the info on the case of the relay
> states it is a "reversing polarity latch".  These are the two little
> relays that control which of the three crystals will be used in the
> oscillator.
>
> Rick
>
> W5OMR/Geoff wrote:
>
> >
> >
> > Try here, Rick...
> >
> > http://relays.tycoelectronics.com/pnb.asp
> >
> > Heck, for that matter, look at
> >
> http://www.google.com/search?hl=en&lr=&q=%22Potter+and+Brumfield+r
> elay%22&btnG=Search
> >
> >
> > I searched for the SL4349 in Google, but came up empty, as far as
> > relays go.
> >
> > --
> > 73 = Best Regards,
> > -Geoff/W5OMR
> >
> >
>
>
> __
> AMRadio mailing list
> Home: http://mailman.qth.net/mailman/listinfo/amradio
> Help: http://mailman.qth.net/mmfaq.html
> Post: mailto:AMRadio@mailman.qth.net
> AMfone Website: http://www.amfone.net
> AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb
>
>
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[AMRadio] (2) 801As needed

[W1EOF]

Anyone on the list have, or know of a source for a couple of 801As?
I'm getting a BC-223 on the air and got everything but those tubes.
Cash or willing to trade.

73,

Mark W1EOF
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[AMRadio] Desk Kilowatt Magic

[W1EOF]

Another great restoration by Bob, W0YVA. This time it's a Viking Desk
Kilowatt. If you want to see what can be done, check out these pictures. Bob
definitely has the "magic touch".

http://www.isquare.com/personal_pages/deskkw.htm


73,

Mark W1EOF
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RE: [AMRadio] Oscillator Filament Voltage change and frequency drift

[W1EOF]

OK, thanks Geoff. I'll wait for them to contact me direct if they want. I
may have a few more, I'd have to dig for them.

73,

Mark W1EOF

> -Original Message-
> From: W5OMR/Geoff [mailto:[EMAIL PROTECTED]
> Sent: Friday, May 12, 2006 3:57 PM
> To: Discussion of AM Radio
> Subject: Re: [AMRadio] Oscillator Filament Voltage change and
> frequency drift
>
>
> W1EOF wrote:
>
> >I've lost track of whoever was playing with this...
> >I have three 3AU6 for whoever, just pay for postage.
> >
> >73,
> >
> >Mark W1EOF
> >
> >
> >
>
> That'd be Don/K4KYV and Jim/WD5JKO and possibly Brett/N2DTS
>
> --
> 73 = Best Regards,
> -Geoff/W5OMR
>
>
> __
> AMRadio mailing list
> Home: http://mailman.qth.net/mailman/listinfo/amradio
> Help: http://mailman.qth.net/mmfaq.html
> Post: mailto:AMRadio@mailman.qth.net
> AMfone Website: http://www.amfone.net
> AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb
>
>
> --
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RE: [AMRadio] Oscillator Filament Voltage change and frequency drift

[W1EOF]

I've lost track of whoever was playing with this... 
I have three 3AU6 for whoever, just pay for postage.

73,

Mark W1EOF

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RE: [AMRadio] Oscillator Filament Voltage change and frequency drift

[W1EOF]

> Do they make a 4au6 or a 3au6?
>
> Jim

I'd have to look but I'd swear I have one. That's by number, you can't
always assume a 3AU6 is like a 6AU6 with a different filament. If someone is
interested, email me direct and I'll look for them.

73,

Mark W1EOF

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RE: [AMRadio] remote coax switch

[W1EOF]

I would guess (only a guess) that each one of those pins is a separate relay
coil, powered against the shell/ground. Using an ohmmeter measure from each
of those pins to ground, they should be approx. the same resistance. Apply
power from a variable supply between a pin a ground. Bring the supply up
slowly and check the connection between the common and the outputs at each
step. I think you'll find that at about 20 volts or so the connection will
be made.

73,

Mark W1EOF

> -Original Message-
> From: W5OMR/Geoff [mailto:[EMAIL PROTECTED]
> Sent: Wednesday, May 10, 2006 9:37 AM
> To: discussion of AM Radio
> Subject: [AMRadio] remote coax switch
>
>
> I've got a commercially made three position remote coax switch, that I'd
> like to get more information on, if someone has it.
>
> Made by Amphenol
> Model number 3BNI20R10A-7 (don't know if that I is a 1 or not)
> Serial: 6419
> 28 Volts DC
>
> Has 5 connections on it
> 3 BNC (outputs)
> 1 Type N Female
> 1 bluk-head with 3 pins.
>
> Does this mean that if you pulse 28v on one pin, it goes to the right,
> and if you pulse the other 28v pin, it turns to the left, with the last
> pin at ground potential?
>
> Pins are marked A B C
>
> other indentifiers are stamped on the unit...
>
> 300-81128
> IRM5895-717-2565-FX3X
>
> those are stamped on, so may be a local part number, wherever it
> came from.
>
> Any help?  Google wasn't.
>
> --
> 73 = Best Regards,
> -Geoff/W5OMR
>
> __
> AMRadio mailing list
> Home: http://mailman.qth.net/mailman/listinfo/amradio
> Help: http://mailman.qth.net/mmfaq.html
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> AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb
>
>
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[AMRadio] Ranger/National wanted

[W1EOF]

Hey -

Anyone around New England or NY have a Johnson Ranger or Ranger II they want
to get rid of? How about a National 300 or 303? I'm in RI but I can travel
for radio.

73,

Mark W1EOF
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RE: [AMRadio] antenna tuners

[W1EOF]

Don & All,

I'm about to dig a trench in my yard to run some coax and control cables to
the back, in the bushes, our of harms (XYL eyesight) way. I'm curious...

1. Did you direct-bry the coax? I've had people tell me to go ahead and bury
it. They say that by the time the coax deteriorates I should have replaced
it anyway. On the other hand, you can buy poly hose pretty cheap. That would
keep the lines dry and protect them from an errant shovel or two.

2. How bad is it to run various lines together in a tube. Would I be better
off to run them at least a few inches part to minimize inductive pickup?

3. Of course it would need to be separate but: Has anyone run ladderline
underground? Theoretically it's possible but my intuition says "Don't do
it!"

73,

Mark W1EOF


> -Original Message-
> From: Donald Chester [mailto:[EMAIL PROTECTED]
> Sent: Thursday, April 20, 2006 12:58 PM
> To: amradio@mailman.qth.net
> Subject: RE: [AMRadio] antenna tuners
>
>
>
>
> >SWR is not all that bad either as long as the transmitter sees a match,
> >especially the solid state rigs...And no, high swr
> >on a feed line will not cause it to radiate.
> >What causes feed line radiation is an unbalance between the two wires in
> >the
> >feed line.
>
> >High SWR on coax line will cause a little more loss in the feed
> line due to
> >the higher currents involved across the lower impedance of the
> coax. That
> >is
> >why when using open wire line that is 400 to 600 ohms, there is much less
> >loss. The same power across a higher impedance means less
> current and less
> >current going through the feed line wire means less power loss.
>
> Another factor causing loss with a high SWR is dielectric losses at the
> recurring high rf voltage points along the line.  At low
> impedances, it is
> the resistive loss in the wire, and at high impedances, it is dielectric
> losses that combine to cause signal loss.  But SWR is much, much less
> critical than most hams have been led to believe.
>
> >
> >An antenna tuner just matches the impedance seen at the
> transmitter end of
> >the feed line to the 50 ohm transmitter output. If there is high
> swr on the
> >feed line, any power reflected from the antenna is not wasted it is just
> >re-reflected back to the antenna and eventually gets radiated.
> >
> >At HF even fairly high swr on coax lines does not cause excessive loss.
>
> My 160m. vertical uses a 140' run of buried RG-213 from the shack to the
> antenna tuner at the base of the tower.  I  set the L-network to
> match the
> tower 1:1 SWR at 1900 kc and locked it down.  The SWR is about
> 2.5:1 at 1800
> kc and the same at 2000 kc.  I have measured the rf power input
> to the tower
> using a General Radio antenna impedance bridge and thermocouple
> rf ammeter,
> and at the same DC input power to the final amplifier, I could not detect
> any significant difference in rf power at the antenna end of the
> feedline,
> across the entire band.  Of course at each point I had to re-measure the
> base impedance of the tower, note the rf ammeter readings, and
> re-calculate
> per ohm's law, so I do not guarantee precision measurements, but the
> ballpark power was consistent across the band, with no evidence
> of excessive
> loss at the top and bottom edges
>
> Don k4kyv.
>
>
> __
> AMRadio mailing list
> Home: http://mailman.qth.net/mailman/listinfo/amradio
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> AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb
>
>
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[AMRadio] Time machines for your parlor

[W1EOF]

I was recently given a bound set of QSTs from 1931 to 1942. Boy oh boy, in
addition to the various email lists I now have another distraction keeping
me from DOING stuff. How wonderful it is to be able to sit down in an easy
chair and page through ham history. Not just the articles either. I check
out the section news from Rhode Island looking for mentions of my Dad or his
buddies from the 1930s! It's very cool to see what issues were significant
to a ham back then... and what wasn't.

During a move about ten years ago I stupidly dumped most of the magazines I
had been collecting. None were this old, but I had QST pretty much
consistently from 1971 onward. (Also had about 12 years of BYTE, now worth
big bucks). I was thinking that I would get the CD-ROMS and be happy with
those. I was very tired at the time doing a lot of moving as I combined two
families. I also dumped a bunch of transformer iron too.  I started
regreting it about a year later and have ever since. I understand that for
some, downsizing is a necessity that cannot be avoided. But in my case it
was voluntary.

Anyway... if you have not done so in awhile, take a few minutes to peruse
some really old magazines or books. Get a nice cup of your favorite
beverage, a comfy chair, and some quiet time. Someone on a list was looking
for a time machine... This is the closest thing we got.

73,

Mark

PS: I'm not anti-CDs either. Searching for info and finding it is MUCH much
easier, faster, and more complete using the CDs. But they lack the feel,
smell, and soul of an old magazine. YMMV
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RE: [AMRadio] HR-10 problem

[W1EOF]

My HR-10B doesn't do it Alan, so it's not inherent in the design. As Brett
suggested, look for voltages that are out of spec.

73,

Mark W1EOF

> -Original Message-
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
> Sent: Monday, April 10, 2006 9:49 AM
> To: AMRadio@mailman.qth.net
> Subject: [AMRadio] HR-10 problem
>
>
> Hi,
>
> I am running an HR-10 RX in my shack outside and am wondering how
> to cure an
> annoying fault. Or, this may be bad design, but I don't remember
> this from when
> I was a kid.
>
> When i turn up the RF Gain, and end up close to full on it, I get
> a shift down
> in frequency of the CW note. So far that I have to retune the BFO
> to get it
> back.
>
> The RF Gain is in series with the Cathode of the first RF stage of the RX.
>
> perhaps a Zener diode to cure it?
>
> And if so, I guess I should measure the voltage someplace and
> clamp with a
> zener, but then again, I would be modifying the whole circut.
>
> Anyone know how to fix this?
>
> Best 73,
>
> Alan
> __
> AMRadio mailing list
> Home: http://mailman.qth.net/mailman/listinfo/amradio
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[AMRadio] AM filter for an SB-300

[W1EOF]

Hi All -

Probably a long-shot, but I gotta ask: Do any of you have experience either
making a AM bandwidth filter, or modifying a SSB filter for a SB-300 or
similar receiver? I have one article on modifying a SSB filter by installing
four new crystals. Given the expense of buying four crystals I've been
re-thinking it. It seems that since I'm looking for a broad response that I
might be able to build a simplified version? Or other idea?

