Kit Central News

5/23/22

Still occasionally adding schematics, block diagrams & stuff as I find them. I updated the Heathkit Parts List (see Where Used on Heathkit top page). Anybody use this? I was thinking it might be useful to include datasheets for devices. Anyone agree? Still haven't updated from HTML4 to 5 and I'm not sure it's necessary. I have on occasion viewed this site on my iPhone 7 Plus. Seems to work ok. I know some find this site useful because I can see the hit counter growing. That growth has slowed substantially but that's to be expected. I don't do anything to promote the site. I'll keep this thing up until it no longer is of value to anyone. Here is what has happened to the yearly hit count totals (peak in 2018):

1/2/21

Been a long time since any significant updates although I have quietly added schematics or block diagrams on occasion. Work has been a major distraction. I came into some catalogs and thought it would be interesting to include original prices just for nostalgic sake. I'm open for any ideas on what to add. This site was written in HTML4.0. I haven't updated it to HTML 5 or responsive design. Is this a problem for any of you folks that use this site? I'm not selling anything and I don't care about SEO so I haven't given much thought to a major update. As long as the available info can be found and viewed with reasonable ease, I'm happy. Any feedback/thoughts? Oh yeah - happy new year!

7/18/20

Added Conar 221, 320, M-1400, 452, 9AD and 683 pictures.

9/15/19

Added an alphabetic list of Heathkits. Should help when you have a model number but don't know what it is.

8/11/19

Added 1 Dynaco picture.

7/23/19

Added sub catagories on the Heathkit top page. I'll also be doing this for Eico and Allied. It may look like not much has been done but over the last year or so I've done a lot of work on schematics. I just didn't mention it here. I will be adding more material in the near future as time permits. Retirement is still a ways off and I am a care giver for my wife so time is precious.

1/26/17

Added 1 EMC schematic.

11/19/16

Added 1 Paco picture.

10/6/16

Added 1 Heathkit ham schematic.

9/25/16

Added 2 Heathkit audio pictures.

9/22/16

Added 3 Heathkit audio items.

9/5/16

Added 5 Eico test schematics.

9/3/16

Added 1 Allied test schematic and 1 Eico test picture.

8/28/16

Added 1 Allied radio schematic.

8/27/16

Added 1 Eico test schematic.

8/24/16

Added 1 Eico test block diagram.

8/16/16

Added 1 Heathkit audio block diagram.

8/15/16

Added 1 Heathkit radio block diagram.

8/7/16

Added 1 Heathkit misc schematic.

8/6/16

Added 2 Heathkit test schematics.

8/2/16

Added 3 Heathkit ham schematics.

7/27/16

Added 1 vendor in parts and modern kits.

7/26/16

Added 1 Heathkit ham schematic.

7/18/16

Added 1 Heathkit audio schematic.

7/17/16

Added 2 Heathkit audio items and 2 schematics.

7/13/16

Added 1 Heathkit schematic.

7/3/16

Added 2 Heathkit schematics.

7/3/16

Added 3 Heathkit computer items and 1 misc.

6/26/16

Added 22 Heathkit items (15 catalog cover images, 2 test, 2 TV, 3 misc).

5/29/16

Added 6 Conar pictures and 5 Conar catalog pictures. It may seem like not much has been added to this website since the last entry but in fact I have been adding many schematics, block diagrams and some higher quality pictures. I just didn't itemize them here. Although not complete, it is getting harder to find material on many remaining items as they are somewhat obscure. Contributions & leads are welcome.

9/1/14

Added pics of a Paco SA-40 & a G-30. Added EMC 209, 211 & 215 tube testers and a 212 transistor tester. Added the Alled SX-190 receiver.

8/18/14

It's been a while since I updated this page. Regardless, many updates have been added to the site. This is especially true of schematics which has been my focus for some time. Perhaps you've noticed that most of the schematics on this website are clean (no dots, blotches or squiggly wandering lines). Anyway, a few days ago I received an email that pointed out the lack of an entry for the GR-25 TV. Well TV's were of a low interest for me so I just never seemed to get around to them. This is true also for Heathkit computer products and robot stuff. Thanks to the emailers slight nudge, I decided to add TV and computer sections. Robots will have to be patient for their own section. LMK if I got something wrong. Anyone out there reading this stuff?

