Re: [Elecraft] OT: The Colpitts mystery

2020-05-01 Thread Robert G Strickland via Elecraft
I once spent 15+ years racing bicycles, officiating and promoting races. During the same period lots of bikers tried their hand at building bike frames. This required design, fabricating brazing jigs, and the actual torch work. A few became known builders while most just gave it up as too

Re: [Elecraft] OT: The Colpitts mystery

2020-04-30 Thread Josh Fiden
The barrier to entry certainly isn’t what it used to be, but that’s probably a good thing. If someone gets on the air and has fun (even FT8 hihi), I really don’t care if they can recite Ohm’s law or not. When they are interested, it’s as easy as picking up a copy of the ARRL Handbook. Doesn’t

Re: [Elecraft] OT: The Colpitts mystery

2020-04-30 Thread Dean L
We all have similar stories, sad part is, there are extra class licensees that dont know any more about oscillators than ohms law or caculating the length of a half wave dipole. The ones to "tell the tell" ain't gonna be around forever, few of us left, ain't no more coming over. 73 Dean K2WW On

Re: [Elecraft] OT: The Colpitts mystery

2020-04-30 Thread Phil Kane
On 4/30/2020 1:32 PM, Bill Steffey NY9H wrote: > and when they wanted my P1 ticket to give me GROL I took a pass, as I > was NOT going to give that up. So you wound up with nothing when your P1 expired versus keeping the same privileges with a GROL which soon became a lifetime license. PS - you

Re: [Elecraft] OT: The Colpitts mystery

2020-04-30 Thread Phil Kane
On 4/30/2020 12:58 PM, John Simmons wrote: > All the broadcast inspections are now contracted out to private companies. Not exactly. The FCC started the Alternate Broadcast Inspection Program (ABIT) about the time that I retired from the FCC. in the mid 1990s when there was a push to

Re: [Elecraft] OT: The Colpitts mystery

2020-04-30 Thread hawley, charles j jr
30, 2020 1:18 PM To: j...@audiosystemsgroup.com Cc: elecraft@mailman qth. net Subject: Re: [Elecraft] OT: The Colpitts mystery I took my Novice exam from another ham in 1972, but my general and advanced at the FCC in 1977 or 1978. 73 Eric WD6DBM On Tue, Apr 28, 2020, 9:27 PM Jim Brown wrote

Re: [Elecraft] OT: The Colpitts mystery

2020-04-30 Thread Bill Steffey NY9H
or another FCC engineer Burson at the broadcast station inspections. 73 KI7Y - Original Message - From: "Phil Kane" To: "Elecraft" Sent: Wednesday, April 29, 2020 7:32:31 PM Subject: Re: [Elecraft] OT: The Colpitts mystery On 4/29/2020 5:52 PM, Macy monkeys wrote:

Re: [Elecraft] OT: The Colpitts mystery

2020-04-30 Thread John Simmons
29, 2020 7:32:31 PM Subject: Re: [Elecraft] OT: The Colpitts mystery On 4/29/2020 5:52 PM, Macy monkeys wrote: I took my General at the FCC office downtown Portland in the late 60s. The examiner was a tough and gruff staffer named Francis McCann. IMHO, he was extra tough on 14 year olds, hi. You know

Re: [Elecraft] OT: The Colpitts mystery

2020-04-30 Thread JOE
On 4/30/2020 1:35 PM, elecraft-requ...@mailman.qth.net wrote: "In the 1950s and 1960s, Novice, Technician and Conditional exams were given by licensees acting as volunteer examiners." I took my novice test when I was 11 years old from W1ZWG at his home. This was the summer of 1958 and I

Re: [Elecraft] OT: The Colpitts mystery

2020-04-30 Thread Jim Cassidy
at the broadcast station inspections. 73 KI7Y - Original Message - From: "Phil Kane" To: "Elecraft" Sent: Wednesday, April 29, 2020 7:32:31 PM Subject: Re: [Elecraft] OT: The Colpitts mystery On 4/29/2020 5:52 PM, Macy monkeys wrote: > I took my General at