The AM filters are starting to look less expensive than they did previously.
:-)

73,


Mark W1EOF
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RE: [AMRadio] : BC 610 needing POWER 220VAC

[W1EOF]

I believe it's a little more complicated:

1. If you want to use two circuits, one from each side/phase then you you
should use a double breaker so that if one side blows the other one does
too.

2. I would fuse each side of the circuit at the radio. (Add a secondary fuse
for the plate supply primary).

3. I would provide some protective circuitry (relays) such that if you lose
the low-level circuits it kills the plate supply as well. Bad for the radio
and potentially dangerous if what appears to be a dark/dead radio in fact
has live B+.

That's my $.02

73,

Mark W1EOF


> -Original Message-
> From: Rbethman [mailto:[EMAIL PROTECTED]
> Sent: Saturday, April 08, 2006 12:13 PM
> To: Discussion of AM Radio
> Subject: Re: [AMRadio] : BC 610 needing POWER 220VAC
>
>
> All,
>
> There is ONE overriding issue to think about carefully here!
>
> The SINGLE 110VAC feed to the BC-610, ALSO goes through a SINGLE front
> panel fuse!
>
> IF someone desires to use TWO disparate 110VAC feeds, FUSE THE SECOND
> ONE ALSO!
>
> Bob - N0DGN
>
> John Coleman ARS WA5BXO wrote:
>
> > I really have no idea if it is wired for 110 or 220.  I know
> >that the Plate XFMR is 110VAC and if it were me I would wire a separate
> >primary circuit for the plate XFMR.  Just for the load balance.  If the
> >filaments and low voltage stuff is all run from side A of a 220 circuit
> >and the plate XFMR from side B then it is feasible that the filaments
> >and low voltage supplies would be more stable.  And the pilot lamps
> >would not dim as much.  That is important when you're trying to write in
> >the log while talking on the air by the light of pilot lamps only, HIHI.
> >
> >John, WA5BXO
> >
> >
>Bob Bethman - NØDGN
> +--+
> | NØDGN AMRadio Manassas, VA|REAL Tube Radio and AM|
> +---+--+
> |   Manassas Radio - Home of Homemade Kielbasa & Pirogi|
> +---+--+
> | Bob Bethman\\\|/// " The absence of a danger |
> | rbethman(at)comcast.net   \\ ~ ~ //  signal does *NOT* mean  |
> |   (/ @ @ /)  that everything is OK " |
> +-oOOo-(_)-oOOo+
> |   <http://home.comcast.net/~rbethman>|
> | 1 BC-61ØI w/BC-614I,1 T-213/GRC-26 w/BC614I 1 '51 Collins R-390A |
> |  SP-600/NR Type 159, Heath DX-60, Apache, Mohawk, SX-101, HT-32A |
> +-.oooO---Oooo.+
> | () ()|
> |  \  (   )  / |
> |   \ _) ( _/  |
> +--+
> | Amateur Astronomer - Celestron Nexstar 8 - Megrez 80mm SD II |
> | 12" f5 Dob coming soon!  Being built |
> |   38 Deg 46'48.62"' N - 77 Deg 28'26.89" W   |
> +--+
> |   Opinions expressed are that of my own and do not necessarily   |
> | coincide with or represent those of ANYONE else  |
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>
>
>
>
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RE: [AMRadio] 10 Meter AM Frequencies

[W1EOF]

> -Original Message-
> From: Donald Chester [mailto:[EMAIL PROTECTED]
> Sent: Wednesday, April 05, 2006 4:51 PM
> To: amradio@mailman.qth.net
> Subject: Re: [AMRadio] 10 Meter AM Frequencies

> The 7 watts on AM wouldn't be bad when 10m is open.  But the thing has
> terrible audio.  I looked at the schematic and couldn't figure out how to
> modify the audio so it wouldn't be so tin-can sounding.  Has anyone else
> figured out how to do this?
>
> Of course you could always run a "leenyar" to boost the power.
>
> Don k4kyv

Don -

I have heard that the microphone is a big part of the problem. I'm going to
mess around with mine to see if I can improve the audio. Then again, I never
had a problem because I used it on CW/SSB. But it might be worth a try since
it's external to the radio which makes it easy to do/un-do.

73,

Mark W1EOF
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RE: [AMRadio] 10 Meter AM Frequencies

[W1EOF]

Boy that's the truth. A few years back I had my HTX-100 in the car. With
that 25W I worked the world. Doesn't take much power at all.

73,

Mark W1EOF

> -Original Message-
> From: ronnie.hull [mailto:[EMAIL PROTECTED]
> Sent: Tuesday, April 04, 2006 2:30 PM
> To: Discussion of AM Radio
> Subject: Re: [AMRadio] 10 Meter AM Frequencies

> 4 years ago when propogation was still decent, I worked 13 european
> countries on ten am with a barefoot ranger.
>
> you just don't need a great deal of power to make good contacts
> on ten meters
>
> Ronnie - W5SUM
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RE: [AMRadio] k1man fined

[W1EOF]

I don't disagree with you Vince. Or with all that has been said about K1MAN
on this list. I think we all miss the bigger issue: K1MAN *WANTS* to get
caught. He wants to be the center of attention and like many children he
will do whatever he feels is necessary to get that attention. He was going
to push issues until the FCC responded.

I can, and do respect amateurs who disagree with me on issues related to
radio, etc. I have no respect for K1MAN. His childish and selfish
activitites makes us all look bad and should be shutdown permanently ASAP.

73,

Mark W1EOF



> -Original Message-
> From: vince werber [mailto:[EMAIL PROTECTED]
> Sent: Tuesday, April 04, 2006 11:55 AM
> To: Discussion of AM Radio
> Subject: Re: [AMRadio] k1man fined
>
>
> Let's face the facts about this K1MAN issue... 
>
> In this case K1MAN earned the fine...
>
> 73
> Vince
> ka1iic
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RE: [AMRadio] 10 Meter AM Frequencies

[W1EOF]

In addition if you're interested in knowing if the band is open, don't
forget to
tune through the beacon portion of the band approx 28200 - 28300.

73,

Mark W1EOF

> -Original Message-
> From: Rev. Don Sanders [mailto:[EMAIL PROTECTED]
> Sent: Tuesday, April 04, 2006 10:46 AM
> To: Discussion of AM Radio
> Subject: Re: [AMRadio] 10 Meter AM Frequencies

> Much of the QRp activity on 10 was on 29.060 in years past. I
> often monitor
> 29.060 but don't hear much Others monitor 29.00.
>
> Healthfully yours,
  DON W4BWS

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RE: [AMRadio] FS: Radio Books List Four--Great Tube Books

[W1EOF]

Sorry to all. Me bad. 73, Mark W1EOF

> -Original Message-
> From: W1EOF [mailto:[EMAIL PROTECTED]
> Sent: Thursday, March 30, 2006 9:58 AM
> To: Discussion of AM Radio
> Subject: RE: [AMRadio] FS: Radio Books List Four--Great Tube Books
> 
> 
> Don,
> 
> I'd like:
> 
> RCA HB-3 Transmitting Tube Section. This has been
> carefully added to up through about 1965. Nice. $20


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RE: [AMRadio] FS: Radio Books List Four--Great Tube Books

[W1EOF]

Don,

I'd like:

RCA HB-3 Transmitting Tube Section. This has been
carefully added to up through about 1965. Nice. $20

Add it to my pile. We'll "square-up" this weekend.

73,

Mark W1EOF

> -Original Message-
> From: Merz Donald S [mailto:[EMAIL PROTECTED]
> Sent: Thursday, March 30, 2006 9:38 AM
> To: 'Amradio (E-mail); 'Baswaplist' (E-mail); 'Glowbugs (E-mail)
> Subject: [AMRadio] FS: Radio Books List Four--Great Tube Books
> 
> 
> For Sale: Radio Books List Four. All prices plus $2
> media mailing. Shipping cost combined for multiple
> books.
> 
> RCA HB-3 Transmitting Tube Section. This has been
> carefully added to up through about 1965. Nice. $20
> 
> RCA HB-3 Receiving & Industrial Tube Section. Not
> updated past about 1959. $12
> 
> Electronic Circuits and Tubes, by The Electronics
> Training Staff of the Cruft Laboratory of Harvard
> University, 1947. Massive and detailed work-almost
> 1000 pages in a single hardback volume-covering topics
> such as Measurement of Circuit Elements, Networks and
> Impedance Matching, Transients and Coupled Ciruits--
> along with much, much more. The analysis is both 
> graphical and mathematical with a very well-written 
> text. The most impressive volume on tubes I have 
> ever seen, bar none. $60
> 
> VHF Handbook For Radio Amateurs, Bill Orr, W6SAI,
> Radio Publications, 1974. Paperback, excellent. $5
> 
> Richard Johnson, How to Use Signal and Sweep
> Generators, Rider, 1953, excellent. $7
> 
> Joseph  Carr, The Complete Handbook of Amplifiers,
> Oscillators and Multivibrators, Tab Hardback, 1st ed.,
> 1981.  $10
> 
> Paul C. Smith, Know Your Oscilloscope, Sams paperback,
> 1963, excellent. $5
> 
> Mannie Horowitz, Troubleshooting Electronic Test
> Equipment, Tab books, 1986. Comprehensive 440
> pages-all solid state. $12
> 
> Marcus and Horton, Elements of Radio, Volume I only,
> 1943. Prentice-Hall hardback. Companion Theory book
> for Elements of Radio Servicing by Marcus and Levy.
> 300+ pages. $8
> 
> Quartz Crystals For Electrical Circuits,  Raymond A.
> Heising (Bell Labs), D. Van Nostrand, 1946. 550 pages.
> Hardback. Fabulously thorough. Deep math and theory
> all the way to detailed photos of the manufacturing
> process and detailed discussions of variances in
> manufacturing. Just plain awesome. $45
> 
> Fredrick Collins, The Radio Amateur's Handbook, 10th
> ed., 1957. 350 pages. Lots of photos and partial
> schematics for Heathkit gear. Ex-library with
> plastic-coated dust jacket. Excellent. $12
> 
> Hertzberg & Collins, The Radio Amateur's Handbook,
> 15th ed., 1983. 375 pages. Material somewhat dated by
> the time of this edition. $10
> 
> Keith Henney and James D. Fahnestock, Electron Tubes
> in Industry, McGraw-Hill hardback, 3rd ed., 1952. 330+
> pages. Great stuff. $18 each 2 copies available
> 
> Herbert J. Reich, Theory and Application of Electron
> Tubes, 2nd ed., 1944, McGraw-Hill. 700+ pages.
> Excellent discussion of power supplies and other VT
> applications. $28 each. 2 available.
> 
> Samuel Seely, Electron Tube Circuits, 1st ed., 1950,
> McGraw-Hill hardback. 520+ pages, superbly
> comprehensive. Detailed coverage f amplifiers,
> oscillators, AM, FM, and much more. $35
> 
> Thanks for looking.
> 73, Don Merz, N3RHT
>  
> The information contained in this e-mail may be confidential and 
> is intended solely for the use of the named addressee.
> Access, copying or re-use of the e-mail or any information 
> contained therein by any other person is not authorized.
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RE: [AMRadio] Modulator design needed

[W1EOF]

I am planning on using a pair of 807s and that was what the xfmr was picked
for. Both the power supply and modulator will be built with tubes, no solid
state in this project. Not that I have anything against solid state... some
of my best friends use solid state components. :-)

So I should just look at some of the tube audio sites and find a suitable
phase inverter circuit? I don't mind.. I was being lazy and hoping to just
find a proven design/schematic that I could copy.