8/29/12

Added 6 Heathkit calibration docs and 5 specs docs. Although entries on this page have been few lately, I have added many schematics over the year. I just didn't mention it here. Hope this site is useful.

12/2/11

Added block diagrams. Right now, I have some for Heathkit. I'll add more as I can find them.

8/4/11

I have added a list of Allied Knight-Kit articles that can be found in 73 magazine (also from Steve KB9MWR's excellent index).

8/3/11

I have added lists of Heath and Eico articles that can be found in 73 magazine. The info was extracted from Steve KB9MWR's excellent index. Click the Magazine Articles button on the Heathkit page. Although it may appear that few updates have been made this year, many schematics have been added. I have not made note of these on this page.

4/5/11

I have added a page under General Info that presents a list of sources of information on schematics and electronic circuits. Many entries are ones I have used over the years. If any of you have additions or corrections for the page, I'll get them on there.

11/26/10

I have added a section covering restoration of SB-10x transceivers. Right now, it focuses on the SB-102 because that's what I'm currently working on. Soon I'll be working on an SB-100. Although I have never owned an HW-10x, I suspect this info is somewhat applicable to them. As always, corrections and additions are welcome. You can find this section by going to the Heathkit page and clicking the Features button. I hope this material helps others get their SBs up and working.

8/9/10

I am in the process of converting the schematics over to PDF format. This will save a little server disk space. To my surprise, the PDF files are significantly smaller than the GIF files. Years ago, Acrobat Reader was not on every PC like it probably is now. For the smaller schematics, I'm setting the paper size to Legal and for larger ones, I'm using A0-A2. This should give you a relatively clean large copy if you want to print something on larger size paper. They should print fine on standard Letter size paper. Holler if there are any problems.

6/14/10

Added 20 Heathkit items (1 test, 4 audio, 15 misc).

6/3/10

Added 18 Heathkit test specifications.

5/11/10

Added 5 Heathkit test calibration docs.

5/4/10

Added Electric Radio article listings and information for Heathkit, Allied, Eico, Stancor and Conar.

3/20/10

Added 9 Heathkit calibration docs.

2/28/10

Added 9 Heathkit specifications.

1/1/10

Added 12 Heathkit items (6 ham, 2 test, 2 radio, 2 audio).

12/10/09

Added 5 Eico items (1 ham, 2 test, 1 radio, 1 audio).

11/29/09

Added 18 Heathkit items (4 radio, 3 test, 5 audio, 6 catalogs) and a bunch of specs.

11/19/09

Added Calibration instructions for 29 Heathkit items (26 test, 3 misc).

9/19/09

Added 5 Heathkit items (2 audio, 2 radio, 1 misc) and 3 Conar items (test).

9/16/09

Added 5 Eico items (3 audio, 2 catalogs), 1 Paco item (test) and some schematics.

8/21/09

Added 2 Conar items (1 misc, 1 test).

8/9/09

Added material to the Heathkit parts lists.

7/28/09

Added 10 Heathkit items (1 ham, 5 audio, 3 misc, 1 radio).

7/26/09

Added 26 Heathkit items (5 ham, 9 test, 4 audio, 3 misc, 5 radio) and 3 Eico items (2 test, 1 audio).

6/29/09

Added 10 Conar items (1 ham, 9 test) and 2 Eico items (1 radio, 1 audio).

5/24/09

Added 10 Heathkit items (1 ham, 2 test, 3 audio, 4 misc) and several schematics, 1 Conar item (test) .

5/11/09

Added 2 Heathkit ham items and several schematics. By now the Heath master parts list is getting large enough to be useful - I hope.

4/12/09

Added popup display of lamps on Lamp Data page. Just place cursor over Lamp No. and an actual image of the lamp should appear. The images of the lamps are copyrighted and used with permission of elightbulbs.com.

4/6/09

Added 31 Heathkit items (6 radio, 25 misc).

4/5/09

Added 15 Heathkit items (audio).

3/10/09

I have been adding to the Heathkit master parts list almost daily since creating the list on 11/30.

1/4/09

Added an Eico master parts list.

