|Table of Contents ..HAM RADIO ARTICLES.. (AND TECH ARTICLES) (my web site: www.earlandrews.com or www.hamelectronics magazine.com mirror sites.)
ALL ARTICLES by myself (Earl Andrews VE3AB).. I am sort of a one man wrecking crew !
o NEW ARTICLE - Sept 4th 2016 (not finished yet - just started) Antique 1940 radio dial restringing of a CGE JK53 or RCA A-20 Globe trotter radio click here article
o NEW ARTICLE August 24th 2016 - Finding a replacement FERRITE CORE for another ham in Germany to fix an Argonaut 509 pictures and tips and info
o NEW ARTICLE: August 20th 2016 - A POTPOURRI of Ten Tec Argonaut tips and questions and answers from Earl VE3AB (this is for the 505 through 515)
o CIRCUIT BOARD rebuilding tips as I rebuild Atlas 210x (NEW 27 April 2016) lots of pictures notes and tips on board work here ooo---ooo
JULY 5 -2014 I had to do a small mechanical repair to my Argonaut 515 tuning rack. Article (new) includes some useful Ten Tec Servicing Tips and links ARTICLE LINK HERE
MAY 23rd 2014 - Working on a very rare rig..the Palomar KACHINA 10 and 6 meter rig- I am documenting my progress..see new article being written LINK HERE
o HW7 a basic repair I did for a fellow (low cost repairs to older solid state gear) see this article - CLICK HERE HW7 REPAIR and EXAMPLE OF MY REPAIR CHARGES- (low) !!
o 505 Argonaut that needed some TLC a driver transistor replaced, finals done, the AF rx audio section worked on 4 pgs Article here ooo--ooo
o Antenna Ideas (3pgs..general antenna ideas/antennas I tried or worked on) for small city lot 3 page article here ooo---ooo
o 509 Argonaut repair- discussed: PTO rebuild, Dg Mosfet front end transistor socket home-made,diode protection cct for receiver front end --- Article here ooo---ooo
o Argonaut 509 and DDS VFO.. a failure!! -- but you are welcome to view the article -- I am going to convert the 509 back to the old PTO after I rebuild..experiment article hr 00--oo
o Argonaut with CA3053 (on tx mixer board) replaced - some screen snapshots of the signals on my spectrum analyser - Article here - ooo---ooo
o An interesting Argonaut repair.. Low Power output (on tx)- turned out to be a bad coupling capacitor to the antenna connector (created alot of problems!) article here oo-o
o Argonaut Circuit Board notes: covers the 515 final PA board and notes concerning control boards and audio AF board -- article click here oo---ooo
o More Argonaut Circuit board notes: regarding the control board and versions there of -- article click here ---ooo--
o new article 2016 ** ARGONAUT REED RELAYS and general notes about REED Relay troubleshooting new article MARCH 1 2016 click here article
o Argosy 525, Ten Tec..this article is not ready yet ooo---ooo I do have some spare tested circuit boards for the Argosy available for sale.. this page of parts here ooo---ooo
o Extender Card notes: pictures and information on making your own using edge connectors and surplus boards ect..FT301, Ft221 and others. click here article
o --> A short follow up article concerning EXTENDER CARDS IN particular some ideas of what to use for Atlas 210x CLICK HERE THIS ARTICLE
o FT101E and the AADE digital Display. This did not work out so well! Article here ooo----oooo
o IC-718 CW filter Installation (not all my radios are older vintage) See this article with lots of pictures and information CLICK HERE LINK
MAY 15th 2015 - Pictures and captions of HOMEBREW HAM RADIO PROJECTS submitted to me for Publishing on my site. Ham radio homebrew and experimentation is -- NOT DEAD
-- I homebrew stuff and so do other hams -- CLICK HERE FOR NEW ARTICLE BEING WRITTEN (work in progress)
o OPTO Electronics -- some of the stuff I sell and work on ie..displays and display parts ----ooo CLICK HERE page ooo---ooo
o REPAIRS.. I repair broken gear I have bought or have had given to me..but I also help out other hams who have older solid state rigs/equipment that need
some TLC -- CLICK HERE note that I only do small repairs now..such as PLUG IN CIRCUIT BOARDS. I dont work on entire radios (unless they are my own)
OR unless it is something simpler design like a Ten Tec Argonaut or qrp rig that just needs a few fixes to get it going again. Im not doing alignments.