I have some time too as I'm going to build the power supply first and get
the 6N2 restored and running on CW. Then I'll tackle the modulator.

73,

Mark W1EOF

> -Original Message-
> From: Mike Dorworth, K4XM [mailto:[EMAIL PROTECTED]
> Sent: Sunday, March 26, 2006 2:37 PM
> To: Discussion of AM Radio
> Subject: Re: [AMRadio] Modulator design needed
>
>
>
> 807 in class AB1 at 400 volts 36 watts, 500 volts 46 watts, 600 volts 56
> watts and 750 volts 72 watts.
> Usually subtract 10 to 15 percent for transformer losses etc.
>  Almost a perfect match for the 6N2 at any voltage used.. Mike

[AMRadio] Modulator design needed

[W1EOF]

I've been gifted a nice mod transformer so I can build a modulator for my
Johnson 6N2. I don't have a driver transformer so I'm looking for a design
which doesn't need one. I'm sure the schematics are out there, but I keep
finding ones with the driver transformer. Same with all my old radio books
that I've looked at so far. Can someone point me in the direction of a good
design that is online, or one that you can share with me via email? Thanks!

In case anyone is  wondering: I don't want to mod my Johnson Viking to drive
the 6N2 so I'm building a separate power supply and modulator for it. The
power supply will server several radios (I also have a Johnson Viking Mobile
I'd like to fire-up) and I may want to use the modulator on a different rig
sometime. Considering that this is for a 6M/2M AM rig, all the more reason
to go this way. So that's why I'm going this route of "separates."


73,

Mark W1EOF
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[AMRadio] Needed: Knob for R-388

[W1EOF]

Hi All,

I need a knob for a friends R-388.
According to him It's "one of the medium ones for the RF gain or standby
switches."

Ayone have an extra?

73,

Mark W1EOF
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RE: [AMRadio] Relay 101 Reed Relays (white papers)

[W1EOF]

Below are links to some white papers that explain reed relays much better
than I can. Enjoy.