Re: [Elecraft] OT: The Colpitts mystery

2020-04-30 Thread Eric Norris
I took my Novice exam from another ham in 1972, but my general and advanced at the FCC in 1977 or 1978. 73 Eric WD6DBM On Tue, Apr 28, 2020, 9:27 PM Jim Brown wrote: > On 4/28/2020 4:16 PM, EricJ wrote: > > but some time in the mid-50s it was given over to volunteer hams. > > My memory is that

Re: [Elecraft] OT: The Colpitts mystery

2020-04-30 Thread Fred Jensen
Probably not Bill since it has drifted way off original topic and continues to do so.  I posed the original question.  My guess is that the Colpitts oscillator was probably the easiest to get stable [or nearly so] of the extant designs then because it uses capacitive feedback.  It would be the

Re: [Elecraft] OT: The Colpitts mystery

2020-04-30 Thread Phil Kane
On 4/29/2020 10:31 PM, Edward R Cole wrote: > Missed two questions on the written exam (because I knew more than the > test designers and many of the answers were incorrect). But it was a product of the private sector :) 73 de K2ASP - Phil Kane Elecraft K2/100 s/n 5402 >From a Clearing

Re: [Elecraft] OT: The Colpitts mystery

2020-04-30 Thread Phil Kane
On 4/29/2020 10:31 PM, Edward R Cole wrote: > CW test had been downgraded to a multiple question exam about plain > language text message vs the five mixed character groups back in Detroit. The ham CW test was always plain language text. 5-character groups were only for the Radiotelegraph CW

Re: [Elecraft] OT: The Colpitts mystery

2020-04-29 Thread Edward R Cole
I guess a lot of us took the Commercial Radiotelephone License. I got my Novice and Technician License by my mentor. That was the General Class written exam back then. Tried several times to pass my General CW test at the Detroit FCC office (we lived 70-miles away so not qualified for a

Re: [Elecraft] OT: The Colpitts mystery

2020-04-29 Thread Hisashi T Fujinaka
I took my Tech and Advanced tests in Portland. I think I took the 13WPM twice before I passed. I also failed my 2nd Class Radiotelephone license (it was free and I didn't study enough and I failed by two questions). I remember the main guy was George Wager, and there was a woman named Sheryl who

Re: [Elecraft] OT: The Colpitts mystery

2020-04-29 Thread Nr4c
Will this “Mystery” ever be solved? Sent from my iPhone ...nr4c. bill > On Apr 29, 2020, at 10:25 PM, Phil Kane wrote: > > On 4/29/2020 4:46 PM, Jim H via Elecraft wrote: > >> I did not like it when it was converted to General Radio Telephone and life >> time > > You weren't alone. I was

Re: [Elecraft] OT: The Colpitts mystery

2020-04-29 Thread Phil Kane
On 4/29/2020 5:52 PM, Macy monkeys wrote: > I took my General at the FCC office downtown Portland in the late > 60s. The examiner was a tough and gruff staffer named Francis McCann. > IMHO, he was extra tough on 14 year olds, hi. You know my heart was > racing when that series of V's came through

Re: [Elecraft] OT: The Colpitts mystery

2020-04-29 Thread Phil Kane
On 4/29/2020 4:46 PM, Jim H via Elecraft wrote: > I did not like it when it was converted to General Radio Telephone and life > time You weren't alone. I was one of the field supervisors whose opinion was being considered by the committee that dealt on how to do the transition, but the

Re: [Elecraft] OT: The Colpitts mystery

2020-04-29 Thread Macy monkeys
I took my General at the FCC office downtown Portland in the late 60s. The examiner was a tough and gruff staffer named Francis McCann. IMHO, he was extra tough on 14 year olds, hi. You know my heart was racing when that series of V's came through those headphones! John K7FD > On Apr 29,

Re: [Elecraft] OT: The Colpitts mystery

2020-04-29 Thread EricJ
A google search brought up a number of websites with a history of ham licensing. They all say exactly what I said. From Wikipedia: "In the 1950s and 1960s, Novice, Technician and Conditional exams were given by licensees acting as volunteer examiners."

