Re: [drakelist] TR4-C interface to Ameritron AL-811

2007-12-19 Thread Boyd Van Horn
Garey, I know we need to leave all the finals in on a TR-4 because of the 
series parallel filaments, but could one leave the plate caps off one or two 
tubes to cut the power output instead of using a  power reducing network ? Boyd 
W0BUW

Garey Barrell <[EMAIL PROTECTED]> wrote:  
Garey Barrell made an utterance to the drakelist gang
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There is a set of N.O. contacts on Pins 5 and 8 of the Jones connector 
that close on transmit that can be used to ground the relay in the 
Ameritron. They are rated at 2 A at 250 VAC so no problem handling the 
relay current. If you're using an AC-4 power supply, these contacts are 
wired to the two-pin connector on the side of the AC-4 marked VOX.

The TR-4C expects a negative ALC voltage from the linear. If the 
Ameritron provides this, it will work, but may require some sort of 
level adjustment. The TR-4C has MUCH too much power output to drive a 1 
kW linear. Aside from the fact that the amp is less than one-half 
S-Unit increase in signal strength over the TR-4C, you will need some 
sort of resistive pad between the two to keep from overdriving the 
amp. The TR-4C will put out 200+ watts and the AMP will probably put 
out 500.

73, Garey - K4OAH
Glen Allen, VA

Drake 2-B, 4-B & C-Line Service Supplement CDs




Boyd Van Horn wrote:
> Could someone out there help me with the interface to use between my 
> TR4-C's and the Ameritron AL-811. The ameritron has its own 
> Transmit/Receive relay which uses 12 VDC at a 100 ma when grounded. Is 
> there anyway to use the ALC circuit on the Amp with the Drake ? Boyd 
> W0BUW
> 

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[drakelist] RE: SPR-3 audio...now SPR-4 audio

2007-12-19 Thread Steve Aronson

"Steve Aronson" <[EMAIL PROTECTED]> made an utterance to the drakelist gang
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>Steve Aronson wrote:
> I have an SPR-3 which has lost its audio and the S meter sits on 0.  Any
hints,
> tricks, tips etc on where to start troubleshooting this?

I don't normally reply to my own posts,  but it's an SPR-4, sorry for the
typo.
73  Steve


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Re: [drakelist] R-4 Series Crystal Alternatives

2007-12-19 Thread Jim Pruitt

"Jim Pruitt" <[EMAIL PROTECTED]> made an utterance to the drakelist gang
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Hello Eddy.

I have built 2 of the Steve Hageman "Give that Drake Receiver a New Lease on
Life"  ( http://www.arrl.org/qst/2004/06/hageman.pdf ) projects from the
June 2004 issue of QST and troubleshooting info at
http://www.geocities.com/hagtronics/r4.html and more troubleshooting info at
N0SS site at http://www.n0ss.net/drake_het_osc_xtal_elim_notes.pdf  off of
his page at http://www.n0ss.net/index_general.html .  Tom has an Excel
spreadsheet bill of materials at
http://www.n0ss.net/drake_xtal_elim_proj_parts_list.xls but it has not been
updated since 2005.  The Hageman FS4 clone works well and looks good.  The
cost is a bit high (but what DIY projects are not more expensive than
commercial products these days( (I think mine cost in the neighborhood of
$150 with all new parts and a pc board from Fred at FAR Circuits) and I was
not that impressed with some of the methods used in the design but it is
still a good item and does the job very well.  The part that I did not like
was that the segments were 500khz segments (starting at 12.6mhz for 160
meters).  Why does that matter since most band segments tuned are 500khz,
you ask.  I am in MARS and some of the frequencies fall close to the IF area
where Drake recommends using crystals that start in the middle of the band
segment (when using the T4X series and transceiving).  This is mostly a non
issue now, since MARS outlawed older amateur gear on their frequencies.
Other than that the Hageman FS4 clone is ok.  It does look nice in the MS4
enclosure with the vinyl overlays that Tom Hammond, N0SS had made that
resemble the face of the FS4.  Tom also had ovelays made for a Hammond
enclosure for those that did not want to put it in a MS4.

I also looked very hard at the project at
http://www.jimcom.net/elehobby/r4cdds/index.html  which uses an Analog
Devices AD9850 DDS chip.  The web page is in Japanese (I do not read or
speak Japanese) but the schematic is viewable and the code for the Pic 16F84
is there.

There are other Analog Devices chips that would probably work better like
the DDS_Controllers group project that uses a AD9912 (I think) DDS chip.