73,

Mark W1EOF

~~~
How a reed switch operates:
http://www.cotorelay.com/Reed_Switch_Operation_Methods.pdf

Glossary of reed switch terms:
http://www.cotorelay.com/Glossary.pdf

Switching considerations of contacts:
http://www.cotorelay.com/Switching_Considerations.pdf

RF Characteristics of reed relays:
http://www.cotorelay.com/RF_Parameter_Measurement.pdf

Contact Resistance and Dynamics:
http://www.cotorelay.com/Contact_Resistance___Dynamics.pdf

Magnetic Interaction:
http://www.cotorelay.com/Magnetic_Interaction.pdf
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RE: [AMRadio] Relay 101 Reed Relays

[W1EOF]

Well like machanical relays it's very much about the contact materials. In
the relay business we spend a lot of time working on contact materials,
plating, etc. So it's hard to illuminate too much without knowing the
particular device in question.

What's a reed-relay? A relay made from a reed-switch inside a coil. A reed
switch has two ferrous blades which have had a contact material deposited on
the ends making up the contact. When the coil is energized the steel blades
of the reed switch deflect a very small amount and close the contacts.
That's it.

A few thoughts:

1. Reed relays tend to be fast. Regular reeds close in less than a
millisecond, mercury reeds about 2ms.

2. If you don't know what the coil spec is, hookup the coil across a
variable power supply. Adjust the meter upward slowly until the contacts
close (determined by a DMM across them). Bring the coil voltage to 0.00 and
repeat a few times. This is call the Operate voltage. Normal operate voltage
for a reed relay is 50% overdive. So your typical 5.0vdc relay will operate
about 3.6 volts or so. Most relays are find at 100% overdrive, it doesn't
hurt the relay.

3. Contact life is all about the materials. When designing a generic
multi-purpose reed relay they choose a reed switch which can handle moderate
voltages and loads. In very broad general terms if you were interested in
very very low contact resistance you use a soft contact surface like gold.
This is terrible for higher voltages or currents though. For those you want
something really hard.

4. If you have a mercury or a mercury-wetted relay make sure it's oriented
properly. These relays have a blob (or at least some small balls) of mercury
in them. You don't want that mercury floating around and shorting the
contacts when the relay is supposed to be off. They will sometimes have an
arrow on them but not always.

5. Form-B reed relays rely on a magnet to hold the switch closed. When you
apply voltage to the coil the magnetic force overcomes the magnet and opens
the switch.

6. Form-C reed relays are made with a form-c switch. The blade is held
against the N.C. contact via mechanical force. Applying coil voltage results
in magnetic force that moves the blade from the N.C. contact to the N.O.
contact. It relys on mechanical force to return the switch to the resting
state.

7. Reed relays can have two types of shields in them. One is a magnetic
shield on the outside of the coil. This helps prevent interaction when the
relays are mounted very close to one another on a PC board. The other is a
RF shield inside the bore of the coil. This is to provide a constant
impedance to the circuit. This is very, very important to many reed relay
customers. For instance automatic test equipment (ATE) manufacturers are big
consumers of reed relays. A modern semiconductor tester can use 10,000
relays. They want to test fast device quickly. So they are very very
concerned with the RF performance of the device.

Many years ago I started working for a reed relay company. I was naive,
thinking "How complicated can these things be?' Ha! Now I'm older and wiser
and understand that there is a wealth of knowledge and complexity in many
things we deam "simple". Reed relays incorporate electronics, physics,
magnetics into their design and use. TO design and test them you work with
voltages from microvolts to thousands of volts. .001 ohm to 10^12 ohms
(million-megohms). I'm still learning today after twenty years. Relay
manufacturers are constantly pushing the envelope to make devices which not
only perform better but are much smaller and less expensive. I have recently
seen reed relays that are approximately the same size as a 1/2W resistor!

I don't know what else to say in general about them. I'll be glad to answer
any questions on this subject. I hope this gives you some food for thought.

73,

Mark W1EOF

> -Original Message-
> From: Mark Foltarz [mailto:[EMAIL PROTECTED]
> Sent: Thursday, March 23, 2006 12:24 PM
> To: amradio@mailman.qth.net
> Subject: RE: [AMRadio] Relay 101 Reed Relays
>
>
> Mark,
>
>   Would you elaborate on some of the subtleties of the reed relay
> characteristics?
>
>  They are so prevalent now in many tuners and even my Philips RF
> gen that it
> would be interesting to learn something about them besides the basic
> functionality.
>
> TNX
> de KA4JVY
> Mark
>
> --- W1EOF <[EMAIL PROTECTED]> wrote:
>
> >
> > Although simplistic, those papers are well written. My only
> caveat is that
> > they are written for electromechanical relays. Reed relays (my
> area) have
> > some characteristics taht are very similar and some that are quite
> > different. Nice find Jim.
> >
> > 73,
> >
> > Mark W1EOF
> >
> > > -Original Message-
> > > Fro

RE: [AMRadio] Relay 101

[W1EOF]

Although simplistic, those papers are well written. My only caveat is that
they are written for electromechanical relays. Reed relays (my area) have
some characteristics taht are very similar and some that are quite
different. Nice find Jim.

73,

Mark W1EOF

> -Original Message-
> From: Jim Candela [mailto:[EMAIL PROTECTED]
> Sent: Wednesday, March 22, 2006 12:13 PM
> To: Discussion of AM Radio
> Subject: [AMRadio] Relay 101
>
>
>
> Hi All,
>
>The Tyco folks have some interesting application
> notes about relays that fit into an earlier thread on
> this reflector. Check out the following links:
>
> Relay Coil Back EMF protection:
> http://relays.tycoelectronics.com/app_pdfs/13c3311.pdf
>
> Relay Contact Arc suppression:
> http://relays.tycoelectronics.com/app_pdfs/13c3236.pdf
>
> Other Relay and general switching topics:
> http://relays.tycoelectronics.com/application.asp
>
> We can use some of these ideas on our AM rigs
>
>
> Jim
> WD5JKO
> __
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RE: [AMRadio] Bull Horn

[W1EOF]

Hi David,

Try www.freecycle.org which is a community-based organization to help people
recyle their goods. You sign up for a list that is geographically near you
and then post a "NEED:" email just like this one. If someone has one that is
surplus to their needs, they email you.

The rule is no $$$ can exchange hands. It's an excellent way to help someone
else and also clean out the stuff from your garage you no longer need. We
gotten rid of some furniture, linens, clothes, kitchen stuff. Felt good to
give it to someone who could use it.

Every few months I post an email saying that I restore old radios and TVs. A
few months back I was given a SB-300/SB-401 combo. You never know... someone
may have a Globe King or Collins that they want out of their attic.

73,

Mark W1EOF


> -Original Message-
> From: david knepper [mailto:[EMAIL PROTECTED]
> Sent: Monday, March 20, 2006 8:09 AM
> Subject: [AMRadio] Bull Horn
>
> Would anyone have a megaphone to donate to an elementary track
> team that has
> been formed by a few volunteers in our community.

> Dave, W3ST

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RE: [AMRadio] Rubber Feet

[W1EOF]

The only caveat I've heard abotu McMasterCarr is that you must be VERY
specific that you want everything shipped in one package. One guy I know had
a tiny order come in three shipments over a period of two weeks. The
shipping cost exceeded the parts cost.

73,

Mark W1EOF

> -Original Message-
> From: John Lawson [mailto:[EMAIL PROTECTED]
> Sent: Sunday, March 19, 2006 6:25 PM
> To: Discussion of AM Radio
> Subject: Re: [AMRadio] Rubber Feet
>
>
>
>
> On Sun, 19 Mar 2006, Darrell, WA5VGO wrote:
>
> > What company has a good selection of rubber feet with screw
> mounting? All of
> > the usual suppliers seem to have a very limited selection of
> mostly tiny self
> > adhesive ones.
>
>
>   Try McMaster-Carr - www.mcmaster.com - page 3527 "recessed bumpers"
> probably what you are looking for, plus Macmaster Carr's web interface is
> the finest, most comprehensive, easy to use site that I have ever found
> yet, and I buy stuff from the web all day.  Once you've registered a
> credit card you can have items sent to you in the time in takes
> to find it
> and press the 'order' button.
>
>And they'll happily send you one 1/4-20 3/4" bolt, or a warehouse full
> of shelving - an ounce of glue, or railroad tank cars of cleaner - all
> with the same efficiency.
>
>
>Okay - McMaster-Carr commercial over now...
>
> Cheers
>
> John  KB6SCO
>
> __
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RE: [AMRadio] Voltage regulator

[W1EOF]

One diode will do it if it's not very far from the relay coils. Diodes are
cheap but you don't one on every single coil if they are all in parallel.

The whole purpose of the diode is to protect whatever is driving the coil
from the back-emf pulse. In the case of a solid state device that back-emf
can kill it instantly. A small 5VDC coil can generate a LOT of voltage when
it's field collapses.

As as the Amphenol relays go If they are DC coils they should have the
reverse diode on them for good measure. Of course if they are AC coils (Some
are) then you definitely should NOT use a diode.

73,

Mark W1EOF

> -Original Message-
> From: Barrie Smith [mailto:[EMAIL PROTECTED]
> Sent: Sunday, March 19, 2006 4:20 PM
> To: Discussion of AM Radio
> Subject: Re: [AMRadio] Voltage regulator
>
>
> Another couple of questions relative to relays this time.
>
> Some of my antenna relays have protective diodes and some don't.
> If a power
> supply were to be used only for switching relays, could the
> protective diode
> be placed at the output of the power supply, rather than at the relay?
>
> Also, looking at a couple of Amphenol coax relays I have here,
> there is not
> only a protective diode, but a (very) small disc ceramic capacitor across
> the coil.
>
> Further protection?
>
> 73, Barrie, W7ALW
>
>
> __
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>
>
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RE: [AMRadio] Class AB and B audio XFMRS

[W1EOF]

Good points about the complex relationship of the components making up a
transformer. I especially liked the reminder about the bia used on recording
heads... I had completely forgot about that.

73,

Mark W1EOF

> BTW audio analog tape recorders minimized this problem with the head
> by using a high frequency bias, say 22 kcs, to keep the flux
> constantly changing and allowing good LF response while making the
> recording.  The HF signal is filtered out on playback either by the
> playback head or immediately before the first preamp.
>
> Larry W3LW
>
> Some folks on here surely can amplify this and correct my fuzzy
> memory if needed.
>
>
> The problem is the energy transfer medium - THE IRON.
>
>
>
> At 01:02 PM 3/13/2006, John E. Coleman (ARS WA5BXO) wrote:
> > Perhaps I should clarify one point that we may all be forgetting
> >here.  A XFMR will only transfer energy during the movement of
> the magnetic
> >field (EXPANDING OR CONTRATING).  If the magnetic field becomes
> stationary
> >then no energy will be transferred to the secondary regardless
> of the amount
> >of iron.  But if the magnetic movement is fast enough then transfer
> >efficiency can be high.  As the frequency is lowered the
> magnetic movement
> >is slowed down then the efficiency drops off.  I'm not sure if
> this is the
> >proper term mathematically but it is as if the coefficiency of
> coupling is
> >not as good when the frequency becomes too low.
> >
> > I hope I'm not boring folks with this and some may say
> I am making a
> >mountain of a mole hill.  I just find it fascinating.  I guess
> it is just my
> >type of thing.
> >
> >John, WA5BXO
> >Original Message-
> >From: [EMAIL PROTECTED]
> >[mailto:[EMAIL PROTECTED] On Behalf Of John E.
> Coleman (ARS
> >WA5BXO)
> >Sent: Monday, March 13, 2006 11:36 AM
> >To: 'Discussion of AM Radio'
> >Subject: RE: [AMRadio] Class AB and B audio XFMRS
> >
> >The Band pass and energy Xfer of a transformer with no load is
> one thing but
> >it all changes depending on the load and the DC involved.  In class A
> >balanced PP circuits the XFMR will still saturate at some
> frequency and load
> >even if it is perfect balance on the PP circuit.  XFMR
> saturation distortion
> >in class A single ended service has a trapezoidal shape if the quiescent
> >current is too high but in PP class A the shape is weird because the XFMR
> >remains balance as for as DC is concerned but yet the XFMR will
> not produce
> >the sign wave on the output if the frequency is too low.  It
> resembles cross
> >over distortion even though there is no cross over in class A push-pull.
> >
> >
> >
> >
> >__
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> >Home: http://mailman.qth.net/mailman/listinfo/amradio
> >Help: http://mailman.qth.net/mmfaq.html
> >Post: mailto:AMRadio@mailman.qth.net
> >AMfone Website: http://www.amfone.net
> >AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb
>
> __
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>
>
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RE: [AMRadio] 51J3 or 75A3?

[W1EOF]

Great point!

WIth minimal invasivness you can add an external amp that will make many
receivers sound much better. Maybe a more important consideration is what