Re: [Elecraft] OT: The Colpitts mystery

2020-04-29 Thread Jim H via Elecraft
Hi all,This brings back old memories. In 1962, I was in Vocational School in St Paul, MN studying Electronics. My instructors told me to get a 1st Phone w radar endorsement as it would make it easier to get a job. So I did at the FCC office in St Paul, and since then every job I had, required a

Re: [Elecraft] OT: The Colpitts mystery

2020-04-29 Thread John Simmons
I took my Extra at the FCC in St Paul somewhere 1985-1987. It was about 6 months before the FCC testing ended. I wanted to get it out of the way before the VE program started. Fear of the unknown, I guess. I worked as a VE early on in the program. I've seen some abuses, but overall I think it

Re: [Elecraft] OT: The Colpitts mystery

2020-04-29 Thread Fred Jensen
I'm pretty sure it was in the early 80's. 73, Fred ["Skip"] K6DGW Sparks NV DM09dn Washoe County On 4/28/2020 9:27 PM, Jim Brown wrote: On 4/28/2020 4:16 PM, EricJ wrote: but some time in the mid-50s it was given over to volunteer hams. My memory is that it was a LOT later than that. I'd

[Elecraft] OT: The Colpitts mystery

2020-04-29 Thread Doug Faunt N6TQS +1-510-717-1197
I took the commercial tests in '69. I seem to recall having to learn the various oscillator circuits. I was an ATN2 on night check in VA-125 in Lemoore, CA. The night check AT shop Chief wanted to get his 2nd class Radiotelephone so he could work on aircraft electronics when he retired, so he had

Re: [Elecraft] OT: The Colpitts mystery

2020-04-29 Thread Roger D Johnson
I was stationed with the Coast Guard in Kodiak, Alaska between Summer 1976 and Summer 1978. I flew up to Anchorage to take my Extra exam before an examiner. Probably sometime in 1977. 73, Roger On 4/29/2020 10:47 AM, Ted Roycraft wrote: I took the test for Extra administered by an FCC

Re: [Elecraft] Elecraft] OT: The Colpitts mystery

2020-04-29 Thread Dave Fugleberg
Yep, that was the textbook for the Communications class I had in electronics school in 1983. One of the requirements to pass the class was to pass the General Radiotelephone exam. The FCC Examiner came over from the St Paul field office to the technical school to administer the exam to the class.

Re: [Elecraft] OT: The Colpitts mystery

2020-04-29 Thread EricJ
Poor choice of words on my part, Jim. "Volunteer hams" were NOT VE's . They weren't recognized by or known to the FCC other than as ham licensees. A prospective ham would find a local ham to volunteer to administer the exam and sign some forms. I don't think it could be a relative, but other

Re: [Elecraft] OT: The Colpitts mystery

2020-04-29 Thread Ted Roycraft
I took the test for Extra administered by an FCC examiner, David Popkin, in NYC in 1964.  So there were still FCC examiners then. Funny that I still remember David Popkin's name but I can't remember what I had for dinner last night. 73, Ted, W2ZK On 4/29/2020 12:27 AM, Jim Brown wrote: On

[Elecraft] Elecraft] OT: The Colpitts mystery

2020-04-29 Thread Gerry Villhauer
The text book of choice for the commercial license test was: Electronic Communications by Shrader. I have a copy, 2nd addition. I used it for passing my 2nd and 1st class commercial test...Now the General Radio Telecommunication License. Gerry, W0GV

Re: [Elecraft] OT: The Colpitts mystery

2020-04-29 Thread N4ZR
Yes, that's right.  I took the Novice exam in May 1954 and the General exam in May and June, 1955. both at the FCC in Detroit - flunked the code first time around.  Does anyone remember K8DX, long-time head of the Detroit office of the FCC and a truly formidable figure (especially if you're

Re: [Elecraft] OT: The Colpitts mystery

2020-04-28 Thread Jim Brown
On 4/28/2020 4:16 PM, EricJ wrote: but some time in the mid-50s it was given over to volunteer hams. My memory is that it was a LOT later than that. I'd guess late '70s to early '80s. 73, Jim K9YC __ Elecraft mailing list Home:

Re: [Elecraft] OT: The Colpitts mystery

2020-04-28 Thread Phil Kane
On 4/28/2020 7:17 AM, Bob McGraw K4TAX wrote: > I recall many much older folks seemingly to be struggling to take the > tests.  Some commented "what's this kid doing in here?"  Seems some had > taken it several times without success.  U took my Second Phone exam in 1952 when I was 16 (senior

