YOU NEED A SCREWDRIVER, MOST LIKELY THE PRONGS
HAVE SET IN PLACE. PRY THE THING OUT WITH THAT OR A SMALL POCKET KNIFE.
ON MY METER THE PRONGS THAT GO INTO THE BACK OF THE METER HAD DEVELOPED
SOME CORROSION AROUND THE EXIT FOR THE WIRES AS WELL, JUST POP THE THING
OUT.
SHOULD BE ALRIGHT.
JIM
Well I tried to send you the BC-610 MANUAL in PDF your mail service can't
handle it sorry!
Jim
WB2FCN
- Original Message -
From: crawf...@surfmore.net
To: Discussion of AM Radio in the Amateur Service
amradio@mailman.qth.net
Sent: Saturday, May 29, 2010 11:53 AM
Subject: Re:
Try this go here,
http://eshop1.chem.buffalo.edu/Beastly-610.html
Jim
WB2FCN
- Original Message -
From: crawf...@surfmore.net
To: Discussion of AM Radio in the Amateur Service
amradio@mailman.qth.net
Sent: Saturday, May 29, 2010 11:53 AM
Subject: Re: [AMRadio] TU47 BC-610 Tuning Unit
The Schematic is Usually on the case of the tuning unit. If not it is
definitely
in the BC-610 manual with the proper values for components.
Jim
WB2FCN
http://eshop1.chem.buffalo.edu
- Original Message -
From: crawf...@surfmore.net
To: amradio@mailman.qth.net
Sent: Saturday, May 29,
I can do it, if you like.
Jim
WB2FCN
Send file to che...@buffalo.edu
- Original Message -
From: Jim Wilhite w...@brightok.net
To: AM Radio Discussion List amradio@mailman.qth.net
Sent: Tuesday, July 07, 2009 11:49 AM
Subject: [AMRadio] Anyone with an FTP program
Who can upload to
Well it's back, and at a higher price than the last time.
Maybe it's like aging fine wine!
BC-610 you know where, Item number:200344030668
Jim
WB2FCN
What a Country
__
Our Main Website: http://www.amfone.net
AMRadio mailing list
Kim,
Send me and email I have a question for you about NOAA.
Off list please.
Jim
WB2FCN
- Original Message -
From: Kim Elmore cw_de_n...@sbcglobal.net
To: j...@vla.com; Discussion of AM Radio in the Amateur Service
amradio@mailman.qth.net
Sent: Sunday, February 08, 2009 11:38 AM
If I might make a suggestion,
Check the ground lugs around the clamp tube and vicinity.
Make sure they are tight, and also check for any signs of
arcing.
Jim
WB2FCN
Three working Apaches and counting.
- Original Message -
From: Mike Sawyer w3...@verizon.net
To: k5...@yahoo.com;
Actually,
If you use the 20A to drive a linear amplifier, such as the Johnson
Thunderbolt, you would have a quite substantial AM signal, at about
350 watts of carrier. In the CW mode the power output, can exceed 500 watts,
just a matter of how you are set up for the Event.
I use mine, when I can
Hi Paul, es others,
I just have one thing to say?
STRAP
Jim
WB2FCN
P.S. Paul, I was talking with someone recently about you, ALL Good!
- Original Message -
From: VJB [EMAIL PROTECTED]
To: amradio@mailman.qth.net
Sent: Wednesday, July 30, 2008 3:17 PM
Subject: [AMRadio] 4-1000 BC Rig
The Audio Phools have finally reached the Epitome of silliness.
found at : web page www dot usa dot denon dot com/productdetails/3429.asp
I think I am definitely in the wrong business!
Jim
WB2FCN
__
Our Main Website:
Anyone on from the Atlanta area, with info about phone/internet service to
the
area there.
Jim
WB2FCN
__
Our Main Website: http://www.amfone.net
AMRadio mailing list
Searchable Archives:
Bill Breashear (sp) did an article in ER to convert an SB-401 to AM
some time back.