You can also cheat and use a signal generator to replace the FS4 (expensive
waste of test gear) or use a vfo if you have one that covers those ranges
that you need.

The DDS signal generators that use the AD9850 series are probably the
easiest and cheapest to come by as there were many scattered across the web.

I personally do not like having to buy a bunch of crystals since
International Crystal is harder to deal with these days and Jan Crystals web
page is hard to use.  I guess Bomar is still in business (correct me if I am
wrong).  It is getting harder to buy crystals from crystal manufacturers (at
least at a reasonable price) because the mass production market has moved to
cpu clock crystals.

The Italian outfit that is making a DDS synthesizer for the Drake twins
makes a good product from what I have gathered on this list but that price
is way out of my budget.

If you are inclined to make one of the DDS sythesizers you might look at the
NJQRP DDS daughtercard at http://www.amqrp.org/kits/dds60/ .  It uses a
AD9851 which is not included with the kit but may still be available
directly from Analog Devices as a free sample (they are really good about
samples of current production chips but samples are not available for chips
that are at the end of their production life).

Trev (now K6ESE) had a DDS pc board available on the QRP-L group for a while
that used an Atmel AT89S8252 cpu.  That project is written up at
http://www.k6ese.com/DDS_Project.htm  but is no longer available but the
schematic as well as the source code are available on his site.

There are many many other web sites that have a AD9850-51-54 series DDS
synthesizer project outlined as well as some newer ones like the
DDS_Controller  Yahoo group.

Craig Johnson, AA0ZZ, and the group hanging out at the DDS-VFO Yahoo group
and are a great bunch of guys.  Craig made the IQ-Pro DDS project for NJQRP
or AMQrp group and now are working on a better version.  Craig's homepage is
at http://home.comcast.net/~aa0zz/aa0zz-main.html so you might look at that.

I do not know if the above helps or just muddies the waters but I hope that
it shows you that there are other alternatives to the FS4.

Good luck.

Jim Pruitt

- Original Message - 
From: EP Swynar
To: [EMAIL PROTECTED]
Sent: Wednesday, December 19, 2007 9:33 AM
Subject: [drakelist] R-4 Series Crystal Alternatives


Good Afternoon All,

I'm curious about the experience of others in the matter of utilizing
possible "...substitutes" for the frequency band oscillator crystals --- be
they synthesizers, self-excited "analog" oscillators, whatever --- in the
R-4 series of receivers, to expand the frequency coverage of same...

To date, my research has come up w

Re: [drakelist] R-4 Series Crystal Alternatives

2007-12-19 Thread Dan Ringer


Dan Ringer <[EMAIL PROTECTED]> made an utterance to the drakelist gang
--
Jim Shorney wrote:

"Jim Shorney" <[EMAIL PROTECTED]> made an utterance to the drakelist gang
--
On Wed, 19 Dec 2007 18:37:37 -0500, Dan Ringer wrote:


BTW, how does one label the crystal switch positions on an R4x?


I used a borrowed (from work) Brother P-Touch labeler with black-on-clear
tape. With careful font style selection, the type looks quite good in small
size. The labels were then trimmed small enough to be applied through the
window in the panel with tweezers. The blank "Normal" position hosts a label
with my callsign.

73

-Jim


Thanks to all for the responses.  I really don't want to take the front 
panel off, because of the well known "Mushroom Effect." (A variation of 
the philosophical proposition that "no good deed goes unpunished," and 
the engineering axiom of "if it ain't broke, don't fix it"). Ok, it's 
not THAT hard, but . . .


Since I have a P-Touch labeler, I'll try it - if I can get the [EMAIL PROTECTED] 
backing off the tape.


Dan, K8WV



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[drakelist] SPR-3 audio

2007-12-19 Thread Steve Aronson

"Steve Aronson" <[EMAIL PROTECTED]> made an utterance to the drakelist gang
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I have an SPR-3 which has lost its audio and the S meter sits on 0.  Any
hints, tricks, tips etc on where to start troubleshooting this?
73  Steve 


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Re: [drakelist] R-4 Series labels

2007-12-19 Thread Gary Poland


"Gary Poland" <[EMAIL PROTECTED]> made an utterance to the drakelist gang
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Dan,
 I have always used a sharp lead pencil to mark the auxilary crystal 
positions.