Re: [Elecraft] OT: The Colpitts mystery

2020-04-28 Thread Phil Kane
On 4/28/2020 11:35 AM, Mike Short wrote: > I got my Novice in 1972 in Boise Idaho. I don’t remember if there was an > FCC office there. Would they have gone to other cities to administer exams, > or did they have VE’s by then? My dad and I both tested together. In that era there were traveling

Re: [Elecraft] OT: The Colpitts mystery

2020-04-28 Thread EricJ
Any General Class ham could administer the Novice test.  The FCC field offices initially administered the testing, but some time in the mid-50s it was given over to volunteer hams. It could be anyone you could dig up to sign the paperwork. There were no designated VEs at the time. I don't

Re: [Elecraft] OT: The Colpitts mystery

2020-04-28 Thread puckrat
I took my First Phone exam at the Seattle FCC office in the early 70's. You had to pass the elements for the 2nd before they would administer the first class elements. I distinctly remember a schematic of a mobile power supply with various questions on the test I had. The thread reminded me that

Re: [Elecraft] OT: The Colpitts mystery

2020-04-28 Thread David Herring
I remember in 1976 getting my novice ticket and the test was administered by the local club officers (same 3 guys who taught the class), but in 1977-ish I had to go to the FCC field office in San Diego (the closest one to me at the time) to take the General tests. I guess they could give

Re: [Elecraft] OT: The Colpitts mystery

2020-04-28 Thread Jim Brown
On 4/28/2020 7:17 AM, Bob McGraw K4TAX wrote: That was 60 years ago. Great story, Bob. I grew up in Huntington, WV, and took the exams on the 4 times a year visits to Charleston by the examiner. It was a long narrow room in the basement of a federal building there, with 40 desks and a

Re: [Elecraft] OT: The Colpitts mystery

2020-04-28 Thread Mike Short
I got my Novice in 1972 in Boise Idaho. I don’t remember if there was an FCC office there. Would they have gone to other cities to administer exams, or did they have VE’s by then? My dad and I both tested together. Mike AI4NS On Tue, Apr 28, 2020 at 12:49 Jim Campbell wrote: > The time of which

Re: [Elecraft] OT: The Colpitts mystery

2020-04-28 Thread Jim Campbell
The time of which I speak was in the mid-1950s. As I vaguely remember there was study material that prepared you to be a knowledgeable ham. There was also a big book that prepared you technically to be a radio station engineer. At a later time there was a one-day cram course to prepare you for

Re: [Elecraft] OT: The Colpitts mystery

2020-04-28 Thread Raymond
Originally question pool was not published. The people who taught quickie courses and published exam guides did not have licenses they would take exam, fail it and report new questions. Ray W8LYJ Sent from my iPhone > On Apr 28, 2020, at 10:50, EricJ wrote: > > The FCC question pool was

Re: [Elecraft] OT: The Colpitts mystery

2020-04-28 Thread EricJ
The FCC question pool was always published by the Government Printing Office. There were no answers though. All the study guides of the day were based on that pool including the ARRL License Manual. Except for the Novice exam, I took General (Boston), Advanced and Extra (Long Beach) at FCC

Re: [Elecraft] OT: The Colpitts mystery

2020-04-28 Thread kc8wh.mh
) To: Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] OT: The Colpitts mystery Anybody remember the Bash books?-de John NI0KJim Campbell wrote on 4/28/2020 9:55 AM:> While in college, I co-oped with the FCC in Atlanta, GA. I had to take > and pass my Radiotelephone First and Gener

Re: [Elecraft] OT: The Colpitts mystery

2020-04-28 Thread Walter Underwood
I didn’t know about Dick Bash’s “The Final Exam” series at the time, but they are in The Internet Archive. If you have a question about what was on the exam in 1981, these probably have the answer. https://archive.org/search.php?query=final%20exam%20bash There are other license manuals there,

Re: [Elecraft] OT: The Colpitts mystery

2020-04-28 Thread Jim Rhodes
Yes, and they changed the questions often to try to put him out of business. Now they just publish them themselves. On Tue, Apr 28, 2020, 10:32 John Simmons wrote: > Anybody remember the Bash books? > > -de John NI0K > > Jim Campbell wrote on 4/28/2020 9:55 AM: > > While in college, I co-oped