Jim
WB2FCN
Just dropping in
- Original Message -
From: John Coleman [EMAIL PROTECTED]
To: 'Discussion of AM Radio in the Amateur Service'
amradio@mailman.qth.net
Sent: Friday, February 08, 2008 11:44
- Original Message -
From: John King [EMAIL PROTECTED]
To: amradio@mailman.qth.net
Sent: Thursday, January 17, 2008 11:32 AM
Subject: [AMRadio] Loading antenna with BC 610 E
I am thrilled to report that I have my RRd BC 610 E
putting out lots of RF (about 370 watts) into a 50 ohm
Ola Gang,
The setup here is as follows:
BC-610(*) output SO-239 to PL-259 coax run, to PL-259
to TX connector on E.F. Johnson TR-Switch. Antenna connector
PL-259 to N connector.
N Connector goes to the input of the ME-165 SWR/Wattmeter.
N COnnector to output side of ME-165, coax run goes to input
Well if it crashed all the computers in a car moving at a high rate of
speed, that pretty much guarantees there will be injuries, as the ABS
system is computer controlled. We have been laughing at that artical for
about
three months, seems the dissemination system, is resembling a
Back when I was a a novice, and not old enough to buy beer, I built the
forty meter version out of tin down spout. Mounted the thing on the garage
roof, and ran the support/radials to the corners. Worked all states after
school evenings on CW as a highschool Junior. I might mention the coil
and
Sri Bill,
I am having a little trouble understanding your problem.
I run an HT-37, the balance controls on it work similar to the SB-10 and
the heathkit Apache, and the Central Electronics 10A/B and 20A.
Might you explain your sequence for clarification? I might be able to help.
Jim
WB2FCN
I remember an AN/GRC-26D outside of MACV HQ. We used to get hook-ups
back to Ft. Bragg, es 18TH ABN Corps. They would connect us to 5th S.F. Hq.
The link was using AN/GRC-26Ds on both ends (AM) and also the remotes were
tied in with TA-312s at each end. The audio quality was good, as was the
Well,
In order of preference:
SP-600JX-17
R-390A
SX-101
NC-183D
NC-303
All are switch selectable audio output, to an EICO audio selector driving an
EICO 10 watt amplifier, which drives a Studio Speaker.
'Most Excellent'
73
Jim
WB2FCN
- Original Message -
From: Kim Elmore [EMAIL
Grainger, Home Depot if you go to the Contractors counter, Richardson
Electronics
on the web, or Mcmaster-Carr!
That's where I got mine and spares, for my BC-610(EI). As for how I connect
it to AC I have a 30 Amp. line that runs to the operating position, where it
is
connected to a 0 - 130
Which model?
Jim
WB2FCN
- Original Message -
From: John Coleman [EMAIL PROTECTED]
To: 'Discussion of AM Radio in the Amateur Service'
amradio@mailman.qth.net
Cc: 'Perry Mason' [EMAIL PROTECTED]
Sent: Thursday, June 21, 2007 2:42 PM
Subject: [AMRadio] BC610 modulation XFMR
My Friend
Actually,
If you are truly interested in getting a 500 KC segment for Amateur, I would
suggest you contact Fritz Raab the coordinator for the project, and get your
name and info added to the list of folks that want to join in.
His info is at the 500 KC site as well, but here it is also.
No typo,
try this http://www.500KC.com
Jim
WB2FCN/WD2XSH-22
- Original Message -
From: John Coleman [EMAIL PROTECTED]
To: 'Discussion of AM Radio in the Amateur Service'
amradio@mailman.qth.net
Sent: Wednesday, June 13, 2007 11:15 AM
Subject: RE: [AMRadio] 450T amp
Am I missing
If the M.O. output is stable, with and without keying, then it would be just
fine, for CW anyway, one of my transmitters is the RCMA ET-8010A
pair of 211s in the final 807 driver, 807 M.O. and is extremely stable for
that era, remarkably so.
There are those who would say you need the latest
Great photos Brian,
Looks like its coming along nicely. Patience is a good thing to have at this
point,
and don't stop showing those pictures, I am sure others will get the bug
to
save a big rig for themselves.
When I got my RCA BTA1-M, I took a week off from work and spent the
time putting
Hi Folks,
I have for sale a New, gently used Icom 756 Pro III
will sell for 2500.00 Plus shipping costs.
Thanks for the read.
Jim
WB2FCN__
AMRadio mailing list
List Rules (must read!): http://w5ami.net/amradiofaq.html
List Home:
Hi Folks,
I have the following items for sale. All items are only slightly used not
banged up.