11/30/08

Added a Heathkit master parts list. Click on the Where Used button.

10/26/08

Added CONAR. I just learned a little about this company and some of its products. As I get more info, I'll update the pages.

9/24/08

Added 29 Heathkit items (2 ham, 8 test, 1 radio, 8 misc, 10 audio).

8/30/08

Added 2 Heathkit schematics.

8/23/08

Changed the format of the Heathkit top page. I hope the changes make it a little easier to navigate. Let me know if you find any problems.

8/19/08

Added 28 Heathkit items (1 ham, 9 test, 6 radio, 7 misc, 5 audio).

8/17/08

Added 3 Heathkit schematics and 1 Eico schematic.

8/7/08

Added some software to adjust size of font on a page for folks who have vision issues. Just click on one of the 3 little "A" icons to select a size.

8/4/08

Added additional lamp info and a tube vendor in General Info section.

7/28/08

Added 9 Heathkit schematics and 4 Allied schematics.

7/8/08

Added 2 Heathkit schematics and 4 Eico schematics.

6/1/08

Added 22 Heathkit specs docs and 2 schematics.

5/30/08

Added 7 Heathkit schematics.

3/23/08

Been a long time since any updates. Career and broken computer have been the primary causes. Added 5 Heathkit items (1 ham, 2 test, 1 audio and 1 misc). The Tube Interchangability Reference has been updated with a lot of data including a new section for tubes with a letter prefix.

12/5/07

Added 5 Paco items (3 test, 2 audio).

8/19/07

Added 33 Allied items (2 ham, 17 test, 8 radio, 5 misc and 1 catalog). Added Ham Radio Magazine Heath index.

2/15/07

Moved to new domain

7/26/06

Added 22 Heathkit items (17 specs and 5 products)

7/15/06

Added 2 Paco pictures and some Heath schematics

6/10/06

Added 20 Heathkit items (4 ham, 8 test, 2 radio, 6 misc)

6/8/06

Added over 20 schematics over last month mostly to Heathkit

5/25/06

Added product links in Heath transformer cross reference.

4/23/06

Looks like I made a little mistake. I announced on 1/19/96 that I had added Dynaco to this site. I did all the work but never pushed it to the server! The mistake has been fixed. In addition, I have added yet another kit manufacturer - Stancor. This is literally a company before my time so my knowledge of them is very lacking. Any help in adding to the information presented here will be eagerly accepted. Thanks to Dave W1TDD for originally suggesting Stancor back in early 2003. My apologies for taking so long to get it done.

4/11/06

Added 24 Heathkit items (2 ham, 4 audio, 11 test, 1 radio, 6 misc) and a bunch of schematics

2/5/06

Added 5 Allied items

1/19/06

Added Dynaco. For some reason, I just never thought to cover this excellent kit provider

1/17/06

Added Z Communications to Heathkit Resources. Added some Heath modification links

1/2/06

Added 2 Paco audio items

11/22/05

Added a sitemap. The site layout & navigation is simple on purpose but maybe this will help someone. Added 21 Heathkit items (13 ham, 8 misc)

9/13/05

Added more listings to the modern kits page. Added page listing Sources of Electronic, Mechanical and Surplus Parts

9/10/05

Added Heathkit transformer where-used table

8/10/05

Reorganized the Heathkit Resources and Matrix pages to be easier to navigate (I hope). Added list of current sources of electronic kits under General Info. Other minor cosmetic changes. Anybody reading this stuff?

7/24/05

Added 10 Heathkit items (9 test, 1 ham)

7/15/05

Added 17 Heathkit items (1 ham, 12 test, 2 audio, 2 catalog)

6/19/05

Added SB10x dial string info. Sorry about the long lapse in updates. Work & family have consumed much of my time.

11/25/04

Added 14 Heathkit items (3 ham, 9 audio, 2 radio)

9/4/04

Added 10 Heathkit items (2 ham, 3 test, 4 audio, 1 misc)

9/1/04

Added documentation on how to use extended coils with the GD-1B

8/23/04

Added SBM-102 bulletin (see Heathkit page)

7/30/04

Added Tube Interchangability Reference material for 6 prefix tubes

7/27/04

Added Tube Interchangability Reference material for 12 prefix tubes

7/24/04

Added a Tube Interchangability Reference under General Info. Many tubes are getting a bit hard to find. I hope this will provide a little help getting something to work. Right now, the data for 6 and 12 prefix tubes is still under construction. Please report any errors or additions.