Re: [Elecraft] OT: The Colpitts mystery

2020-04-28 Thread John Simmons
Anybody remember the Bash books? -de John NI0K Jim Campbell wrote on 4/28/2020 9:55 AM: While in college, I co-oped with the FCC in Atlanta, GA. I had to take and pass my Radiotelephone First and General class licenses before I was allowed to administer those exams. If you did not pass a test

Re: [Elecraft] OT: The Colpitts mystery

2020-04-28 Thread Jim Campbell
While in college, I co-oped with the FCC in Atlanta, GA. I had to take and pass my Radiotelephone First and General class licenses before I was allowed to administer those exams. If you did not pass a test you had to wait 30 days before you could take it again. Some applicants tried to game

Re: [Elecraft] OT: The Colpitts mystery

2020-04-28 Thread Bob McGraw K4TAX
As a 17 year old, I rode the train {pulled by a coal fired locomotive} from Fulton, KY to Memphis, TN.  I had to walk about 8 blocks to the Post Office building where the FCC administered the tests.  I took the 4 elements and passed all 4 of them earning me a First Class Radio Telephone

Re: [Elecraft] OT: The Colpitts mystery

2020-04-28 Thread Victor Rosenthal 4X6GP
__ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list:

Re: [Elecraft] OT: The Colpitts mystery

2020-04-27 Thread Kevin Cozens
On 2020-04-27 11:06 p.m., Phil Kane wrote: On 4/27/2020 11:03 AM, Fred Jensen wrote: What was it with the FCC and the Colpitts oscillator schematic on the exams in the 50's/early 60's?  It was on my General ['54] and Extra ['56] exams, and practically everyone else I've asked says it was on

Re: [Elecraft] OT: The Colpitts mystery

2020-04-27 Thread David Gilbert
I would imagine that a lot of people still know what transconductance is.  That's how FETs work ... voltage control of current. Dave   AB7E On 4/27/2020 8:06 PM, Phil Kane wrote: The Second Telegraph exam that I took about 8 years ago had the same questions as the one that you took "back

Re: [Elecraft] OT: The Colpitts mystery

2020-04-27 Thread Phil Kane
On 4/27/2020 11:03 AM, Fred Jensen wrote: > What was it with the FCC and the Colpitts oscillator schematic on the > exams in the 50's/early 60's?  It was on my General ['54] and Extra > ['56] exams, and practically everyone else I've asked says it was on > theirs too.  There are other oscillator

Re: [Elecraft] OT: The Colpitts mystery

2020-04-27 Thread Gmail - George
Sent: Monday, April 27, 2020 2:03 PM To: elecraft@mailman.qth.net Subject: [Elecraft] OT: The Colpitts mystery What was it with the FCC and the Colpitts oscillator schematic on the exams in the 50's/early 60's? It was on my General ['54] and Extra ['56] exams, and practically everyone else I've

Re: [Elecraft] OT: The Colpitts mystery

2020-04-27 Thread Victor Rosenthal 4X6GP
Mine was the push-pull triode RF amplifier (not "linear"!), making sure to show the neutralization circuit. They didn't want any high-powered self-excited oscillators on the bands! 73, Victor, 4X6GP Rehovot, Israel Formerly K2VCO CWops no. 5 http://www.qsl.net/k2vco/ On 27/04/2020 21:03, Fred

Re: [Elecraft] OT: The Colpitts mystery

2020-04-27 Thread David Gilbert
The Colpitts oscillator was regarded as being the most stable oscillator, which is why it probably was always there, and it was indeed on my test in the mid-60's.  But the Hartley oscillator was also on my test if I remember correctly, as was the tuned-plate tuned grid oscillator.  If I

[Elecraft] OT: The Colpitts mystery

2020-04-27 Thread Fred Jensen
What was it with the FCC and the Colpitts oscillator schematic on the exams in the 50's/early 60's?  It was on my General ['54] and Extra ['56] exams, and practically everyone else I've asked says it was on theirs too.  There are other oscillator circuits of the day.  Colpitts uses capacitive