ICOM PS-125 #1 13.8 VDC 25Amp. 100.00 plus shipping.
ICOM PS-125 #2 13.8 VDC 25Amp. 100.00 plus shipping.
BIRD Model 43 Wattmeter No slugs. No Leather case. 100.00 plus shipping.
BIRD 50H Slug
Hey Paul,
Your basic BC-610 will get there either with the proper crystal, or even the
tuning unit TU-54. I am reasonably sure the RF Plate coil C-449B would
handle
it as well. It is recommended though that you have checked the neutralizing
before
operation, but it could be done.
Same with
FWIW,
I run four DX-100s in various systems, and the quickest way I know to
burn out the HV transformer is to solid state the power supply. Caveaut
Emptor, but I did the solid sate thing, it ran for a couple of weeks, then
poof!
HV transformer went. Only thing I know that does it quicker is
Howdy,
I don't know the BTA-5T, but Brad KB7FQR has the BTA-5F, and I have
posted pictures of his setup at
http://eshop1.chem.buffalo.edu/KB7FQR-Page.html
WARNING * Large Picture files * Dail-up folks may not want to view!
FWIW
Jim
WB2FCN
- Original Message -
From: david
Rick, there is a Number 3 vernier, along with 9 other varieties on E-bay
under National Vernier.
No affiliation with the sellers, just FWIW
item is at -- 290082212768
Jim
WB2FCN
- Original Message -
From: Rick Brashear [EMAIL PROTECTED]
To: AMRadio@mailman.qth.net
Sent: Monday,
Thanks, I needed a really good laugh! Blew a hole clean
through his wrist! Too Cool!
Jim
WB2FCN
- Original Message -
From: [EMAIL PROTECTED]
To: amradio@mailman.qth.net
Sent: Tuesday, December 19, 2006 3:21 AM
Subject: [AMRadio] No Code Ham
Please, just see the sad humor in this
How the HELL are you? Also Greasy Seasonings there old soldier!
I feel your info will fall on deaf ears at this time of year. I am trying
to be civilized here in Buffalo, but without radios to play with It
Just ain't working, so right now I am doing the Bachelor thing at
work, not bad really. Got
Dog gone thing still isn't working right for the reply button.
Sorry, and Greasy seasonings to all.
Jim
WB2FCN
http://eshop1.chem.buffalo.edu
__
AMRadio mailing list
List Home: http://mailman.qth.net/mailman/listinfo/amradio
Partner
Welll,
A long time ago I tried the DowKey route, After
experiencing the Zorch phenomenon, I went to the
E.F. Johnson TR switch. Mainly for the power handling
capabilities, but also for the small amount of amplification
to the receiver, when in receive mode, the TRswitch RX
output is around 150 -
Greetings fellow listers,
Jim WB2FCN here. To advise you folks that the E-pay
site, has an HT-32 transmitter listed by seller hamstuff4u.
This is a bogus listing, as 1st, the pictures are of MY
HT-32A, which is currently sitting in my storage unit.
This seller has lifted my description from my
I will join in here with Tony, and say this It ain't like that at all!
However I have 1 HT-32 MK1, 2 HT32As and 2 HT32Bs, and I
will sell them each at a cost of 590.00 per unit, pickup only.
As we all are aware, good intentions don't do it, money talks and
B.S. walks! I find it very laudable
The BC-610, does not operate properly, when the front panel
switch is in protect or tune mode, if you are on AM. Bias
voltages change all around as the tune/protect position switches
in a series dropping resistor to the 115 VAC main input.
The manual, says tune in CW mode, using the tune
Well,
I think it is more of a math topic.
As in 20 goes into 63 more times than 63 can go into 20!
YMMV
Jim
WB2FCN
John you just need to go get the 2 20's and prove her wrong
I did that twice and wound up in divorce court twice HI...
My third has never made that statement...God at 63 years
Where are the antennas for all those radios (and Services)
located? Not nit-picking just wondering out loud!
Jim
WB2FCN
Snip-page
all this CB bashing. come on now. there are just as many idiots on 75
meters
as there is on CB. it's just another SERVICE. it has it's amount of jerk
off's as well
Nope, it was enough to get it on 160/80/40 with
no spurs to speak of. I do have a 10 meter mobile rig
in the truck with a whip cut for 29.100 and the rig does
AM/SSB but no CW, a shame really, I'll have to get into
it and make that happen.