73, Gary W8PU
http://home.cinci.rr.com/w8pu



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Re: [drakelist] R-4 Series Crystal Alternatives

2007-12-19 Thread Jim Shorney

"Jim Shorney" <[EMAIL PROTECTED]> made an utterance to the drakelist gang
--
On Wed, 19 Dec 2007 18:37:37 -0500, Dan Ringer wrote:

>BTW, how does one label the crystal switch positions on an R4x?

I used a borrowed (from work) Brother P-Touch labeler with black-on-clear
tape. With careful font style selection, the type looks quite good in small
size. The labels were then trimmed small enough to be applied through the
window in the panel with tweezers. The blank "Normal" position hosts a label
with my callsign.

73

-Jim



-- 
Jim Shorney  -->.<--Put complaints in this box
jshorney (at) inebraska.com
Ham Radio NU0C
Lincoln, NE, USA
EN10ps
http://incolor.inetnebr.com/jshorney/


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Re: [drakelist] 2 For 1 Sale

2007-12-19 Thread Jim F.

"Jim F." <[EMAIL PROTECTED]> made an utterance to the drakelist gang
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Hi,
If you can sell the good one, I may be interested in
the one with the bad meter.

Jim / W1FMR

--- BSugarberg <[EMAIL PROTECTED]> wrote:

> 
> BSugarberg <[EMAIL PROTECTED]> made an utterance
> to the drakelist gang
>
--
> Hello,
> 
> I have the following for sale:
> 
> Drake W-4  Wattmeter - Works good, looks good.
> 
> Drake WV-4 Wattmeter - Meter needle stuck about 1/8"
> above zero, looks good.
> 
> $95.00 for both + shipping.
> 
> 73, Bruce WA8TNC
> 
> 
>
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[drakelist] 2 For 1 Sale

2007-12-19 Thread BSugarberg


BSugarberg <[EMAIL PROTECTED]> made an utterance to the drakelist gang
--
Hello,

I have the following for sale:

Drake W-4  Wattmeter - Works good, looks good.

Drake WV-4 Wattmeter - Meter needle stuck about 1/8" above zero, looks good.

$95.00 for both + shipping.

73, Bruce WA8TNC


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Re: [drakelist] R-4 Series Crystal Alternatives

2007-12-19 Thread K9SQG

[EMAIL PROTECTED] made an utterance to the drakelist gang
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A pencil can be used to label the dial for the crystals.
**See AOL's top rated recipes 
(http://food.aol.com/top-rated-recipes?NCID=aoltop000304)

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Re: [drakelist] R-4 Series labels

2007-12-19 Thread Gypsymt34
[EMAIL PROTECTED] (mailto:[EMAIL PROTECTED])  writes:

BTW, how  does one label the crystal switch positions on an R4x? Dan,  K8WV
My daughter (teacher) has a small battery powered label maker that you can  
change the tape and colors on, and change the sizes of print which will just 
fit  the window.  Whether they had a clear so that you could print black on I  
don't know.  With the front panel off, you can use the "norm"  for the  correct 
print mounting angles, but will have to measure from the center  point.
Personally a very thin pencil line trace of the front panel window worked  
better.  Then pull the front panel
Carl Hibbard  WD8NHKon an R4



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Re: [drakelist] R-4 Series Crystal Alternatives

2007-12-19 Thread Dan Ringer


Dan Ringer <[EMAIL PROTECTED]> made an utterance to the drakelist gang
--
EP Swynar wrote:

Hi Hunter,
 
Wow...!
 
That price tag of $450.00 is a more than I'm paying for both of the 
Twins & matching p.s. / speaker...! Hi Hi
 
~73~ Eddy VE3CUI - VE3XZ


A few extra crystals will do it - or if you was a lot of segments, build 
a little box with a rotary switch to hold a lot of crystals.


BTW, how does one label the crystal switch positions on an R4x?

Dan, K8WV


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Re: [drakelist] R-4 Series Crystal Alternatives

2007-12-19 Thread LeeCraner
The FS-4 does inject a bit of noise to the R-4_ receiver as well.  So aux 
crystals are not only cheaper but also quieter.

73
Lee WB6SSW




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Re: [drakelist] R-4 Alternatives

2007-12-19 Thread k9sqg
I've owned FS-4s and they are neat accessories for the shortwave listener, WARC 
band user, etc.? If one is only interested in a limited number of band 
segments, however, it might be more cost effective to populate the rear panel 
with crystals for the bands of interest.? What the FS-4 offers is relatively 
constant accuracy across the bands, while with crystals one might be high, 
another low, and so forth.? And they are indeed becoming collectable along with 
the RV-75, R7A, and several other items.? Enjoy those Drakes! 

