1965 Ham License Answers

Novice:

1. Question #9: What method of frequency control is required to be used in the transmitter of a station licensed to the holder of a Novice Class License? The frequency must be crystal-controlled.
2. Question #13: What is the maximum permissible percentage of modulation of an amateur radiotelephone station? 100%
3. Question #17: What is the relationship between a fundamental frequency and its second harmonic; its third harmonic, etc.? The second harmonic is twice the frequency of the fundamental, the third harmonic is three times the fundamental frequency, and so on. A harmonic is always related to its fundamental frequency by an integral multiplier; i.e., 2, 3, 4, 5, 6, etc.
4. Question #23: How is the actual power input to the tube or tubes supplying energy to the antenna of an amateur transmitter determined? The input power is determined by measuring the direct-current plate oltage and the d.c. plate current to the tubes in the final stage in the transmitter. The power input is equal to the plate voltage multiplied by the plate current in amperes.
5. Question #27: What is meant by a "parasitic" oscillation? A parasitic oscillation is one not essential to the operation of the equipment and usually occurring on a frequency considerably removed from the operating frequency.

General:

1. Question #1: Name the basic units of:
   • electrical resistance - ohm
   • inductance - henry
   • capacitance - farad
   • current - ampere
   • electromotive force or potential difference - volt (electromotive force is a fancy term for "voltage")
   • power - watt
   • energy - joule
   • quantity - coulomb
   • magneto-motive force - gilbert
   • frequency - cycles-per-second, or cycles (nowadays known as "hertz")
    
2. Question #10: What is the principal reason for using a filter in a plate power-supply system? The principal reason for using a filter in a plate power-supply system is to smooth out the a.c. ripple component in the output and make it "pure d.c."
3. Question #19: What undesirable effects may result from operation of an unneutralized triode r.f. amplifier in a transmitter? Self-oscillation may result, with consequent radiation on undesired frequencies, possibly outside an amateur band.
4. Question #69: What is meant by a "doubler" stage? A vacuum-type circuit in which the output circuit is tuned to twice or doube the frequency of the input circuit.
5. Question #71: What is the reciprocal of resistance? Conductance, measured in mhos ("ohms" spelled backwards)
6. Question #106: What precaution should be taken to protect filter capacitors connected in series? Resistors having a value of approximately 100,000 ohms should be shunted across each capacitor to equalize the d.c. voltage drops and thus prevent breakdown of the individual capacitors.

Extra:

1. Question #4: What factors determine the core losses in a transformer? Core losses are one of two types, hysteresis and eddy-current losses. Hysteresis losses vary with the type and volume of iron or steel used in the core and with the operating frequency and magnetic flux density. Eddy-current losses vary with the volume and resistance of the core material, the thickness of the laminations, and frequency and the flux density.
2. Question #7: In a Class-C r.f. amplifier, what ratio of load impedance to dynamic plate impedance will give the greatest plate efficiency? The highest possible load impedance will give the greatest efficiency, since the ratio of the power in the load to power lost in the plate becomes larger as the ratio of load impedance is increased. However, under these conditions, the power output is relatively small.
3. Question #12: During 100 percent sinusoidal amplitude modulation, what percentage of the average output power is in the sidebands? 33 1/3% The average power output would increase 50% with such modulation; i.e., a 100-watt unmodulated carrier output would rise to 150 watts. Sidebands carry the excess of 50 watts, which is 1/3 the total.
4. Question #25: What are synchronizing pulses as used in television transmitters and receivers? Synchronizing pulses used in television transmitters and receivers are pulses of extremely short duration which ensure that trace lines across the face of the picture tube in the receiver are synchronized with the trace lines in the television camera.
5. Question #34: What determines the operating frequency of a magnetron oscillator? Its dimensions and the electric and magnetic field intensities; also, the associated circuit constants.
6. Question #46: If the conductors in a 2-wire r.f. transmission line are replaced by larger conductors, how is the surge impedance affected, assuming no change in the center-to-center spacing of the conductor? The surge impedance is lowered.
7. Question #63: What is the purpose of the mosaic plate in a television camera? To what item of photographic equipment is it similar in function? To store an electrical image corresponding to the visual image focused upon it, for later scanning by an electron beam to translate the electrical image into a television signal. Its function is similar to that of the film in a photographic camera, which similarly stores the image for later development.
8. Question #92: What are the "Baudot" and "Seven Unit" codes? How are they used? Both are used in teleprinter operation. Baudot used with synchronous printers, 7-unit with start-stop printers. Each transmitted character has assigned to it a fixed time interval divided into units, 5 for Baudot and 7 for 7-unit teletype. A particular character is distinguished by a unique combination of mark and space units in that particular codes being used in all cases.
9. Question #120: What is the meaning of the term "frequency swing" in reference to frequency-modulation transmitters? The peak difference between the maximum and minimum values of the instantaneous frequency.
10. Question #136: What is the ohms per volt of a voltmeter constructed of a 0-1 d.c. milliammeter and a suitable resistor which makes the full-scale reading of the meter 500 volts? 1000 ohms per volt.
11. Question #181: What is meant by low-level modulation? That applied to an early or intermediate stage of a transmitter (instead of to the final amplifier) i.e., at a point where the power level is comparatively low.
12. Question #204: State where antenna impedance is usually measured. At the point where the antenna is fed. The value so measured is frequently converted into an equivalent value at a current loop.
13. Question #219: Define a "back-wave" and explain what causes it. A signal emitted during key-up conditions. In make-break keying, it may be caused by energy from unkeyed exciter stages leaking through a keyed amplifier (because of improper neutralizations, etc.) or by parasitic oscillation. In frequency-shift keying the "space" signal in the back-wave.

Could you pass the 1965 Ham License exam?