If at home I would be using a desk top 4-1000A amplifier
Mark is your BTA-1M working yet, how is that going?
Jim
WB2FCN
- Original Message -
From: Mark K3MSB [EMAIL PROTECTED]
To: List AMradio amradio@mailman.qth.net
Sent: Thursday, March 30, 2006 4:12 PM
Subject: [AMRadio] 10M AM
I'll be monitoring 29.0 from about 4:15 PM to 5:15 PM this
I'll bet you a nickel the bias supply has a problem, the plate supply
for the 2A3s is not normal the plate supply is achieved by putting a
negative voltage on the 2A3s cathode to raise hte plate to 360 volts.
Sounds like the bias supply voltage is off. Check the manual and then
the components
Howdy,
Looking for some shipping assistance from Camp lejuene, need
a pickup truck or rental truck, I will pay for help and time and truck.
Jim
WB2FCN
Ola John,
Yes, by all means, if you can restore it, (to original maybe)!
The things covered 160 to 10 meters, if you got all the RF decks with it.
It did AM as well as cw, the HV power supply for each cabinet was quite
handy.
Having said all that, and reading what you have so far, I would say
Hi All,
I am going to answer the comments but first remove some of the
clutter.
My VFO458 units are stock, as in just like the manual, with changes
says, and I have not experienced this phenomenon at all!
I found MOST of the changes to the Central Electronics version of the
VFO458 by
I would like to jump in here,
I have a converted solid state rig on 20 meters.
It runs an adjusted level output of 100 to 650
watts on that band. It uses a derivative of the MRF-150
only requires 100 milliwatts of drive over the whole band.
The only drawback if you can call it that is this unit is
Humm,
Snippage here
With that VFO, I wonder how much you had to fiddle with it to make the
output tuned circuit track the input tuned circuit? I gave up on mine, and
added a second variable capacitor to tune separately. When operating on 80
meters, turning that 1625 plate tuning capacitor
they are also available for free from the ETM web-site.
http://www.logsa.army.mil/etms/find_etm.cfm
Jim
WB2FCN
- Original Message -
From: Merz Donald S [EMAIL PROTECTED]
To: Discussion of AM Radio amradio@mailman.qth.net; 'Glowbugs (E-mail)
[EMAIL PROTECTED]
Sent: Wednesday, January
Well Mike and group,
The coupler itself doesn't generate TVI! The transmitter that is connected
to
it might, the coupler just pass along the signals that go to it.
The coupler was never intended to , tune a dipole antenna, nor an
open wire fed antenna. It was for a base fed Whip antenna and the
Check the schematic for the BC-610
Jim
WB2FCN
- Original Message -
From: Mike Sawyer [EMAIL PROTECTED]
To: Discussion of AM Radio amradio@mailman.qth.net
Sent: Wednesday, October 26, 2005 9:34 PM
Subject: Re: [AMRadio] BC-610 down=up
The BC-610 has an un-balanced output. Generally,
Actually,
The BC-939 (*) handles an end fed long wire, the recommended length for
2 - 18 Mhz is 44 feet. That number changes to 77 feet for 160 meters and
works quite well. At my Rochester, NY QTH I used four or the 44 ft.
end fed long wires oriented to the cardinal points. the system worked
quite
The ratings are 5500 primary 1.14 KVA, and 5500 secondary
198 Amp DC.
Don,
I don't know what you mean by don't add up! The discussion
was pertaining to the use of this particular transformer, in
conjunction with a specific set of tubes, and RF stage.
What doesn't add up?
Jim
WB2FCN
Donald
Well,
I guess I am still confused, Sigh but I am going to drop the request
clarification, as the clarification seems to be muddled!
Jim
WB2FCN
Donald Chester wrote:
The ratings are 5500 primary 1.14 KVA, and 5500 secondary
198 Amp DC.
Don,
I don't know what you mean by don't add up!
I have that transformer as well, it is in the pair of 805
modulator stage for my HB 304TL rig. The system runs at 1500 VDC
For the plate supply to the modulator and also the RF deck.
I rewired the speech amp to a pair of 2A3s to drive the 805s.