And Merry Christmas and Happy New Year to all!









See AOL's top rated recipes and easy ways to stay in shape for winter.



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Re: [drakelist] R-4 Alternatives

2007-12-19 Thread Gypsymt34
 
[EMAIL PROTECTED] writes:

~73~ Eddy VE3CUI - VE3XZ


Welcome to Evans Upay Ebaywhatever the traffic will bear. (RE: the  FS-4)
Carl WD8NHK



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Re: [drakelist] R-4 Series Crystal Alternatives

2007-12-19 Thread EP Swynar
Hi Hunter,

Wow...!

That price tag of $450.00 is a more than I'm paying for both of the Twins & 
matching p.s. / speaker...! Hi Hi

~73~ Eddy VE3CUI - VE3XZ


**


  - Original Message - 
  From: Hunter Ellington 
  To: [EMAIL PROTECTED] 
  Sent: Wednesday, December 19, 2007 1:04 PM
  Subject: RE: [drakelist] R-4 Series Crystal Alternatives


  Keep an eye out for the Drake FS-4 (I think that's the designation).  That is 
the Drake manufactured synthesizer.  It matches the rigs and comes up every 
once in a while on eBay.  They can be somewhat pricey, but very cool.  I want 
to get one some day, and have been watching the prices for a year or so.  They 
tend to bring about $450 or so.  I think there is one listed as we speak/type.  
73 and good luck.  WB9NJB

  R. Hunter Ellington, Esq.
  Shareholder

  Gorrell  Giles PC
  1331 Seventeenth Street, Suite 1000
  Denver, Colorado 80202
  (303) 996-6585 Direct
  (303) 996-2680 Fax
  [EMAIL PROTECTED]





--
  From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of EP Swynar
  Sent: Wednesday, December 19, 2007 10:34 AM
  To: [EMAIL PROTECTED]
  Subject: [drakelist] R-4 Series Crystal Alternatives


  Good Afternoon All,

  I'm curious about the experience of others in the matter of utilizing 
possible "...substitutes" for the frequency band oscillator crystals --- be 
they synthesizers, self-excited "analog" oscillators, whatever --- in the R-4 
series of receivers, to expand the frequency coverage of same...

  To date, my research has come up with three different articles on the 
subject, i.e.:

  --- August 1972 HAM RADIO magazine ("Frequency Synthesizer for the Drake R-4";

  --- May 1981 QST magazine ("General-Coverage Reception with the Drake R-4C", 
and,

  --- June 2004 April QST magazine ("Give that Drake Receiver a New Lease on 
Life").

  Of all these, the May '81 QST appears to be about the simplest to construct, 
even though it uses a pair of the now relatively expensive ECG222 (come 
NTE-222) dual-gate Mosfet transistors...but how in the world does one attain 
(and maintain) solid, stable, & steady crystal-like oscillation in a relatively 
simple Colpitts circuit, as high as 40.8-MHz...?!

  I'm putting out feelers at this time, because in three short days from now, I 
shall be the proud owner of a pair of Drake Twins here...a Christmas present 
that I am presenting to myself, just a few days ahead of THE BIG DAY, Hi Hi.

  Thanks in advance, & my vy

  ~73~ Eddy VE3CUI - VE3XZ

RE: [drakelist] R-4 Series Crystal Alternatives

2007-12-19 Thread Hunter Ellington
Keep an eye out for the Drake FS-4 (I think that's the designation).
That is the Drake manufactured synthesizer.  It matches the rigs and
comes up every once in a while on eBay.  They can be somewhat pricey,
but very cool.  I want to get one some day, and have been watching the
prices for a year or so.  They tend to bring about $450 or so.  I think
there is one listed as we speak/type.  73 and good luck.  WB9NJB
 

R. Hunter Ellington, Esq.
Shareholder

Gorrell  Giles PC
1331 Seventeenth Street, Suite 1000
Denver, Colorado 80202
(303) 996-6585 Direct
(303) 996-2680 Fax
[EMAIL PROTECTED]
 

 



From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
On Behalf Of EP Swynar
Sent: Wednesday, December 19, 2007 10:34 AM
To: [EMAIL PROTECTED]
Subject: [drakelist] R-4 Series Crystal Alternatives


Good Afternoon All,
 
I'm curious about the experience of others in the matter of utilizing
possible "...substitutes" for the frequency band oscillator crystals ---
be they synthesizers, self-excited "analog" oscillators, whatever --- in
the R-4 series of receivers, to expand the frequency coverage of same...
 