you want to do with the receiver. A case in point: An R-390 is a *great*
receiver. But due to it's tuning/bandswitching design it's not a great "band
cruiser". Too much cranking that knob around. Some radios such as the early
HRO series I mentioned before sound wonderful but require a plug-in coil
rack to switch to a different band. I'd say that's not a good choice if you
intend on flipping around between 160, 80, and 20.

As people have said, there is not ideal receiver. Each one was designed for
a target user and use. If I were you, and wanted to buy a single receiver
for not so much money I'd look at the earlier Hammarlunds. Maybe a 129 as
Grant suggested. They are not that expensive at all even in very nice shape.
By all means if you have the opportunity go to some shacks and take some for
a test drive. Don't just listen, but tune around yourself. Adjust the
filters. Play with the controls. Get a "feel" for how it works.

As a frequent "over-thinker" who plans and researches too much I can tell
you to just jump-in and swim around.

Best wishes on your hunt!

73,

Mark W1EOF



> > I don't think there's an "ideal" or even "best" vintage AM receiver.


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RE: [AMRadio] 51J3 or 75A3?

[W1EOF]

I've never been able to keep the Hammarlund line sorted out in my mind. What
distinguishes the 160???

73,

Mark W1EOF

> -Original Message-
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
> Sent: Sunday, March 05, 2006 1:12 PM
> To: amradio@mailman.qth.net
> Cc: amradio@mailman.qth.net
> Subject: Re: [AMRadio] 51J3 or 75A3?
>
>
> Great Thread!
>
> Under the category of, "For what it's worth," I grew up using a
> 75A4 and about 20 years ago had my own 75A3. I will admit to
> being mesmerized by the Collins mystique and indeed they are
> outstanding receivers.
>
> Recently, I went out to re-obtain a 75A3 for my shack, along the
> way I came across a number of other receivers when all was said
> and done, I found the Hammarlund HQ-160 to be a far superior in
> an audio than the Collins Equipment. (as compared to the an
> unmodified Collins)
>
> This is not to say a Collins receiver doesn't have a future spot
> in my shack, however for the difference in price, I am very
> pleased with the HQ-160.
>
> I also picked up a HQ-170A, there is no comparison to the HQ-160
> for audio quality, however it is very comparable to the Collins
> in Stability and dial accuracy. It's a Great "Battle Mode" receiver.
>
> Bottom line,  for $100 less than what I was going to pay for a
> 75A3 that needed repair, I bought 2 outstanding and in there own
> way comparable receivers.
>
> Best Regards,
>
> Steve W1TAV
>
> __
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> AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb
>
>
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RE: [AMRadio] 51J3 or 75A3?

[W1EOF]

A friend of mine has an HRO-SR. It has mechanical not crystal filters. He
also has a bunch of Collins receivers including an 75A1, 75A2, 75A3, 75A4,
51J4, along with several R-390s and an SP-600. One night we were messing
around and listening to some guys on 160M AM with the various receivers.

When he switched to the HRO it was... weird, almost ghostly. Honest we were
not smoking anything but those guys coming through that National speaker and
filling the shack sounded like signals from the past. REALLY
long-delayed-echoes. I'm no audiophool but the sound was DISTINCTLY better
and had another "dimension" to it.

Ever since that night I moved the HRO-SR way up on my "Want one before I
die" list.

I remember him saying that any Collins receiver with crystal filtering
really distorted the audio in a noticable way. YMMV.

73,

Mark W1EOF


> -Original Message-
> From: Theo Bellamy [mailto:[EMAIL PROTECTED]
> Sent: Saturday, March 04, 2006 3:05 PM
> To: Discussion of AM Radio
> Subject: [AMRadio] 51J3 or 75A3?
>
>
> I am shopping for a receiver to use on AM. I think I want either
> a 75A3 or a
> 51J3. Which one is best for AM use as far as making pleasing
> sounds come out
> of the speaker? I used to have a 51J4 and a 75A4, and they worked fine
> (especially the 'J4), but I have heard that the 'J3 may have the best
> sounding audio section for AM. True?
>
> Thanks,
> Theo K4MO
>
>
> __
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>
>
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RE: [AMRadio] Re: AM Transmitter Advice??

[W1EOF]

Hey Bob -

I really enjoyed reading the article about your 6AX5 transmitter in this
months Collector. Very cool stuff and what I like most
about it is you did for pure enjoyment. Kudos.

73,

Mark W1EOF


> -Original Message-
> From: Bob Deuel [mailto:[EMAIL PROTECTED]
> Sent: Thursday, February 16, 2006 7:05 PM
> To: 'Discussion of AM Radio'
> Subject: [AMRadio] Re: AM Transmitter Advice??
>
>
> Hello Larry and all:
>
> Larry's tongue in cheek comment employing 866's as a linear amplifier tube
> prompted me to contribute the following: Certain full-wave
> rectifiers can be
> configured to amplify or oscillate. I have built audio, Hartley
> and Simpson
> oscillators using only 6AX5GT's full-wave rectifiers as the sole active
> device. These were displayed at 2004 Mid-Atlantic Antique Radio Club Meet
> and actually won a Blue Ribbon.
> Late last year I built an AM transmitter consisting of a Hartley
> oscillator
> modulated by an AM modulator using only 6AX5GT full-wave
> rectifier tubes as
> the active devices. No solid-state magic, just simple full-wave
> rectifiers.
> The basic concept is that of the Heintz and Kaufman gridless Gammatron
> circuits. The transmitter was set up for the broadcast band and
> works fine.
> It has been publicly demonstrated a couple times now and a write up
> including the circuit was published in the February, 2006 issue
> of the "Tube
> Collector" magazine which is the bi-monthly magazine published by the Tube
> Collectors Association, Inc. It is fun to make full-wave
> rectifiers do more
> than just rectify.
>
> Bob, K2GLO
>
> -Original Message-
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] On Behalf Of ne1s
> Sent: Thursday, February 16, 2006 10:36 AM
> To: Discussion of AM Radio
> Subject: [AMRadio] Re: AM Transmitter Advice??
>
> Donald Chester writes:
>
> >
> >> Assuming one is going to build a linear, and so putting aside other
> >> issues
> >> such as linear vs plate modulation, why do you think it makes a
> >> difference
> >> what tube is used? Are you referring to running a linear at
> greater than
> >> legal limit?.
> >
> > Well, go ahead and try building a legal limit linear that runs
> a pair of
> > 807's in the final.
> >
>
> Yeah, or a pair of 866As
>
> Sorry (the devil made me do it).
>
> 73,
>  -Larry/NE1S
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>
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>
>
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RE: [AMRadio] REPLY TO addresses - WAS: restored Gonset G-76

[W1EOF]

Hey Dan -

The people that make the free FireFox browser (now > 15% of the market and
climbing!) also have an email client, a calender/scheduler, and an HTML
editor as separate programs. They are all very high quality and 100%.

73,

Mark W1EOF

> -Original Message-
> From: Dan wright [mailto:[EMAIL PROTECTED]
> Sent: Saturday, February 11, 2006 4:11 PM
> To: [EMAIL PROTECTED]; Discussion of AM Radio
> Subject: Re: [AMRadio] REPLY TO addresses - WAS: restored Gonset G-76
>
>
>
>
>
> >Dan if you got a better e-mail program like PEGASUS (it's free!)
> >you could SELECT the reply to go to whomever you wanted.
>
> Hey Bry!!
>
> Thanks for the nice note(8->
>
> I use Eudora.used it for years and yearsand if I take the
> time to LOOK
> at what I'm doin' , I can also select who the recipient is. ALTHOUGH
> I need to check out PEGASUS
>
> Right now I am struggling with dialup and the phone lines
> are having problems and are getting slower and slower.
>
> In a week or so I have an appointment to get RoadRunner
> installed and after that, I'll be downloading stuff!!!
>
> thanks again!!
>
> 73 de Dan -- WAØJRD ..
> __
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>
>
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RE: [AMRadio] REPLY TO addresses

[W1EOF]

Brian -

Outlook doesn't control who you reply to. There is a button for "Reply" and
a button for "Reply All" just like all the other popular email programs. The
problem is in the default setting for a particular email list. Usually you
have a choice which way a "reply" goes. The problem is that no matter which
way it's setup it is wrong for some percentage of the list members.

Some people compensate by always clicking "ReplyAll" which hits both the
individual and the list. This is handy for when you intentionally desire to
reply immediately and separately to the individual AND want to share the
response with the other list members (like this email).  That's the only
case one should use "ReplyAll".

It's just something that you need to get used to. No software can reolve all
the decisions, and as you imply nor should they.

73,

Mark W1EOF


> -Original Message-
> From: Brian Carling [mailto:[EMAIL PROTECTED]
> Sent: Saturday, February 11, 2006 3:24 PM
> To: Discussion of AM Radio
> Subject: [AMRadio] REPLY TO addresses - WAS: restored Gonset G-76
>
>
> Dan if you got a better e-mail program like PEGASUS (it's free!)
> you could SELECT the reply to go to whomever you wanted.
>
> The sender, the list, the CC: etc. - I would hate to go to Outlook
> or something that takes control of who you reply to!
>
> A lot of these lists force people to reply to the list AND to the
> sender so you end up getting 2 or 3 copies of the reply in
> some cases. The Glowbugs group is chronic about that!
>
> http://www.pmail.com/
>
> Worth having. I have used it for years. Has some great mail
> filtering and folder features that lets you really organize
> multiple subscribed lists/groups extremely well.
>
> YMMV - 73 de AF4K, Bry
>
> On 8 Feb 2006 at 12:49, Dan wright wrote:
>
> >
> >
> > WELL HELL!
> >
> > It was NOT my intention to send this to the list.
> > I apologize both to Craig and to the list.
> >
> > However I am not pissed or anything about the rig. There are several
> > very good reasons it may have worked when he checked it, and now it
> > doesn't.
> >
> > I kinda wish this list had a "reply to" that went
> > to the sender and not the list.
> > This ain't the first time I have been burned. It's my fault, I
> need to check
> > the address fields more carefully.so once again I apologize!!
> >
> > Dan -- WAØJRD ..
> >
> > __
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> > Home: http://mailman.qth.net/mailman/listinfo/amradio
> > Help: http://mailman.qth.net/mmfaq.html
> > Post: mailto:AMRadio@mailman.qth.net
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> > AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb
> >
>
>
> __
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>
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[AMRadio] RE: Grandpa's Radio

[W1EOF]

> And we should totally ostracize anyone within our group who
> supports the League, as the clique in Newington certainly does not have
OUR
> best interests in mind.

Nice! Hey that's what ham radio is all about: Making yourself feel better by
putting
down those that don't agree with you... no better yet GET RID of them! Lets
just have
a little "club" where all people will think like you! They will make you
king! And you
can all get together and laugh at those little people who are not in your
club.

Real nice OM. You, and people who think like you, are at the core of what is
wrong
with amatuer radio. Hope you're happy in your imaginary little club.

<73 omitted>

Mark W1EOF


> -Original Message-
> From: Phil Galasso [mailto:[EMAIL PROTECTED]
> Sent: Tuesday, February 07, 2006 8:14 AM
> To: AM Reflector
> Subject: [AMRadio] RE: Grandpa's Radio
>
>
> - Original Message - >
> > Trying to kill a proposal because you believe it's out to screw you is
> > just plain fantasy. The proposal is a future based plan for our Service.
>
> And if you believe that, I have this lovely bridge in New York City that I
> would like to sell you. Hell, I could even throw in the Pierce Street and
> Market Street bridges in downtown Wilkes-Barre for just $11,306
> extra! (The
> mayflies are available for a slight extra charge.)
>
> The League and its supporters, in clamoring for even more regulation of an
> already grossly overregulated radio service, remind me of the nerdy little
> kid who would always ask the teacher to assign more homework to the class.
> Like that kid, the League people deserve to have the living s--t
> beaten out
> of them! Rather than doing that, we should simply refuse to buy their
> publications and refuse to take out membership in that pernicious
> organization. And we should totally ostracize anyone within our group who
> supports the League, as the clique in Newington certainly does
> not have OUR
> best interests in mind.
>
> Of course, we will hear that old chestnut about "members being able to
> influence the League". If you believe that, I'm sure you also
> have faith in
> Santa Claus, the Easter Bunny, and the Tooth Fairy.
>
> There is something seriously wrong with amateur radio regulation in this
> country when even Castro's Cuba has more lenient regulations than
> we do. For
> the Cubans don't have to put up with any of that subband
> nonsense. They have
> three classes of operator license, with CL stations being
> restricted to two
> or three bands, CM stations having most privileges, but with
> reduced power,
> and CO stations having full privileges, with no emission or bandwidth
> subbands to worry about.
>
> But the Uncle Toms of our hobby/service will always insist that
> we Americans