o REPAIRS -- I give free advice and can help you out..walking you through some trouble spots in doing your own trouble shooging and repair.
o VINTAGE REPAIR -- a 3 page article with pictures and ideas..featured: an old Sears Silvertone 1930s receiver -- click here article oooo---oooo
o IC290 a rotary encoder repair (used a junkbox rotary encoder) and it worked! an early article I wrote LINK HERE ---
|HAMELECTRONICS MAGAZINE.COM --- HAM RADIO AND ASSOCIATED Electronics Hobby
|o - new antenna up at VE3AB for the winter of 2016/2017 - an inverted L remote tuned and protected well from the elements CLICK HERE NEW ARTICLE
o - ADDING ANOTHER BAND (80 Meters (or 60M)) to the LNR QUAD BAND ANTENNA click here for this interesting article August 2015 --> appended 19-10-2015.
o JULY 15-2015 SMALL 6 FOOT TRANSMITTING LOOP NOW BEING EXPERIMENTED WITH BY VE3AB click here for this interesting article
**o Dec 19th updated: MY CURRENT LNR MODIFIED QUAD BAND ANTENNA (mine is 40 and 20 and 10 just like the EF-40-20-10) only this one does 100 watts.
o PAR (LNR PRECISION now has them) end fed half wave. I built one for 10 meters. - I really like these ants - some of my experiments and trials are in this article
here .. article clik here
o PAR EF 40-20-10 in my backyard..(mounted low initially and tested for Field Day operation)..---swr curves -- article here ooo---ooo
o Butternut HF2V.. my restoration (cleaning up) and I modified my HF2V (several times) this article here ooo---ooo
o Butternut HF2V the main modificaton (with pictures and description) this article here ooo---ooo
o GROUND! - First you get a shovel! - My back yard ground counterpoise and mast support for Verticals (was for my HF2V initially) article here ----oooo------
o JETSTREAM JTV 680 antenna - along with my 2 PAR End Fed antennas a comparision with pictures and information ect article here ooo---ooo
o R7 Vertical Antenna ( a modified R7 for Field Day) some notes on the black box ect -- click here for article ooo----oooo
o MANUALS --- FREE MANUALS --- MANUALS -- pdf files for manuals for older stuff (like the stuff I work on frequently- ie older
Argonauts, Argosy, FT301s ect --clik here FOR MY MANUALS PAGE -
o if you dont see the manual you want listed.. shoot me an email (email@example.com) Earl VE3AB, and I can (perhaps) post a
manual for you. I have some CD ROMs now with manuals on them.
|----> STARTUP PROCEDURE FOR A NEW TO YOU RADIO (ie FT301 or other types) new short article CLICK HERE March 12- 2016
-0-- FT 301 BOOSTER UNIT TEST PROCEDURE/METHOD WITH SCHEMATIC AND NOTES CLICK HERE ARTICLE WRITTEN 20 JULY 2015
-00-- BOARD SWAPPING IMPORTANT NOTES:FT221R AND FT301 and other rigs --(CLICK HERE) in this new page/article article revised July 2015
May 2015- Just a couple of notes about Slug Tuned Inductors (FT301 boards) - broken coil wire - technical notes: Click here for article
APRIL 20th - FT 301 RF circuit boards that I did trouble shooting and repair. GOOD METHODOLOGY (and ideas) for trouble shooting on this page LINK HERE
o FT301 AADE digital Display..This kit I built and installed in my own FT301 and it worked/works very well -- click here this article----ooo---ooo
o FT301 transceiver trouble shooting..(something goes POP) what do I do?? click here this article oooo----oooo
o FT301 Transmit Power is low (a common problem that gets reported to me! - by the way..I give lots of free advice to people!!-- clck here this article ooo---ooo
o FT301 - clarifier was way out of whack..I made some suggestions to the fellow..he wrote me back with a simple solution he came up with! --- article here ooo---
o OCT 20-2014 - FT301 troubleshooting - Power Suddenly drops off - a PHYSICAL BUMP RESTORES IT !! The story here: CLICK HERE FOR THIS ARTICLE
|Below--- potpourri of pictures of my parts and radio stuff and some other pictures as well.