I haven't done an audio sweep to check the range yet
?? There was a page on the internet that said
max current for this beast is 450 ma., so I don't know if that is a
practical and not theoretical conclusion. Thanks for looking.
Paul
- Original Message -
From: James M. Walker [EMAIL PROTECTED]
To: Discussion of AM Radio amradio
Actually, it isn't difficult if you follow the instructions in the BC610
manual. First the tuning unit for 6 - 8 Mhz is used and also the Plate
coil (with swinging link) also 6-8 Mhz. Then disconnect the output leads
from the transmitter. Turn on the filaments, make sure the plate HV is
off set
The BC-610 is neutralized on one band and then it is set
for all bands. Coverage from 2 - 18 mc is setup on 40 meters
then left alone.
However when making the manual mods for 160 meter operation
the neutralizing has to be done for that band only, and it is not
valid for any other band. When going
Good one there Paul, first belly laugh of the morning.
Kool, TNX.
Jim
WB2FCN
- Original Message -
From: VJB [EMAIL PROTECTED]
To: amradio@mailman.qth.net
Sent: Tuesday, August 30, 2005 1:52 PM
Subject: [AMRadio] Inca Transformers
Dave,
Regarding your Inca series Phelps-Dodge
Ah,
Actually, it was 20 - 30 RF volts. Grid drive is around 5 MA. I use mine
with a Pacemaker driver, and a 20 DB ~ pad inline and the connecting
coax
is prescribed to be 60 inches long to prevent parasitics.
The thunderbolt can also be driven directly by an (un)modified Central
Electronics 20A,
yep,
that is the one, ran AM CW and RTTY with it for over five years after
it was finished. The tube lasted quite well and I still have it here
as a test tube for the T-368s I end up working on.
The circuit lends itself to using the 4-250 as well the neutralizing
will
need to be adjusted however.
Ah a few additional comments and corrections please.
Merz Donald S wrote:
Comments about the user's use of the Matchbox are summarized as:
1. It's a balanced tuner. Running it with an unbalanced output from a
transceiver could be unpredictable.
The input to the MatchBox can be 50 or 75
Well,
IMHO that all the talk indicates that the ARRL is not representing the
majority of the currently licensed folks. In that case it would seem
that
all that should be required is for folks to notify the FCC independently
(make that individually) that they don't want changes made that are
being
Hi Charlie,
Jim WB2FCN here, anymore Scientific Radio Equipment in the auction? I am
still looking for items to complete my system. Info help is appreciated.
Thanks.
Oh, yes it is still snowing up here, Hi Hi.
Tks es 73
Jim
WB2FCN
charles free wrote:
Thought I would throw this out there as
look bad. AM
radio on Friday nights in the Northeast sometimes tends to bring on
operators who have forgotten to engage their brain cells.
Pete, wa2cwa
On Fri, 18 Mar 2005 22:33:17 -0500 James M. Walker
[EMAIL PROTECTED] writes:
Greetings,
I have a question, about 80 meter night-time
Greetings,
I have a question, about 80 meter night-time operation. Specifically on
this evening, as it seems there is a ducting effect or some such
condition
happening in the way of propagation. I have noticed it happens only on
friday evenings and apparently only to my signal.
Example I
Direct Digital Synthesis. Be advised, some of these generate
spurs, depends on the manufacturer.
Jim
WB2FCN
- Original Message -
From: Jim candela [EMAIL PROTECTED]
To: Discussion of AM Radio amradio@mailman.qth.net
Sent: Monday, March 14, 2005 12:34 AM
Subject: RE: [AMRadio] need help
, March 14, 2005 11:14 AM
Subject: Re: [AMRadio] need help with tranmitter design
Thanks, Jim. They are out of my price range anyway.
73, Ed Richards K6UUZ
AMI member #1534
On Mon, 14 Mar 2005 07:19:49 -0500 James M. Walker
[EMAIL PROTECTED] writes:
Direct Digital Synthesis. Be advised
operation. Your mileage may vary.