To date, my research has come up with three different articles on the
subject, i.e.:
 
--- August 1972 HAM RADIO magazine ("Frequency Synthesizer for the Drake
R-4";
 
--- May 1981 QST magazine ("General-Coverage Reception with the Drake
R-4C", and,
 
--- June 2004 April QST magazine ("Give that Drake Receiver a New Lease
on Life").
 
Of all these, the May '81 QST appears to be about the simplest to
construct, even though it uses a pair of the now relatively expensive
ECG222 (come NTE-222) dual-gate Mosfet transistors...but how in the
world does one attain (and maintain) solid, stable, & steady
crystal-like oscillation in a relatively simple Colpitts circuit, as
high as 40.8-MHz...?!
 
I'm putting out feelers at this time, because in three short days from
now, I shall be the proud owner of a pair of Drake Twins here...a
Christmas present that I am presenting to myself, just a few days ahead
of THE BIG DAY, Hi Hi.
 
Thanks in advance, & my vy
 
~73~ Eddy VE3CUI - VE3XZ


Re: [drakelist] R-4 Series Crystal Alternatives

2007-12-19 Thread k9sqg
Note that a spectrum analyzer should be used to ensure that the scheme used is 
not rich in harmonics, spurious responses, and so forth.


-Original Message-
From: EP Swynar <[EMAIL PROTECTED]>
To: [EMAIL PROTECTED]
Sent: Wed, 19 Dec 2007 12:33 pm
Subject: [drakelist] R-4 Series Crystal Alternatives



Good Afternoon All,

?

I'm curious about the experience of others in the matter of utilizing possible 
"...substitutes" for the frequency band oscillator crystals --- be they 
synthesizers, self-excited "analog" oscillators, whatever --- in the R-4 series 
of receivers, to expand the frequency coverage of same...

?

To date, my research has come up with three different articles on the subject, 
i.e.:

?

--- August 1972 HAM RADIO magazine ("Frequency Synthesizer for the Drake R-4";

?

--- May 1981 QST magazine ("General-Coverage Reception with the Drake R-4C", 
and,

?

--- June 2004 April QST magazine ("Give that Drake Receiver a New Lease on 
Life").

?

Of all these, the May '81 QST appears to be about the simplest to construct, 
even though it uses a pair of the now relatively expensive ECG222 (come 
NTE-222) dual-gate Mosfet transistors...but how in the world does one attain 
(and maintain) solid, stable, & steady crystal-like oscillation in a relatively 
simple Colpitts circuit, as high as 40.8-MHz...?!

?

I'm putting out feelers at this time, because in three short days from now, I 
shall be the proud owner of a pair of Drake Twins here...a Christmas present 
that I am presenting to myself, just a few days ahead of THE BIG DAY, Hi Hi.

?

Thanks in advance, & my vy

?

~73~ Eddy VE3CUI - VE3XZ



More new features than ever.  Check out the new AOL Mail ! - 
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[drakelist] R-4 Series Crystal Alternatives

2007-12-19 Thread EP Swynar
Good Afternoon All,

I'm curious about the experience of others in the matter of utilizing possible 
"...substitutes" for the frequency band oscillator crystals --- be they 
synthesizers, self-excited "analog" oscillators, whatever --- in the R-4 series 
of receivers, to expand the frequency coverage of same...

To date, my research has come up with three different articles on the subject, 
i.e.:

--- August 1972 HAM RADIO magazine ("Frequency Synthesizer for the Drake R-4";

--- May 1981 QST magazine ("General-Coverage Reception with the Drake R-4C", 
and,

--- June 2004 April QST magazine ("Give that Drake Receiver a New Lease on 
Life").

Of all these, the May '81 QST appears to be about the simplest to construct, 
even though it uses a pair of the now relatively expensive ECG222 (come 
NTE-222) dual-gate Mosfet transistors...but how in the world does one attain 
(and maintain) solid, stable, & steady crystal-like oscillation in a relatively 
simple Colpitts circuit, as high as 40.8-MHz...?!

I'm putting out feelers at this time, because in three short days from now, I 
shall be the proud owner of a pair of Drake Twins here...a Christmas present 
that I am presenting to myself, just a few days ahead of THE BIG DAY, Hi Hi.

Thanks in advance, & my vy

~73~ Eddy VE3CUI - VE3XZ