I now have 2 web sites on the go: this one and Netty Electronics
Netty Electronics is www.nettyelectronics.com and it will be the site where I sell parts and other stuff. CLICK HERE NEW SITE
Hamelectronicsmagazine.com will be the magazine -- A FREE ON LINE MAGAZINE COVERING HAM RADIO TOPICS (mostly
technical articles) but there will be other stuff as well as time goes on and I live on. I am retired 61 years old and these are
some of my retirement activities.
|FT301 on the bench. I ONLY FIX MY OWN RADIOS NOW.
That way..if the radio is too expensive and time consuming to
repair or too much of a hassle..I can leave it be or just give up
on it! REPAIRS THAT I DO FOR OTHERS AT $10 AN HOUR are plug
in circuit boards and small repairs.
|Above pictured a healthy undamaged coil (spare part)
which I will use to replace the heat damaged coil form
above pictured right (above).
Pictured right ---> the coil slug associated support rod got
badly damaged when I tried to free up the mechanism.
The coil melted and the tuning slug got jammed and the
whole mechanism got out of whack ! -- I fixed it using some
spares from my junker FT301 collection.
|ELECTRONIC COMPONENTS ARTICLES by Earl VE3AB
|NEW ARTICLE FEB 1-2016 - ORDERED 25 - BF981s from Ali Express (trying them out) -- BAD PARTS AGAIN !!!!!!!!!!! CLICK HERE FOR ARTICLE ( i got my refund!)
>> -- JUNE 2015 -- MORE BAD DUAL GATE MOSFETS (BF961) out of China --- CLICK HERE FOR THIS NEW ARTICLE IN PROGRESS.
--> May 5- 2015 - A few notes about slug tuned coils - small article click here - It is also referenced above in with the FT301 articles
---->> FEBRUARY 6 -2015 - MY NEW TEST SET UP (using a CB with transistor socket) to TEST RF TRANSISTORS to ensure they work at 27 mhz CLICK HERE
----> DEC 3rd 2014 more not so good (but a few types OK) Electrolytic Capacitors from China --- see my ratings and the test results on this page click here
--->> Nov 29th 2014 GOOD ELECTROLYTIC CAPACITORS -- some good low ESR ELECTROLYTICS .. what I have found through measurements CLICK HERE
--->> 28th November 2014 -- USING NEW BRIGHT LEDs as replacements for incandescent lamps in ham equipment (ie FT301 or others) CLICK HERE
---->> 26 November 2014 -- MORE BAD ELECTROLYTIC CAPACITORS OUT OF CHINA -- NEW ARTICLE -- CLICK HERE FOR THE WORK IN PROGRESS
SEPT 29th 2014 -- SOME SLUG TUNED COIL WORK for a fellow in USA to fix his fathers old radio! -- CLICK HERE FOR THIS ARTICLE
Mar 2014 STILL MORE BAD PARTS OUT OF CHINA - this time BF981s (6 out of 30 were defective)- 20 percent failure rate - brand new parts I tested Article
28 Feb 2014 - MORE bad parts out of China. --- BF981s that are just plain BAD -- click here for new article -- (MY PARTS I SELL are tested ones).
April 6 -2014 --> this time..some good parts from China.. 25 - 2sk125s I ordered and tested.. ALL A-OK - see this new short article link here
--->> 9 December 2013.. Dual Gate MOSFET SHOOT OUT (evaluation of about 10 different ones).. CLICK HERE THIS NEW ARTICLE
----->> ANOTHER NEW ARTICLE December 31-2013 - COUNTERFEIT and POOR quality bad transistors- that I bought from ebay..results of my testing article
o NEW ( NEW OLD SURPLUS) ..Some pictures of the New Old Surplus electronic parts (N.O.S.) that I sell and buy and trade ect.. information page click here
for this one. The hobby of collecting and researching electronic components is discussed in this article.
o Dual Gate Mosfets - Dual Gate Mosfet shootout! Real interesting results of trying Dual Gate Mosfets into the transistor socket of my radio receiver front
end CLICK HERE
o Dual Gate Mosfet: Taking a common and inexpensive but good BF981 and soldering on radial leads for use as plug in replacement for 40673s and others!
click here article ooo JUNE 12th 2016 - I took a 3SK177 dg mosfet and soldered leads onto it using the new to me adapter plates for ADAPTING Surface
mount parts to the older style - through hole lead style -- click on the link for more updates and photos and information on this better method.