- Original Message -
From: James M. Walker [EMAIL PROTECTED]
To: Discussion of AM Radio amradio@mailman.qth.net
Sent: Thursday, January 13, 2005 11:48 AM
Subject: Re: [AMRadio] AM Amps
Hum,
4-1000A G.G. amplifier, 3000 VDC plate
Well sports fans,
I am at home now and have the Radio Handbook info if you are still
trying to figure out what the rig actually looks like. Also if you have
the handbook it is the Fourteenth Edition dated 1956. The page number is
580, and the article is titled A 4-1000A Pi-Network Amplifier. The
That would be the SB-610 Monitor scope! I have two HO-10s and one
SB-610 monitor scope, but I also have and use on the work bench the
TEK 502 scope 53XX Dual trace good to 50 Mhz. You definitely need
scopes for the audio stuff!
Jim
WB2FCN
Radio - Long may it Wave
- Original Message -
Hum,
4-1000A G.G. amplifier, 3000 VDC plate, 700 MA Plate I, 500 MA
Grid I, with 125 Watts out of DX-100 running apprx 2100 W input and
dissipating 670 watts plate = approximately 1430 watts output!
While the carrier level into 50 ohm dummy load is 1400 watts measured
and a really NICE orange
That's a rhetorical question right?
Jim
WB2FCN
Gary Schafer wrote:
How do you reduce the drive for AM? I take it that is how you operate CW?
73
Gary K4FMX
James M. Walker wrote:
Hum,
4-1000A G.G. amplifier, 3000 VDC plate, 700 MA Plate I, 500 MA
Grid I, with 125 Watts out of DX
Mark,
As for my ideas, NOTHING is absolutely perfect in radio or anything
else.
Having said that, I think that with a judicious cross section of ideas
the units you describe could be resurrected in a reasonable way, to A)
get them back into operation, and B) convert them to usable range for
160
Mark,
Do you have any photos of the rf section, and are they tube type or
solid state? I may be able to offer some suggestions if I could see what
you have to work with. What types of tubes, power devices are in them? I
have modified several different types of equipment (military
commercial)
and
Well,
You could go to Harbor freight and buy their high end digital voltmeter,
which does
AC and DC volts, measures inductance, and capacitance as well as resistance
for
39.95. Then buy the Fluke RF-80 probe for around the same cost and there you
have a
fully functional test device.
Jim
WB2FCN
Hi Bill and List,
A couple of quick questions. First are all the mixer crystals in the
unit
and the correct frequency? Note, if the crystals are in check to see
that
they are oscillating. If not first check the sockets they plug into,
also
for corrosion on the pins of the crystals. Also what is
Ronnie,
I run a 722/720/730 combo on 40 meters. Been using the 722 for about 4
years now. A question, do you have the full manual for the 722, it might
shed so light on the dial problem. As for stability, mine is very stable
after a ten minute warm-up, if I am going to use the rig I turn it on
Try the 1964 series, and also the 1964 ARRL handbook.
Jim
WB2FCN
- Original Message -
From: Merz Donald S [EMAIL PROTECTED]
To: 'Amradio (E-mail) amradio@mailman.qth.net; 'Glowbugs (E-mail)
[EMAIL PROTECTED]
Sent: Thursday, August 12, 2004 10:16 AM
Subject: [AMRadio] Original T.O. Keyer
Maybe.
but New York State is probably the only state, that you can dial 911 and
be put on hold!
Jim
WB2FCN
[EMAIL PROTECTED] wrote:
There are some definate concerns of having GPS on cell phones, but consider
these 2 scenarios
Your wife gets carjacked and gets tossed in the trunk or
Gary, Change the 5V4 rectifier in the DX-100 and see if that doesn't
help
I was seeing the same thing, and it turned out to be a gassy 5V4.
Jim
WB2FCN
http://eshop1.chem.buffalo.edu Netscape 7.0+ Exploder 5.0 +
Gary Poland wrote:
Jim,
My first experience with the DX-100...looking at it
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Behalf Of James M. Walker
Sent: Friday, July 16, 2004 10:52 PM
To: Discussion of AM Radio
Subject: Re: [AMRadio] dds information
Well Gang,
I have several PTS signal sources here, and they provide coverage over a
wide range
Well Kim,
I am not sure I understand what is is you are planning to do here. Write
a story is one thing, but why the desire to move a transmitter to 20
meter
operation?
If it is just for the pleasure of doing it, for a soldier in WWII, I
think
there would not be much call for that sort of thing.