7/18/04

Added 13 Heathkit specification items (12 test, 1 misc)

6/26/04

Added 13 Eico items (1 ham, 1 audio, 9 test, 1 radio, 1 misc)

6/25/04

Added info on optimizations to HW101 and SB10x Heathkit. See Mods section of Heathkit

5/30/04

Added 12 Heathkit items (ham/test/audio/misc/catalogs)

5/19/04

Added Eico 723 schematic

5/13/04

Added Eico catalog and Knight CPO schematic

4/9/04

Added 2 Paco audio items

4/7/04

Added 3 Paco audio items

2/24/04

Added 17 Heath items - 5 test, 5 audio, 5 catalogs, 2 ham

1/3/04

Added 15 items - 2 Heath items (test), 13 Allied items (5 test, 3 radio, 1 ham, 3 catalogs, 1 misc)

12/15/03

Added 9 items - 6 Heath items (2 ham, 3 test, 1 catalog), 1 Precise item (test) and 2 Eico items (test)

10/25/03

Added 25 Heath items (6 ham, 4 test, 1 radio, 8 misc, 6 catalogs)

10/17/03

Added 12 Heath items (2 ham, 5 test, 2 audio, 3 misc)

9/17/03

Added 9 Heath ham items

9/1/03

Added Heath SB-102 schematic

8/25/03

Added 13 Heath items (audio/test/ham/radio/misc)

8/16/03

Added info on DC meter formulas to general info. Added a couple of Paco items. Added 17 Heath items (audio/test/ham/radio/misc)

8/5/03

Reformatted the EMC, Precise and PACO pages so that additional info could be added (documentation source). Added some Eico test items

7/25/03

Added 1 Heath test item and put schematic links in matrix

7/13/03

Added 16 Heath catalogs

7/10/03

Added a Heath EUW-16 schematic. Made some Heath test corrections

6/26/03

Added 27 more Heathkit items (radio/test/catalog)

6/20/03

Added 4 more Allied items (radio/test/catalog), 5 Eico items (ham/test/audio) and 2 Paco items

6/19/03

Added 5 more Heathkit items in radio, test & misc catagories

6/15/03

Added 29 more Heathkit items in all catagories

6/11/03

Added Eico ST-3120 tuner. Corrected sort order and dates for Heathkit ham item model numbers

5/19/03

Added the General Info page. As I find useful info that may not be readily available elsewhere, I'll place it here. I promise to keep it somehow related to the kits and their care and feeding

4/27/03

Added 10 more Heathkit ham, test & misc items

4/20/03

Went on a business trip to China. Came back & got sick. Thought it was SARS but it was "just" pneumonia. Anyway, I fixed a problem with a missing Heath service bulletin (GH1-10). While I was at it, I cleaned up the formatting of all the Heath service bulletins and test equipment spec files. More kits to come.

2/25/03

Added 4 more Paco items and 1 EMC item.

2/24/03

Added 8 more Heathkit ham, & misc items.

2/16/03

Removed the Guestbook. Looks like the provider folded like a cheap deck of cards.

2/15/03

Added 26 more Heathkit ham, audio, radio, test & misc items.

2/9/03

Fixed error in Heathkit page that listed an SB-200 circuit improvements doc. It actually is an SB-220 doc. Thanks to Paul - VA7NT.

2/3/03

Added Hammond Mfg. as a possible Heathkit parts resource.

2/1/03

Added information about the availability of Chuck Penson's Heathkit book (see Heathkit Resources).

1/17/03

Added more Heathkit ham, audio, radio, & misc items. Cleaned up formats on Heath QST modifications, bibliography and reviews documents. Added some Heathkit Resources. Added link to Heathkit Bluebook on Heathkit top page. Added Knight Kit manual resource.

1/6/03

Added more Heathkit test, ham, audio, radio and misc items. Corrected some errors.

1/4/03

Added some Heathkit test and misc items.

12/30/02

Added some images & a schematic on the Precise page.