> should always have to ride in the back of the spectrum bus...
>
> Phil Galasso
> K2PG
>
>
>
> __
> AMRadio mailing list
> Home: http://mailman.qth.net/mailman/listinfo/amradio
> Help: http://mailman.qth.net/mmfaq.html
> Post: mailto:AMRadio@mailman.qth.net
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> AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb
>
>
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RE: [AMRadio] 813 question

[W1EOF]

I asked on the Tube Collector Assc list and got this response from Lane
Upton,
who is a retired engineer from Eimac and one of the knowledgeable people
around
regarding the manufacturing of transmitting tubes:

"The leakage/breakage of metal to glass seals is primarily due to thermal or
mechanical stress. There should be no reason for tubes just lying around to
have any seal problems."
Lane Upton

73,

Mark W1EOF


> -Original Message-
> From: charles free [mailto:[EMAIL PROTECTED]
> Sent: Tuesday, January 31, 2006 10:13 AM
> To: amradio@mailman.qth.net
> Subject: [AMRadio] 813 question
>
>
> Hello all,
>
> I have a buddy who insists that if I don't get my old
> 813's out of the "future project" box and fire the
> filaments up on them now and then, the base seals will
> eventually deteriorate.  I guess he is talking about
> the adhesive that secures the base to the bulb.  I
> don't see how the glass envelope where the leads pass
> through the glass could be affected by lack of use,
> but maybe one of you folks has experience with this.
> Anybody heard of this one before?
>
> W4MEC, Charlie in NC


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RE: [AMRadio] AM Transmitter Advice??

[W1EOF]

Dennis,

I was with you until the end where you say: "Bottom line -- If you're going
to build a linear do it right and go for a pair of 4-400's, single 4-1000A,
3-1000Z or one of the big Russian tubes I've seen on eBay recently."

Assuming one is going to build a linear, and so putting aside other issues
such as linear vs plate modulation, why do you think it makes a difference
what tube is used? Are you referring to running a linear at greater than
legal limit?.

73,

Mark W1EOF



> -Original Message-
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
> Sent: Monday, January 30, 2006 5:01 PM
> To: [EMAIL PROTECTED]
> Cc: amradio@mailman.qth.net
> Subject: Re: [AMRadio] AM Transmitter Advice??
>
>
> Linears for AM -- here we go again for at least the third time in
> the past 12
> months.
>
> Basic considerations:
>
> 1.   Under carrier only conditions a correctly designed and
> adjusted linear
> amplifier will be operating at about 33% efficiency.   So, with a
> pair of 813's
> the math works out to 125 watts of carrier, obviously not worth
> the effort if
> you're starting off with a 100 W carrier exciter.
>
> 2.   The linear must be initially tuned up at the peak RF output
> value which,
> in turn, requires that the exciter (or some other source) must be
> capable of
> providing the input necessary to do this.   Typically, his would
> be 4 times
> the carrier value but expect to hear a lot more on this from the
> "asymmetrical
> speech waveform" crowd.
>
> 3.   "Real AM" can only come from a plate modulated class C PA in
> the view of
> certain members of this community.   At the same time, big mod iron is
> expensive and hard to find.   Also, for a legal max rig the wall
> plug efficiency of
> "high level" and "linear" is not that much different in the final
> analysis.
>
> Bottom line -- If you're going to build a linear do it right and go for a
> pair of 4-400's, single 4-1000A, 3-1000Z or one of the big
> Russian tubes I've
> seen on eBay recently.   I use my HB 3-1000Z amp on both SSB and
> AM, BTW.   Works
> FB.
>
> Good luck with the project.
>
> Dennis D. W7QHO
> Glendale, CA
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RE: [AMRadio] AM Transmitter Advice??

[W1EOF]

No problem with them mounted horizontally if in the correct plane. Example:
For years in the ARRL handbook 1960s there was an article that described
separate 813x2 amp for each band, all rack mounted. As a young ham in the
early 70s I would looke that and drool.

The 813 is a great tube, certainly very high on the watt-per-dollar chart.
It's always been one of my favorites along with the 810, 4-400, and the
4-125. I always thought the 4-125 would be great as a final for a say...
350W CW transmitter. Like the T-9er, but with more power out.

Anyone needing projects, or potential projects email me off-list.
No charge, I will give them away to a good home.

73,

Mark W1EOF

> -Original Message-
> From: Todd, KA1KAQ [mailto:[EMAIL PROTECTED]
> Sent: Monday, January 30, 2006 3:46 PM
> To: [EMAIL PROTECTED]; Discussion of AM Radio
> Subject: Re: [AMRadio] AM Transmitter Advice??
>
>
> On 1/30/06, W1EOF <[EMAIL PROTECTED]> wrote:
> >
> > I agree with Larry. I've been collecting the pieces for a 813x2
> desktop amp
> > for awhile now. I'm almost ready to begin.
>
> Hmmm... interesting. I actually have a nice horizontally-mounted CW
> 813 transmitter sitting up over the garage. I wonder what it would
> take to add a modulator?  I chuffed it into a Globe King cabinet
> because I wanted to use the rack for something else, and there it
> sits.
>
> Yesterday while I was playing around at building a "homebrew" (ala Don
> Chester) 40 meter dipole, I was listening on 40 to a few guys
> discussing the venerable 813. One of them was Tom M...Marcellano?
> W3BYM (I think). He's written a fair number of articles for ER as I
> recall, probably a few about 813 rigs. I think he said it was his
> favorite tube and had nothing but praise for it. At least one of the
> other guys either had or was running a 813 rig also. Wish now that I'd
> paid more attention, but it might've resulted in soldering my finger
> instead of the antenna.
>
> Has anyone ever mounted them horizontally to save space? I can't
> remember if it's a single tube or a pair. Sure is compact. Power
> supply is in the garage because it was too heavy to haul upstairs.
> Looks like a Beastly 610 transformer on the chassis.
>
> As an aside, I think K1JJ Tom is still building a rig with a pair of
> 813s blown through Dietz lantern globes as chimneys. There were
> pictures of it on amfone not long ago.
>
> de Todd/'Boomer'  KA1KAQ
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RE: [AMRadio] AM Transmitter Advice??

[W1EOF]

I agree with Larry. I've been collecting the pieces for a 813x2 desktop amp
for awhile now. I'm almost ready to begin. I have heard from many AM ops
that with the correct setup, a linear amp works great. As for the operation
of 813s on 10M, Ronnie is correct that some people have had trouble there. I
have some information from a ham who built an amp that runs from 160 - 10M.
All it took was specific consideration of the interelectrode capacitance on
10M. If you are really interested I could email you the scans he sent me
(once I get an OK from him).

Best of luck on it and please keep us all informed as to your progress!

73,

Mark W1EOF

> -Original Message-
> From: ronnie.hull [mailto:[EMAIL PROTECTED]
> Sent: Monday, January 30, 2006 3:11 PM
> To: Discussion of AM Radio
> Subject: Re: [AMRadio] AM Transmitter Advice??
>
>
>
>
> Larry
> for years I used a pair of 813's in grounded grid and drove them with a
> ranger. It produced great sounding audio. I still have that as my
> backup to my
> globe king.
>
> 813's are great tubes. The only drawback for me is I like to
> operate on ten
> meters and 813's are shakey at best, up there.
>
> good luck on your project, Iknow you will enjoy it.
>
> ronnie - W5SUM
>
> -- Original Message ---
> From: Larry Keith <[EMAIL PROTECTED]>
> To: Discussion of AM Radio 
> Sent: Mon, 30 Jan 2006 12:06:43 -0800 (PST)
> Subject: [AMRadio] AM Transmitter Advice??
>
> > Well, Let's see if we can change the subject.. 8-)
> >
> > I am gathering ideas for a homebrew AM transmitter..
> >
> > My friend, KR1S (Jim Kearman) is designing an AM
> > transceiver, for me.  We plan for this to be a
> > solid-state unit that will deliver about 100 watts
> > out. It will be single band (75 meters) and I have
> > been considering using that to feed a homebrew linear.
> > I have the makings of a 2 x 813 amp thanks to my and
> > Jim's hamfesting efforts.
> >
> > So far, we have been reading and kicking around ideas.
> >  It seems that with the derating of the amp to handle
> > the continuous carrier, etc.. may be more trouble than
> > it is worth.
> >
> > So, I would be interested in opinions as to the
> > relative merits of using a linear vs high-level
> > modulation.  And, pointers to existing circuits would
> > be helpful..
> >
> > Any ideas?
> >
> > 73,
> >
> > Larry
> > KQBY
> >
> > Larry Keith
> > 231 Shenandoah Trail
> > Warner Robins, GA 31088-6289
> > [EMAIL PROTECTED]
> > 478-329-0030 (home)
> >
> > __
> > Do You Yahoo!?
> > Tired of spam?  Yahoo! Mail has the best spam protection around
> > http://mail.yahoo.com
> > __
> > AMRadio mailing list
> > Home: http://mailman.qth.net/mailman/listinfo/amradio
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> > Post: mailto:AMRadio@mailman.qth.net
> > AMfone Website: http://www.amfone.net
> > AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb
> --- End of Original Message ---
>
> __
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>
>
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RE: [AMRadio] Why the League Petition would be BAD for AM

[W1EOF]

> -Original Message-
> From: VJB [mailto:[EMAIL PROTECTED]
> Sent: Thursday, January 26, 2006 4:28 AM
> To: amradio@mailman.qth.net
> Subject: [AMRadio] Why the League Petition would be BAD for AM


> I've already had one heckler,
> N2NGY, breaking into a QSO on 75m and telling us that
> your Petition will "finally do us in."



> Paul


I'm not diagreeing with you but consider the source
Paul (See below, from the ARRL website) -

73,

Mark W1EOF




BERKELEY HEIGHTS, NJ: The FCC sent a Warning Notice March 14, 2000, to
Advanced licensee Ronald Marshott, N2NGY, to advise him that information
before the Commission indicates the licensee has been "deliberately
interfering with the radio operations of other licensed amateurs on the
75-meter band." The FCC also said it has information that the licensee
"failed to identify, identified by call signs not your own, and have made
threats to other licensees." FCC Special Counsel for Amateur Radio
Enforcement Riley Hollingsworth warned Marshott that operation of the type
described "will not be tolerated" and could result in a fine and revocation
proceedings. Hollingsworth requested the licensee contact him to discuss the
matter.


January 15, 2002

Mr. Ronald Marshott
56 Briarwood Drive West
Berkely Heights, NJ 07922

RE: Warning Notice: Amateur Radio license N2NGY

Dear Mr. Marshott:

Monitoring information before the Commission indicates that you were
transmitting music during transmission on 3.832 MHz on the evening of
November 27, 2001.

Please be advised that such transmissions are contrary to the Commission's
rules regarding the Amateur Radio Service, and degrade the Service for
legitimate users. You are requested to review the Commission's rules for the
Amateur Service, particularly Section 97.113(a)(4).

You may call me at 717-338-2502 if you have any questions about this matter.



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[AMRadio] Music from the 40s

[W1EOF]

Todd -

I know it doesn't sound the same as those 6V6's pushing your speaker, but
there are streaming alternatives on the internet. Somebody said that WABC
streams although I have not checked out their website. There are also quite
a few on live365.com. My favorite though is WMKV in Ohio. Pretty much 24/7
40s style music. Lastly there is XM radio which has a channel devoted to 40s
music.

I don't have a good AM broadcast receiver setup in the office at the moment
but I will soon. I should be able to get WABC here in RI most nights.

73,

Mark W1EOF

> -Original Message-
> From: Todd, KA1KAQ [mailto:[EMAIL PROTECTED]
> Sent: Tuesday, January 24, 2006 9:37 AM
> To: Discussion of AM Radio
> Subject: Re: [AMRadio] (no subject)
>
>
> On 1/23/06, ne1s <[EMAIL PROTECTED]> wrote:
>
> > It was like being caught in a time warp. Some of my fondest childhood
> > memories are of hanging out in my grandfather's cellar in Chatham, NJ
> > building, fixing or otherwise diddling with some radio with
> WABC cranking
> > the tunes.
>
> I used to enjoy listening to big band music on 830 WCRN out of
> Worcester/Framingham area but they went to an oldies format sometime
> last year. I like oldies too, but it's hard to find 40s type music on
> AM these days so I miss WCRN in that sense. At 50kw, they have a
> potent signal up this way. You might give them a try too.
>
> There was also a station over in NY that played big band music a few
> years ago, but they got bought up by Disney and ended up playing
> children's music and soundtracks from Disney movies. Think it was
> WQEW? Up near the top of the dial.
>
> It's always more enjoyable to hear some old music on AM broadcast
> rather than more talk radio, but to me at least, there's nothing like
> hearing some Glenn Miller or Tommy Dorsey tunes rumbling out of a big
> old speaker with the receiver dials and tubes glowing away.
>
> Thanks for passing this on, Larry - I'll have to fire up that SX-28A
> in the front foyer that you were tuning around with in December - bet
> it'll sound great, WABC always comes in here well. (o:
>
> de Todd/'Boomer'  KA1KAQ
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RE: [AMRadio] OT but ya never know

[W1EOF]

John -

I have passed this along on the Tube Collectors Association list. There are
several members who collect this kind of stuff in addition to vacuum tubes.