o ODDS and SODS.. some of the odd or not run of the mill kind of items I sell (small parts ..ie to fix meter movements and coil bobbins ect. click here this
August 29 2014 ** Guitar FUZZ Distortion Project - I am branching out a bit !! -- I wired up an LM308N (parts I have) to make a type of RAT Distortion FUZZ
maker circuit. - A person wants to buy my older 1984 LM308Ns.. so I built the circuit on a breadboard to test the LM308Ns to make sure they work and play
around with the circuit. ARCTHIS NEW ARTICLE with plenty of pics >>>CLICK HERE <<<--- I may get into building and working on these circuits as there is a
definite market for parts and services.
o Transistor Testing- Common QRP finals and CB radio parts ie 2SC2075, MRF476, 2sc1969 and others testing using a CLASS C circuit/test jig CLICK HERE
- its not bad enough that we have counterfeit components to deal with but some of these fakes are just plain NO GOOD or dont meet the specs .
o TRANSISTOR TESTING - SOME PICTURES OF ME on the bench with the books researching components and testing Transistors and Dual Gate Mosfets.
I sell components in small quantities and I test them before I ship them out. I do catch some defects every so often. link here for article
|o HAM RADIO INFORMATION-- just write me-- I will give you information about HAM RADIO FOR FREE both operating and the Techinical Side
MY EMAIL firstname.lastname@example.org
JUST BECAUSE Im into the TECHNICAL STUFF..ELECTRONICS and components and stuff like that.. doesnt mean all hams are into this kind of
thing. Some hams just like operating the radio. That is fine too ! -- HAM RADIO IS WHATEVER YOU WANT IT TO BE -- TO YOU !
Its a good retirement activity and hobby. You can even operate the radio using a computer and the internet to talk to other hams. I dont do
this (myself)..however.. some people are really into it.
73 EARL VE3AB
|My dear friend Finnigan the
Dachund passed away 7 March
2016 a special memorial page
for Dachshunds has been
set up -- click here to see some
pictures of this great and very
spirited little fellow.
CLICK HERE PICTURE page of
Dachshunds and Finnigan.
|MY RADIO PARTS are now being sold at a new web site:
http://www.nettyelectroncs.com (licenced Ontario Business) .
CLICK HERE FOR MY NEW SMALL BUSINESS WEB SITE. Note that
I screen the parts I SELL.. test them-- due to all the bad parts that are
floating around these days. !! see articles below re: ** bad parts.
|A "FREE" ON LINE
TO AMATEUR RADIO.
NON COMMERCIAL WEB
SITE by Earl Andrews
VE3AB. Elliot Lake, On.
|- FT301 articles -
NOTE Ive moved my Parts selling and small
repair service to my new (commercial) web
site. I sell parts for the FT301 and other older
solid state radios from the 1970s and early 80s.
(see my other commercial web site:
Netty Electronics) NETTY ELECTRONICS LINK
|Above: pictured the parts bins. I have many many parts I have collected
and parts radios and junked radios. I fix them and part them out sometimes
and catalogue and research them and put them into a big data base. I will
never finish the job actually-- but I always look forward to my time doing
This is a very small portion of my inventory. I USED TO WORK IN THE
DEFENCE DEPT UP HERE IN CANADA AS A MATERIAL MANAGER and
Technical specialist for ICs and Resistors and small discrete components
and I have built upon that knowledge and experience. I study older
components and I test components as well. All part of my interests.
THE PARTS COLLECTING and gathering hobby HAS turned into a small
PARTS AT HOME BUSINESS FOR ME - NETTY ELECTRONICS -
|Dedicated to Amateur Radio and Freedom
|above: small city lot and TV tower. I have a modified LNR Precision EF QUAD antenna up currently
(modified by inserting a PAR EF 40-20-10 coil) - it is a 40 ft loaded wire on 40. Works very well actually
on 40 and the other bands. See the article titled: My current LNR "MODIFIED" QUAD BAND
ANTENNA. you can READ ABOUT THIS LNR QUAD BAND (modified) in an article below listed .