12/28/02

Added some Eico audio & test items. Also added a few things in Paco, Precise and EMC. Moved the main page introduction material to its own page.

12/27/02

Added a Documentation column to many tables. The purpose of the column is to point to a location where documentation (schematic, theory, how to use, etc.) can be found. Right now this is (BAMA) (Boat Anchor Manual Archive). If there are other sources for freely downloadable documentation, let me know and I'll include them.

12/26/02

Added some Heathkit ham, test, audio and misc items.

12/18/02

Added Heathkit VL2280 in ham section.

12/13/02

Added some Heathkit ham, test, misc and catalog items.

12/7/02

Added some Heathkit ham, test, audio, radio and catalog items. Added some stuff to the submitting page.

12/6/02

Added some Eico test, audio and radio items.

12/4/02

Added more Heathkit ham, test, misc and catalog items.

12/3/02

Added more Heathkit audio and misc items.

12/1/02

Made corrections & added some images to Heathkit items.

11/30/02

Added a bunch more Heathkit items.

11/28/02

Added more PACO items.

11/25/02

Added PACO items.

11/23/02

Added Allied and Eico specs. Added the PACO section.

11-21-02

Added catalogs in Eico and Allied. Added test equipment in Heath.

11-12-02

Fixed bug that prevented access to Heath Service Bulletins.

11-11-02

Added Heathkit JK-18 lab.

11-9-02

Added a manual resource in Heathkit section.

11-7-02

Added a catalog in Allied section.

11-1-02

Added some pictures in Heath audio, test and misc catagories.

10-31-02

Added some pictures in Heath ham, test and misc catagories.

10-30-02

After a bit of a drought, this site has been passed on to Ken KB7RGG. In the process, the Heathkit Matrix site has been merged with the Boatanchor Kit Information site. This means the site now covers Heathkit, Allied Radio Knight Kits, EICO, EMC and Precise kits. The news notes below are carried over from Dale's site.

---

04-10-99

Finaly found some time to update the page! Added lots of pictures to the matrix, some schematics, and updated the HW-8 Page.
Thanks to all who have sent me information. Sorry I did not get it posted sooner.

02-09-99

It has been a long time for an update on the page. Don't know where all the time has gone, and have been busy with other projects! The list server archives are still broke, and I don't know when I will have time in the real near future to fix them. I have updated some of the pages with information that people have sent me. Will get all the new pictures up as soon as I have time.
Added HW-8 digital display mod from Steve Ray K4JPN.
Updated information on the resources page.

12-14-98

Updated the Ham Gear matrix with pictures and data from NA9RB and others.

12-12-98

Added some more mods for the HW-101 sent in by Steve Ray K4JPN
Added featured page for the HW-9/HW-7 and HW-8 Coming soon
Have lots of pictures to be added to the matrix, will try to get to them this week.
Thanks to all of you that have sent me stuff. Sorry for not getting things updated every week.
Things have been a little hectic at work, and on some other projects around here.
The Search tool in the archives is broke. I am waiting for a new fractional T1 to be installed.
A new server is ready and the archives will be moved there.

11-23-98

Added HW-101 Mods collection sent to me from Steve Ray K4JPN  ex K1VKW. Thanks Steve!

10-30-98

Added new pictures.

10-29-98

Added ms-word versions of service bulletins sent in by Joe Lutz - Thanks Joe!
New Heathkit QRP section coming soon. Lots of info on the HW-7/8/9.

10-12-98

Added more mods to the page, some schematics.

10-11-98

Added help page.
Added links to other Heathkit sites, and some more MODS.

10-10-98

Fixed some broken links.
Added schematics sent in from N9MHT-Bill Cohn for the:
AC-1 Antenna Coupler
AM-1 Antenna Impedance Meter
AR-2 Shortwave Radio Receiver
AT-1 CW Transmitter
VF-1 VFO
DX-100 100 watt CW/Phone Transmitter
Pictures and specifications are also included, and they are being put in the product matrix.
Thanks much Bill, and I am told there are more on the way!
Broke the Product Matrix into smaller sections by catagory. It had gotten too big and took too long to load.
Reformated some of the main page to clean it up a bit.