Actually the SCR-299/399 was a portable rig. You just couldn't run up a hill
with it, or ford a stream. Portable being defined as able to move and setup
in
a semi-permanent facility. The carrying cases for the SCR-399 held the
receivers
a small desk, headphones, microphones, coils sets, spare tube
Ola,
Que Pasa, como Esta, Mi Amigo.
Sgt Boo
- Original Message -
From: Rbethman [EMAIL PROTECTED]
To: amradio@mailman.qth.net
Sent: Sunday, April 25, 2004 6:15 PM
Subject: [AMRadio] Documentation needed - R-266/URR-13 Radio receiver
Subject says it all.
Any electronic form of the
Ah,
That's as follows:
304TL filament 5 VAC @ 25 amps or 10 VAC @ 12.5 amps
amp factor (avg) 12
freq for max ratings 40 Mhz
Jim
WB2FCN
single 304TL modulated by Pair 805 triodes 80 - 10 meters
Geoff/W5OMR wrote:
Well, I build to match my tubes, not because it is efficient or
Same units, and still looking for an unwary buyer.
Jim
WB2FCN
Damon S Raphael MD (W7MD) wrote:
Note the seller.
- Original Message -
From: Dino Darling [EMAIL PROTECTED]
To: amradio@mailman.qth.net
Sent: Thursday, December 04, 2003 10:00 AM
Subject: [AMRadio] Johnson KW Desk!
Hello Fellow AMers,
Offered for sale is this UTC CVM-5, 600 watt Modulation transformer.
Asking 350.00 plus shipping, approximate weight for shipping is 75 lbs.
Specs for this Multi-Match transformer can be found on the AM Window
tech pages, under modulation transformers, including hook-up wiring.
Ah, Ron,
The Thunderbolt does NOT require 20 watts unless there is something
really
wrong with it. I have and use two one is driven by a Central Electronics
10B with about 2.5 watts out in AM mode for over 300 watts carrier from
the Thunderbolt. In CW mode I usually run about 6 watts into the
Hello,
Jim WB2FCN here.
What you describe sounds like either of two things, in order to point
you in the right direction. first let me say the bias supply, not only
provides bias to the 250th but also to the grids of the 100th tubes and
also to the 807s. This may sound strange but it works this
My 458VFO runs from 160 through 10 with low output on 10 meters.
Actually
the doubling schemes seems to be questionable! I intend to build the
10 add-on from the bama site and try that for 10 meter am.
I have 2 of the 458VFO units both are working in the same manner, (low
10
meter output). My
Hello fellow listers,
I am trying to find a picture of the Micro Match antenna
tuner, anyone seen one or have a picture?
Thanks in advance.
Jim
WB2FCN
http://eshop1.chem.buffalo.edu
sorry for the bandwidth, I hit the reply key by mistake,
Mia Culpa, Mia Culpa
Jim
rbethman wrote:
All,
I have two AN/URR13As. They have a LOT of tubes marked 5003.
1) Is there a known substitute for this tube?
2) I have a Hickok KS-15560-L1 Tube Tester. Are there updates
Hi Ken,
Yep, They are a good little rig! I have one in operation, along with a
10B
and several 20A rigs. The manual for the unit is available at the BAMA
site under central electronics. Check your unit out for the QT-1 and
also
the ones I have seemed to come with only 80-40-20 meter coil sets. The
Hi Jim,
yes for the 813 in AB1, around 65 watts maximum out, I use the CE10B as
driver and frequency control. the 813 is in class C now and modulated
by a pair of 811A using the Kenyon 125 watt modulator transformer for
the 813
class B modulator to single 813. Works better.
Also yes on 10 meters,
Hi Jim,
I run several 10A, 10B, and 20A combinations here at WB2FCN. For past
two
weeks been running the 20A/10B at different times, and driving a Johnson
Thunderbolt.
My 20A is back in original form according to the manual. Took a little
coaxing to get things back to normal in the unit. My
Hello,
I have available a 1052 foot roll of ANDREW HJ8-50B
3 inch heliax. New unused, asking price is 15.00 per
foot. Serious interested parties only thanks. Email for
photo of cable in shipping container. Shipping weight
2,160 pounds Tare weight. Thanks for reading.
Jim
WB2FCN
98 matches
Mail list logo