SPECIAL NOTE regarding the LNR precision Quad band antenna :
for SWLíng and general listening on the bands: ie Broadcast Band (the LNR quad band antenna works
just as well as my 160 meter tuned inverted L)
|I have a collection of Ten Tec Argonauts. Ive
owned one since 1974. I was first licenced as
VE3ECJ back in 1972. Got interested in QRP
soon after getting on the air. I have some very
memorable qsos with qrpers and with qrp. I
operate abit at higher power levels up to 100
watts. (all wire antennas).
|Why do I write so many articles concerning electronic components. Well.. I sell them on my other site: www.nettyelectronics.com
but: I had been working with them quite a bit when I worked in the Federal Government (Canadian Military Supply System) NATO parts
and MIL SPEC parts. I catalogued and was Material Life Cycle Manager for Microcircuits and Resistors and other small discrete
components. -- That job ended in 2004 with my early retirement up here to Elliot Lake, Ontario Canada -- however.. I have many
questions and I am interested in components .. so... I have carried on working with them in my retirement years.
|Its very peaceful working on
the bench recording parts in
my books and then
transferring them to my
Pure cataloguing. Items are
catalogued for what they are
not who wants to use them or
any such nonsense as that.
I make a heck of alot less
money now but I am free to
learn and I dont receive any
|I collect knobs. Knobs are a big seller. Problem is there are so many styles and
varieties. I have some spare FT301 knobs now. My Atlas 201x knobs, Argosy
and spare Argonaut knobs are pretty well sold out however. I buy or take
donations of old stuff like this ! I have some SBE 34 knobs in good condx now.
|A fellow in the U.S. sent me these Argosy boards and I have them available for
sale. I also have many discrete components for older 1970s and early 80s
My other site "NETTY ELECTRONCS" has my commercial small business
IF you have old junk or battered up radios or whatever.. I can part them out.
I test the parts and circuit boards and I repair them as well.
|I experiment with homebrew antennas as well (when the weather is good).
Above..I wound a coil for a "knock off version"of the LNR Precision match box.
I use end fed wire antennas almost exclusively now.
My modified LNR precision QUAD band antenna can be read about from my article in the
antenna section (listed above). NOTE: the T130-2 in the picture. On my other site:
www.nettyelectronics.com - I sell parts like toroids and enamelled wire and other components.
|73 Earl VE3AB QRP ARCI 3757 - I also belong to
Radio Amateurs of Canada
Ontario Federation of Anglers and Hunters ( I like fishing not
and Flying Pigs arc and CW groups and Yahoo Groups and
OVQRP and other groups.
|For some odd reason - this coil in my ft301 tuning rack (preselector)
melted and the physical mechanism that tunes the 3 coils got damaged.
Stuff happens. Fortunately..I have plenty of spares for FT301s. Just
write me email@example.com or visit my site for NETTY
|SELLING COMPONENTS is a
way of generating some
money to buy more
components and test gear
and the odd ham radio
piece of gear. It is a hobby
more that anything..but to
satisfy the government
(whom I used to work for!) I
HAVE MADE IT OFFICIAL
THAT IT IS A SMALL HOME
BASED BUSINESS ! Selling
components also pays for
my computer/web page
I took an early retirement
option from the feds.
|BACK YARD EXPERIMENTATION WITH A
HOMEBREW END FED ANTENNA and NEW
antenna at VE3AB pictured left a 6 foot dia.
LOOP ! - here is the article Im starting to
write concerning the STL antenna Im trying
I use end fed antennas now because they are
good performers and fit in well with the layout
of my yard here in Elliot Lake, Ontario
CANADA. The STL is (however) gaining favor !
The tower is about 28 foot high with a 12 foot
extension mast. Self supporing TV tower since
2005. Works well and low profile for city lot.
|I'm pretty well sold out of TIL 306s and
TIL 308s but I have quite a few other
I sell used tested crystals for $8.00 ea
- knobs - some panels and other stuff
all at reasonable prices - The ICs I
have some new stock spare ICs and
transistors and I can likely get used
tested RF output components like the
driver transistors, finals and other
parts. (All tested good of course).
|MANUALS (mostly older solid state radios and accessories)
|August 10-2015 I have just uploaded a short
movie on YOU TUBE showing a comparision
in NOISE level QRM for the STl LOOP vs the
wire antenna HERE IS THE LINK TO MOVIE
|NEW YOU TUBE Video about FAKE (useless) RF transistors bought off ebay C5739 (2SC5739s) --
https://youtu.be/tnQmpw5ANjU (you will have to either cut and paste this link into your browser or JUST LOOK
UP MY YOU TUBE CHANNEL UNDER my name: earl andrews and look up the video.
Iam also writing a small article about this as well on this site- Link to come a little later.