10-3-98

Still having problems with the MS-Word Documents. I added some simple links to the document.
Thanks Joe for letting me know about the problem. Seems to work here just fine, but from other
systems it does not.
Updated some general stuff on the page!

I will not be traveling as much as I have so if you have stuff to send in I will be able to get it onto the
page a little faster.

9-12-98

Fixed (Worked around) problem with MS-Word Versions of the service bulletins.
Added pictures to the matrix.
Updated the resources page.

8-8-98

Updated HW-101 Service bulletins for the HW-101 received from Joe for the HW-101.
Later that same day: Added a bunch ot pictures to the matrix from kb7rgg.

8-1-98

Added Pictures to matrix.

7-25-98

Added schematic of hn-31 sent in by Ken kb7rgg.

7-14-98

Added local copies of the heathkit list server at Tempe to the page with a search engine, Still needs some work
But I thought I would put it up anyway!

7-13-98

Added Schematics for HA-14 Kompac Kilowatt and HP-24 Power Supply from Ray A. Allen W2KBR/3.
Added Schematic for HP-1144 from Rob Frohne.
Thanks guy's.

7-12-98

Added some more schematics (thanks for all the good comments about this feature!)
Added a script sent to me from Dave AI7R to subscribe to the Heathlist at Tempe. Thanks Dave!

7-11-98

Added Some Heathkit Product Reviews.
Fixed the FTP Button which was not working!
Added Schematic Section.

7-10-98

Added some HW-8 mods.
Added the SB-1000 to 6 meter mod by John Wilcox  NS1Z - Thanks John!

7-1-98

Added extensive HW-9 Modification files from Gary L Surrency - Thanks Gary!
Thanks Gary for sharing all this wonderful information with everyone!

6-21-98

Updated Service Bulletins from Joe.
Changed HW-7 Mods to a local copy as the GQRP site is gone (Anyone have the HW-8 and 9 Stuff?)
Added a few pics to matrix.
Added ftp site button.

6-13-98

Added pictures, most from ebay, and new service bulletins from Joe.

5-20-98

Added lots of pictures all stolen off of ebay some text files, and updated the service bulletins.
Changed the Apache Audio Modification to a local copy, as the site that held it went away.

4-28-98

Added Pictures and Text to the Matrix that I received from Ken KB7RGG.

4-13-98

Updated Service Bulletins From Joe.
Updated Matrix with pictures and text.

3-26-98

Updated the Service Bulletins.

3-10-98

Added mod on SB200.SB221 to 10 Meters.

2-21-98

Many updates, almost every page updated.
Added lots to the matrix.

2-8-98

Updated Matrix, Added more Pictures.
Updated Service Bulletins.
Updated Resources Page.

1-27-98

Added HW-8 and HW-9 mods, Added not ham Heathkit Page.

1-24-98

Updated Service Bulletins.

1-10-98

Updated Service Bulletins (Thanks Joe).
Updated Resources Page.
I have not had much time to work on the page. Have been very busy at work,
and with some other projects here at home. There are still some good things
in the works though. Hope everyone had a great Christmas.

12-22-97

Added pictures and data to the matrix.
Added links to Gary K0IMJ's pictures.
Updated software that builds the matrix.

12-13-97

Updated the matrix with some wonderful data that Chuck sent me.
The matrix almost doubled in size,
I am considering breaking it in 3 sections. (Comments?)
Updated the service bulletins sent in by Joe Lutz.

12-2-97

Made some changes to the code for some broken browsers.

12-1-1997

Added Items to the Product Matrix.

11-30-97

Updated the resources page.

11-29-97

Added the WWW-Board to the page.

11-27-97

Fixed problem with IE 3.02 not loading the page.

11-26-97

Fixed Antique Electronic Supply Link Added data to the matrix.

11-25-97

Added buttons to the page for multiple things.
Added News, Submitting, and Credits buttons.
Changed page so that it creates a 2nd window for selected items.

11-24-97

Answered lots of e-mail Added some pictures to the matrix.

11-23-97

Added Heathkit Product Matrix.
Answered lots of e-mail.

11-22-97

Put up the page for the first time. Sent messages to the news servers, and the list servers. Over 500 hits the first day!

E-Mail me at krkaplan@cox.net

Last update: 23 May 2022