73,

Mark W1EOF

> -Original Message-
> From: John Lawson [mailto:[EMAIL PROTECTED]
> Sent: Friday, January 20, 2006 9:19 PM
> To: amradio@mailman.qth.net
> Subject: [AMRadio] OT but ya never know
>
> I would like to find someone who has one of the old Technicolor CVC video
> machines or cameras that still is working in playback mode.
>   If you have such a beast languishing deep in a closet or up on a high
> shelf - please contact me privately off-list.
>Will buy or borrow - pay all shipping, etc.
>Thanks!
> Cheers
> John  KB6SCO
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RE: [AMRadio] Why I have not been on the radio the last few days

[W1EOF]

My thoughts and prayers for your daughter and your entire family for a
speedy and full receovery OM.

73,

Mark W1EOF

> -Original Message-
> From: Donald Chester [mailto:[EMAIL PROTECTED]
> Sent: Friday, January 20, 2006 5:19 PM
> To: amradio@mailman.qth.net
> Subject: [AMRadio] Why I have not been on the radio the last few days
>
>
>
> http://www.theleafchronicle.com/apps/pbcs.dll/article?AID=/2006011
> 9/NEWS01/601190314/1002/NEWS17
>
> http://www.dnj.com/apps/pbcs.dll/article?AID=/20060118/NEWS01/6011
80335/1002


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RE: [AMRadio] RE: This is so neat - VanityHQ.com map

[W1EOF]

Hi Bob - 
Just looked up W6TR and it says Extra. 
I typed your call into the searchbox on the left.
Where are you seeing General?

73,

Mark W1EOF


> -Original Message-
> From: Bob Maser [mailto:[EMAIL PROTECTED]
> Sent: Thursday, January 19, 2006 3:25 PM
> To: Discussion of AM Radio
> Subject: Re: [AMRadio] RE: This is so neat - VanityHQ.com map
> 
> 
> Most of them are outdated.  I looked up mine and it shows that I am a 
> general and I think that I was a General back in 1965.  The address is 
> correct though.
> 
> Bob W6TR
> - Original Message - 
> From: "Keith Anderson" <[EMAIL PROTECTED]>
> To: 
> Sent: Thursday, January 19, 2006 11:01 AM
> Subject: [AMRadio] RE: This is so neat - VanityHQ.com map
> 
> 
> All the list,
> 
> I found 21 currently licensed hams in my immediate area alone using the 
> VanityHQ.com callbook map. Ranging in license class from Novice 
> to Amateur 
> Extra.
> 
> 73 to all,
> Keith, Houston, TX, USA
> 
> 
> ___
> Try Juno Platinum for Free! Then, only $9.95/month!
> Unlimited Internet Access with 1GB of Email Storage.
> Visit http://www.juno.com/value to sign up today!
> 
> __
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> AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb 
> 
> __
> AMRadio mailing list
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> 
> 
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RE: [AMRadio] Web page appears in opposition to RM-11306

[W1EOF]

There is a difference between LEGAL and considerate Don. There are many
activities
that I COULD legally participate in I don't. Because it would be
inconsiderate and rude.
I would be ashamed of myself to win points in a contest while I stepped all
over my
fellow hams enjoyment of the hobby.

I guess that's my point exactly and why I find myself in a quandry about
RM-11305. In
theory it sounds good but I wonder how many hams will take the attitude
"It's perfectly
legal for me operate SSB on 7002, so I will."???

73,

Mark W1EOF


> Nothing shameful about getting a l icence to operate in the
> country you are
> visiting and using it according to the rules of that country.
> The shame is
> with the contest sponsors who refuse to write contest rules that require
> contesters to follow the accepted band plan.
>
> I'd bet the people with the above attitude are some of the same
> ones who are
> opposed to RM-11305 and are pushing for subband restrictions for 160.
>
> Hypocrites selfishly pushing their own agenda.
>
> Don K4KYV
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RE: [AMRadio] Web page appears in opposition to RM-11306

[W1EOF]

Boy Phil I totally agree with you. In theory anyway.

During the last CQ WW SSB contest participants were operating all the way
down to 7.002 on 40M. I wrote to several people at CQ Magazine asking why
they did not voluntarily restrict the frequencies available for the contest.
This to me was the mot obvious way to solve the problem.

Only got one response, from some guy who was not at CQ Magazine. He said it
was not their business to police it, and those amateurs who operated down
there were legally operating under the rules of their country. I got no
official answer from CQ. Neither did anyone else I know who wrote to them.
Personally I think the most shameful of all are the American hams that get a
license from the country they are visiting so they can operate without
hinderance from those nasty sub-bands.

Maybe I should subscribe so I can pull my subscription in protest?

73,

Mark W1EOF


> -Original Message-
> From: Phil Galasso [mailto:[EMAIL PROTECTED]
> Sent: Wednesday, January 18, 2006 8:32 PM
> To: Discussion of AM Radio
> Subject: Re: [AMRadio] Web page appears in opposition to RM-11306

>  The only problems that I
> ever hear seem
> to occur during contests...and perhaps, if people are concerned about
> contesters operating incompatible modes, violating the IARU bandplans, and
> "stepping on" DX windows, they should lean on the organizations
> that sponsor
> those contests: ARRL, CQ Magazine, some of the foreign clubs and
> societies,
> etc., getting them to limit the contests to portions of each band
> (voluntarily, not through government regulation) and to disqualify any
> contester who doesn't comply with the IARU bandplans. If enough
> contest logs
> are thrown out due to contesters violating the IARU bandplans, those
> contesters will clean up their act quite fast. No contester wants
> to operate
> all weekend, only to get a score of ZERO!
>
> Phil Galasso
> K2PG

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RE: [AMRadio] Web page appears in opposition to RM-11306

[W1EOF]

Jim -

I am a CW op about 99% of the time. Yet I have to be honest and say I agree
with you on 80M. Other than during a contest, we can give up some space to
phone operation. I'd say to be fair a starting point would be 3700. Maybe
3650. However I disagree on 40M and 20M, especially 40M. Almost every night
that little sliver of usable band is filled with CW signals. If you are not
an Extra, as a CW op your version of 40M is 7026 - 7046 most night. 20kc.
Not a heck of lot of room ro stretch out at all. I'd love to be able to get
that @*&[EMAIL PROTECTED] broadcast out of 40M. Holy moly if we had that whole 
band
unmolested it would be a GREAT place to play.

Just my feelings as a CW op.

73,

Mark W1EOF

> -Original Message-
> From: Jim Wilhite [mailto:[EMAIL PROTECTED]
> Sent: Monday, January 16, 2006 10:21 PM
> To: Discussion of AM Radio
> Subject: Re: [AMRadio] Web page appears in opposition to RM-11306

> hope, but the
> fact remains, more space is needed for phone operation and the
> lower half of
> 80, 40,and 20 are under utilized.
>
> 73  Jim
> W5JO

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RE: [AMRadio] Web page appears in opposition to RM-11306

[W1EOF]

I agree Brian! I've heard encroachment by SSB stations before, but never
down as far as that last contest. Some people I wrote to said I had to be
making it up, that they stopped at 7025 or 7030. But like you, I copied a
SSB station calling "CW Contest" on 7002. Disgraceful. I try to not get an
attitude toward contesters. It's never been my "thing" but I understand that
there are plenty of areas in ham radio that don't interest me but do others.
Maybe it's the excitement of the chase, but it seems like contesters take
the cake on rudeness and inconsideration when they get into the thick of it.
Let me also say that I'm sure 90% of contesters don't behave like this.

But as we all know it only takes one or two idiots to make any group look
bad. This is why some hams have problems with AM'ers. All it takes is one
splatter-happy clod, one idiot playing music, etc to make up the minds of
many that ALL AM'ers are idiots. Most of us are not like that but we get
painted with the same brush. Good thing to keep in mind when you're thinking
badly about some other group. :-)

73,

Mark W1EOF


> -Original Message-
> From: Brian Carling [mailto:[EMAIL PROTECTED]
> Sent: Monday, January 16, 2006 6:15 PM
> To: Discussion of AM Radio
> Subject: Re: [AMRadio] Web page appears in opposition to RM-11306
>
>
> On 16 Jan 2006 at 22:53, Donald Chester wrote:
>
> > The IARU band plan say no phone below 7050.  Obviously the Canadian and
> > Mexican hams, plus who knows what other countries south of the
> border, are
> > not following the plan.  The IARU does not have any enforcement
> power.  The
> > band plan is merely a suggestion, not a legal restriction.
> Canada and (I
> > assume) Mexico have no emission subband limitations; they can legally
> > transmit phone all the way down to 7000.  The US is the only
> country in the
> > region (and is suspect the world) that PROHIBITS phone below 7150.
> >
> > Another aspect of the problem is the US licence class subband
> structure.
> > 7000-7025 is limited to extra class only, so non-extra US hams
> can work cw
> > only from 7025 up, and the cw activity rarely goes above 7040
> or 7050, so
> > for all practical purposes US Advanced and General class ops
> are limited to
> > a very narrow segment just above 7025 for cw operation.
> >
> > Since the US Extra class cw requirement has been reduced to the
> 5 wpm Novice
> > level, and there is no longer any distinction in the code
> requirement for
> > Extra, Advanced, General or Novice, what is the point of
> continuing to set
> > aside an exclusive 25 kc/s segment for Extra class cw?
> >
> > In Region 1 (Europe) the entire 40m band is only 7000-7100,
> except for some
> > recently opened limited use of 7100-7200.  Hopefully the
> broacast issue we
> > be resolved and 7100-7200 will eventually become exclusive amateur
> > worldwide.
>
> Don is quite right. The whole thing has fallen like a deck of cards.
> The U.S> regulations are more out of step (and out of
> compatibility)
> than ever before, particularly on 40m.
>
> In the last contest I listened to, there were non-U.S.
> stations running SSB pile ups all the way down to 7002 KHz.
> Yes boys, 7002! SO much for foretelling how the "gentlemen's
> agreements" are going to work on all of the bands when the
> ARRL gets their absurd bandwidth scheme in place!
>
> "Gentlemen's agreements" only work among gentlemen.
>
> __
> AMRadio mailing list
> Home: http://mailman.qth.net/mailman/listinfo/amradio
> Help: http://mailman.qth.net/mmfaq.html
> Post: mailto:AMRadio@mailman.qth.net
> AMfone Website: http://www.amfone.net
> AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb
>
>
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RE: [AMRadio] Web page appears in opposition to RM-11305

[W1EOF]

Sorry Bob but I diasagree. I'm not an Extra but is it so bad to have a
little space set aside as incentive for people to study more and improve
their ticket? If you don't want to, you still have 99.999% of the ham bands
available to you. Do we really ALL have to be in one big feel-good
all-the-same soup?

73,

Mark W1EOF


> -Original Message-
> From: Bob Macklin [mailto:[EMAIL PROTECTED]
> Sent: Monday, January 16, 2006 6:37 PM
> To: Discussion of AM Radio
> Subject: Re: [AMRadio] Web page appears in opposition to RM-11305
>
>
> The 25KC at the lower edge of the bands is the only incentive to get an
> EXTRA class ticket. And in the US they can only communicate with other
> EXTRAs in that segment!
>
> BIG WASTE!
>
> Bob Macklin
> K5MYJ
> Seattle, Wa.
>
> - Original Message -
> From: "Donald Chester" <[EMAIL PROTECTED]>
> To: 
> Sent: Monday, January 16, 2006 2:53 PM
> Subject: Re: [AMRadio] Web page appears in opposition to RM-11305
>
>
> > >From: "Brian Carling" <[EMAIL PROTECTED]>
> >
> > >On 16 Jan 2006 at 11:22, bud chiller wrote:
> > >
> > > >  IARU does not
> > > > allow phone emissions below 7050Khz in region 2!
> > >
> > >I am just trying to understand all of this...
> > >Why do we have Canadian and Mexican SSB signals all
> > >over 7030 - 7060 kHz NOW if they are not allowed to do it?
> > >
> > >We're drifting downward in frequency here from AM concerns
> > >I know, but it IS related for those of us who work both AM AND
> > >CW.
> >
> >
> > The IARU band plan say no phone below 7050.  Obviously the Canadian and
> > Mexican hams, plus who knows what other countries south of the
> border, are
> > not following the plan.  The IARU does not have any enforcement power.
> The
> > band plan is merely a suggestion, not a legal restriction.
> Canada and (I
> > assume) Mexico have no emission subband limitations; they can legally
> > transmit phone all the way down to 7000.  The US is the only country in
> the
> > region (and is suspect the world) that PROHIBITS phone below 7150.
> >
> > Another aspect of the problem is the US licence class subband structure.
> > 7000-7025 is limited to extra class only, so non-extra US hams
> can work cw
> > only from 7025 up, and the cw activity rarely goes above 7040
> or 7050, so
> > for all practical purposes US Advanced and General class ops are limited
> to
> > a very narrow segment just above 7025 for cw operation.
> >
> > Since the US Extra class cw requirement has been reduced to the 5 wpm
> Novice
> > level, and there is no longer any distinction in the code
> requirement for
> > Extra, Advanced, General or Novice, what is the point of
> continuing to set
> > aside an exclusive 25 kc/s segment for Extra class cw?
> >
> > In Region 1 (Europe) the entire 40m band is only 7000-7100, except for
> some
> > recently opened limited use of 7100-7200.  Hopefully the
> broacast issue we
> > be resolved and 7100-7200 will eventually become exclusive amateur
> > worldwide.
> >
> > -k4kyv
> >
> > ___
> >
> > This message was typed using the DVORAK keyboard layout.  Try
> it - you'll
> > like it.
> > http://www.mwbrooks.com/dvorak/
> > http://gigliwood.com/abcd/
> >
> >
> > __
> > AMRadio mailing list
> > Home: http://mailman.qth.net/mailman/listinfo/amradio
> > Help: http://mailman.qth.net/mmfaq.html
> > Post: mailto:AMRadio@mailman.qth.net
> > AMfone Website: http://www.amfone.net
> > AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb
> >
> __
> AMRadio mailing list
> Home: http://mailman.qth.net/mailman/listinfo/amradio
> Help: http://mailman.qth.net/mmfaq.html
> Post: mailto:AMRadio@mailman.qth.net
> AMfone Website: http://www.amfone.net
> AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb
>
>
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RE: [AMRadio] Re: Your comments about AM

[W1EOF]

EXACTLY Brian. Just as it's always been. And many of the creative employees
in private industry are hams.

73,

Mark W1EOF

> -Original Message-
> From: Brian Carling [mailto:[EMAIL PROTECTED]
> Sent: Monday, January 16, 2006 2:10 PM
> To: Clay Curtiss W7CE; Discussion of AM Radio
> Subject: Re: [AMRadio] Re:  Your comments about AM
>
>
> Whatever. I think we're splitting hairs now.
>
> The fact is that hams are not in the forefront now, but private
> industry is, and has been for decades.
>
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RE: [AMRadio] recent comments on AM

[W1EOF]

Oh yeah... you are probably on that "special" list where they make sure you
don't receive your QST or ARRL emails. That explains it then.

You're a hoot Brian! This stuff is so silly...

I'm taking my foil hat off now and going back to thinking about radio.

73,

Mark W1EOF



> -Original Message-
> From: Brian Carling [mailto:[EMAIL PROTECTED]
> Sent: Friday, January 13, 2006 6:56 PM
> To: W1EOF
> Subject: RE: [AMRadio] recent comments on AM
>
>
> They never asked me for my opinion.
>
> I was a member at the time.
>
> On 13 Jan 2006 at 18:30, W1EOF wrote:
>
> >
> > Hi Brian -
> >
> > I don't understand how this is even a point of contention.
> There are many
> > different points available for contention or discussion in this
> matter such
> > as what they did after they got the results of the poll, etc.
> >
> > FACT: The ARRL polled their members. I am a member. I got
> polled. I gave my
> > opinion. All the other ARRL members I know were also polled too. I don't
> > think it adds anything meaningful to the discussion when we get arguing
> > about things which are indisputable facts.
> >
> > To deny the fact that they asked for, and got their members
> opinions is just
> > silly isn't it?
> >
> > 73,
> >
> > Mark W1EOF
> >
> >
> >
> > > -Original Message-
> > > From: Brian Carling [mailto:[EMAIL PROTECTED]
> > > Sent: Friday, January 13, 2006 5:35 PM
> > > To: Discussion of AM Radio
> > > Subject: Re: [AMRadio] recent comments on AM
> > >
> > >
> > > No, you let us know how they did such a great job of polling radio
> > > amateurs instead of side stepping and claiming that they did...
> > >
> > > Where's the beef?
> > >
> > > On 13 Jan 2006 at 15:15, peter markavage wrote:
> > >
> > > > Thanks for the English lesson. Let me know when you have more to
> > > > contribute to my grammar.
> > > > Pete, wa2cwa
> > > >
> > > > On Fri, 13 Jan 2006 15:05:13 -0500 "Brian Carling"
> <[EMAIL PROTECTED]>
> > > > writes:
> > > > > On 13 Jan 2006 at 14:46, peter markavage wrote:
> > > > >
> > > > > > ARRL "request for comments to the draft proposal" is fully
> > > > > documented.
> > > > >
> > > > > Fully?
> > > > >
> > > > > As compared to what? Half-documented?
> > > > > How do you partially document something?
> > > > __
> > > > AMRadio mailing list
> > > > Home: http://mailman.qth.net/mailman/listinfo/amradio
> > > > Help: http://mailman.qth.net/mmfaq.html
> > > > Post: mailto:AMRadio@mailman.qth.net
> > > > AMfone Website: http://www.amfone.net
> > > > AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb
> > > >
> > >
> > >
> > > __
> > > AMRadio mailing list
> > > Home: http://mailman.qth.net/mailman/listinfo/amradio
> > > Help: http://mailman.qth.net/mmfaq.html
> > > Post: mailto:AMRadio@mailman.qth.net
> > > AMfone Website: http://www.amfone.net
> > > AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb
> > >
> > >
> > > --
> > > No virus found in this incoming message.
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> >
>
>
>
>
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RE: [AMRadio] recent comments on AM

[W1EOF]

Hi Brian -

I don't understand how this is even a point of contention. There are many
different points available for contention or discussion in this matter such
as what they did after they got the results of the poll, etc.

FACT: The ARRL polled their members. I am a member. I got polled. I gave my
opinion. All the other ARRL members I know were also polled too. I don't
think it adds anything meaningful to the discussion when we get arguing
about things which are indisputable facts.

To deny the fact that they asked for, and got their members opinions is just
silly isn't it?

73,

Mark W1EOF



> -Original Message-
> From: Brian Carling [mailto:[EMAIL PROTECTED]
> Sent: Friday, January 13, 2006 5:35 PM
> To: Discussion of AM Radio
> Subject: Re: [AMRadio] recent comments on AM
>
>
> No, you let us know how they did such a great job of polling radio
> amateurs instead of side stepping and claiming that they did...
>
> Where's the beef?
>
> On 13 Jan 2006 at 15:15, peter markavage wrote:
>
> > Thanks for the English lesson. Let me know when you have more to
> > contribute to my grammar.
> > Pete, wa2cwa
> >
> > On Fri, 13 Jan 2006 15:05:13 -0500 "Brian Carling" <[EMAIL PROTECTED]>
> > writes:
> > > On 13 Jan 2006 at 14:46, peter markavage wrote:
> > >
> > > > ARRL "request for comments to the draft proposal" is fully
> > > documented.
> > >
> > > Fully?
> > >
> > > As compared to what? Half-documented?
> > > How do you partially document something?
> > __
> > AMRadio mailing list
> > Home: http://mailman.qth.net/mailman/listinfo/amradio
> > Help: http://mailman.qth.net/mmfaq.html
> > Post: mailto:AMRadio@mailman.qth.net
> > AMfone Website: http://www.amfone.net
> > AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb
> >
>
>
> __
> AMRadio mailing list
> Home: http://mailman.qth.net/mailman/listinfo/amradio
> Help: http://mailman.qth.net/mmfaq.html
> Post: mailto:AMRadio@mailman.qth.net
> AMfone Website: http://www.amfone.net
> AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb
>
>
> --
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RE: [AMRadio] Millen High Voltage Connectors

[W1EOF]

They are fine when the connection is inside an interlock protected cabinet.
Not very conveinent for troubleshoting or working on the equipment, but they
work fine. If the connector is outside the cabinet then naturally it must
not have an exposed terminal.

I also agree on the RF connectors for high voltage. Even if it's marked it
is too easy for you, or someone else to make a fatal mistake. This is made
worse by using coax (a common RF cable). That's just bad design.

Spend a few extra bucks and get the proper connector, one that's safe. Life
is too short to mess around.

73,

Mark W1EOF

> -Original Message-
> From: Brett gazdzinski [mailto:[EMAIL PROTECTED]
> Sent: Monday, January 09, 2006 6:56 PM
> To: 'Discussion of AM Radio'
> Subject: RE: [AMRadio] Millen High Voltage Connectors
>
>
> What is wrong with ceramic feedthroughs?
>
> I don't think I like the idea of using RF connectors for high voltage,
> what happens if you or someone else mix it up with RF antenna or output
> stuff?
>
> Brett
> N2DTS
>
> -Original Message-
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] On Behalf Of Ed Swynar
> Sent: Monday, January 09, 2006 4:01 PM
> To: Discussion of AM Radio; [EMAIL PROTECTED]
> Subject: Re: [AMRadio] Millen High Voltage Connectors
>
> Hi Dave,
>
> I solved the problem of HV B+ arc-overs here by exclusively using NOTHING
> but good-quality SO-239 coax receptacles, & RG-8 coax lines for the B+
> leads, terminated in good-quality PL-259's...
>
> Works like the proverbial charm --- have yet to encounter ANY arc-over
> failures since adopting this approach universally at my station
> in the late
> 70's...
>
> ~73~ Eddy VE3CUI - VE3XZ
>
> PS: Emphasis on the words "...good-quality" --- NONE OF THAT CHINESE JUNK
> here!!!
>
>
>
>
>
>
> - Original Message -
> From: "david knepper" <[EMAIL PROTECTED]>
> To: ; <[EMAIL PROTECTED]>
> Sent: Monday, January 09, 2006 3:50 PM
> Subject: [AMRadio] Millen High Voltage Connectors
>
>
> > My homebrew transmitter,  designed by Stan, W3TGR now a silent key,  is
> > going through exhaustive and often frustrating testing.  Stan
> used lots of
> > shielded wire - you know the Belden stuff that is deteriorating
> over time
> > with brittle insulation on the wire. I had to replace several leads
> because
> > the center conductor was shorting to ground when the insulation became
> > brittle.  So it goes ...
> >
> > Today, I thought that I had finally debugged the unit - pair of 813's
> > modulated by 805's - but I heard the troubling sound of high voltage to
> > ground.  Measuring the Millen connectors to ground revealed a
> short.  Here
> > the Millen connectors on the modulator were arcing to ground on the
> > secondary side of the modulation transformer running from the
> high voltage
> > through the secondary winding to the PA amplifier.   I am using those
> light
> > tan units that are supposed to be better than the red connectors.  Stan
> used
> > these connectors on the PA amplifier, the modulator deck, and the high
> > voltage power supply.
> >
> > I suppose that under modulation that the peaks exceeded the
> voltage rating
> > of the Millen connectors.  Once before many years ago, I had the same
> > problem.  However, these connectors are often used in homebrew
> construction
> > projects as described in the ARRL handbook.
> >
> > Any ideas out there other than to go with ceramic feedthrough
> insulators.
> >
> > Perhaps, it is because of their age and the insulation is breaking down.
> > Who knows!
> >
> > Thanks
> >
> > Dave, W3ST
> > Publisher of the Collins Journal
> > Secretary to the Collins Radio Association
> > www.collinsra.com - the CRA Website
> > Now with PayPal
> > CRA Nets: 3805 Khz every Monday at 8 PM EST
> > and 14255 every Saturday at 12 Noon EST
> >
> >
> > __
> > AMRadio mailing list
> > Home: http://mailman.qth.net/mailman/listinfo/amradio
> > Help: http://mailman.qth.net/mmfaq.html
> > Post: mailto:AMRadio@mailman.qth.net
> > AMfone Website: http://www.amfone.net
> > AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb
> >
>
>
> __
> AMRadio mailing list
> Home: http://mailman.qth.net/mailman/listinfo/amradio
> Help: http://mailman.qth.net/mmfaq.html
> Post: mailto:AMRadio@mailman.qth.net
> AMfone Website: http://www.amfone.net
> AM

[AMRadio] Modulator iron & ideas needed

[W1EOF]

I want to put my EF Johnson 6N2 on the air, and I don't want to use a Ranger
of Valiant to drive it. So
I'm going to build a power supply and modulator so I can run it stand-alone.
Questions:

1. Does anyone have suitable iron for sale for a 50W modulator for it? One
source has told me that a
DX-100 modulator works FB,  so anything in that class would do fine I'm
sure.

2.Has anyone does this before?

Either way do you have any hints/kinks/thoughts on it before I get started?

73,

Mark W1EOF
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RE: [AMRadio] Kenyon T180?

[W1EOF]

My Kenyon data does not list that number. If it's something like a T-177 or
T-181 then it's about 10hy, 500ma, 5000v isolation, 7A case size. But that's
just a guess based on those part numbers.

73,

Mark W1EOF

> -Original Message-
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
> Sent: Sunday, January 08, 2006 9:51 AM
> To: amradio@mailman.qth.net
> Subject: [AMRadio] Kenyon T180?
>
>
> Hi all:
>
> Might anyone know the spec for the Kenyon T-180 choke?
>
> Tnx,
> Steve
> WA2TAK
> __
> AMRadio mailing list
> Home: http://mailman.qth.net/mailman/listinfo/amradio
> Help: http://mailman.qth.net/mmfaq.html
> Post: mailto:AMRadio@mailman.qth.net
> AMfone Website: http://www.amfone.net
> AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb
>
>
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RE: [AMRadio] coils

[W1EOF]

Hi Brett -

Nice looking work. You must take your time, and I'm guessing enjoy some wine
as you build. :-)

Is that an amplifier or an exciter? I'm curious about the vernier dials.
I've never seen them used
except on a self-excited radio where the tuning is *VERY* critical.
Otehrwise it would seem
like a real pain to have to twist the knob so many times to go from one band
to another.

73,

Mark W1EOF

> -Original Message-
> From: Brett gazdzinski [mailto:[EMAIL PROTECTED]
> Sent: Sunday, January 08, 2006 6:49 PM
> To: 'Discussion of AM Radio'
> Subject: RE: [AMRadio] coils
>
> If it does not need to be real small, one way to get a good coil
> is to wind one out of copper tubing.
> Home depot sells various types, small/thin, bigger and thicker...
> I made the pi net tank coil for the pair of 4D32 rf deck out of copper
> tubing,
> I soldered big wire terminal lugs (the crimp on type) on the ends of the
> coil and bolted it to large ceramic standoff insulators.
> Here is a link to a picture:
> http://wa5bxo.shacknet.nu/N2DTS/new%20coil-a.JPG
>
> My thanks to wa5bxo who still has my pictures up!
> The wine bottle in the picture was used to wind the tubing on.
> The home brew receivers are in the background...
>
> Brett


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