1965 ARRL FCC
License Manual

I was at an estate sale a couple of weeks back and came across a couple of books that got my attention, The Radio Amateur's License Manual and How to Become a Radio Amateur. Unfortunately I didn't get to find out the callsign of whoever it was that had the books.

The license manual covered all of the classes of licenses available at the time: Novice, Technician, General, Conditional (same as General but test taken by mail), Advanced (not available to new applicants), and Extra.


As I scoped out the book, I found some interesting rules that the FCC enforced at the time:

• If you wanted to take the test or renew, you paid $4, and it was good for 5 years. If you changed your address, it was $2.
• Callsigns must be transmitted at the beginning of each transmission, every 10 minutes, and at the end of each transmission (currently hams don't need to identify at the beginning).
• Novices retained their callsigns for a year and must upgrade.
• Hams violating FCC rules faced a $500 fine per day during which the offense occurs.
• Logs were kept of each QSO and must show:
  •  Date & time of transmission  
  •  Signature of each operator
  •  Call of the station contacted
  • Power
  • Frequency
  • Emission type
  • Location
  • Message traffic handled

• Hams had to notify the FCC Engineer-in-Charge if they intended to operate mobile longer than 48 hours.
• If an applicant failed an exam, they had to wait 30 days to re-take the exam.
• The book cost 50 cents, and included the FCC Part 97 rules and regulations.

The other manual
I bought

Some rules have obviously changed. 

What struck me even more was that many of the questions from the Novice/General/Extra questions were pretty tough. Even with my electronics education and background, it was amazing how intricate many of the questions were. Unlike today's question pools, the 1965 pool did not include multiple choice answers with the wrong answers included, but the exams were multiple choice. It also wanted the reader to draw out certain circuits.

So here are some sample questions in the Novice, General, and Extra class exam pool. See how many you can answer. I'll post the correct answers in 24 hours:

Novice:

1. Question #9: What method of frequency control is required to be used in the transmitter of a station licensed to the holder of a Novice Class License?
2. Question #13: What is the maximum permissible percentage of modulation of an amateur radiotelephone station?
3. Question #17: What is the relationship between a fundamental frequency and its second harmonic; its third harmonic, etc.?
4. Question #23: How is the actual power input to the tube or tubes supplying energy to the antenna of an amateur transmitter determined?
5. Question #27: What is meant by a "parasitic" oscillation?

General:

1. Question #1: Name the basic units of:
   • electrical resistance
   • inductance
   • capacitance
   • current
   • electromotive force or potential difference
   • power
   • energy
   • quantity
   • magneto-motive force
   • frequency
    
2. Question #10: What is the principal reason for using a filter in a plate power-supply system?
3. Question #19: What undesirable effects may result from operation of an unneutralized triode r.f. amplifier in a transmitter?
4. Question #69: What is meant by a "doubler" stage?
5. Question #71: What is the reciprocal of resistance?
6. Question #106: What precaution should be taken to protect filter capacitors connected in series?

Extra:

1. Question #4: What factors determine the core losses in a transformer?
2. Question #7: In a Class-C r.f. amplifier, what ratio of load impedance to dynamic plate impedance will give the greatest plate efficiency?
3. Question #12: During 100 percent sinusoidal amplitude modulation, what percentage of the average output power is in the sidebands?
4. Question #25: What are synchronizing pulses as used in television transmitters and receivers?
5. Question #34: What determines the operating frequency of a magnetron oscillator?
6. Question #46: If the conductors in a 2-wire r.f. transmission line are replaced by larger conductors, how is the surge impedance affected, assuming no change in the center-to-center spacing of the conductor?
7. Question #63: What is the purpose of the mosaic plate in a television camera? To what item of photographic equipment is it similar in function?
8. Question #92: What are the "Baudot" and "Seven Unit" codes? How are they used?
9. Question #120: What is the meaning of the term "frequency swing" in reference to frequency-modulation transmitters?
10. Question #136: What is the ohms per volt of a voltmeter constructed of a 0-1 d.c. milliammeter and a suitable resistor which makes the full-scale reading of the meter 500 volts?
11. Question #181: What is meant by low-level modulation?
12. Question #204: State where antenna impedance is usually measured.
13. Question #219: Define a "back-wave" and explain what causes it.

Meet my daughter, KJ4QNH!!!

Nearly a year ago, I posted that my daughter Lauren was studying to be a ham. Unfortunately, with school, life, girl scouts, and basically everything else getting in the way, we were limited to 1/2 hour Q&As once or twice a week on much of what she already studied, and a few sample tests on QRZ, most of which she missed passing by a couple of questions.

As summer approached, I was looking forward to sitting down with her and studying, but she would lose interest (or rather, she was wanting to play with her friends, watch TV, play her Nintendo DS, etc.) or I would not be able to help her due to household "honeydews" that were never-ending.

I was determined not to force her in to doing this. I didn't want to pressure her, and only wanted her to get her license because she wanted to do it, not because I (or my wife) wanted her to. I walked a fine line between encouraging her and making her. I figured if I forced her in to studying, it would only discourage and block her from wanting to get her license, but I would often remind her that she needed to study.

I would occasionally ask her "are you still interested in getting your license?", and she eagerly replied she was determined to get it.

We continued to study together whenever possible and even my wife (Jessie, K4RLJ) was occasionally helping. Her biggest stumbling blocks were the frequencies allocated to Technician class licensees, what bands belonged to what frequencies, and the questions relating to Ohm's Law.

Then I remembered that on occasion ham groups have all-day classes followed by exams that same day. I was listening to a local net and caught some guys talking about one that had just occurred the Saturday prior and decided to email some folks and ask if there was any more such groups that were going to take place anytime soon. I was met with 4 different groups conducting such classes, but none were here in town. One was 2 hours south in Chattanooga, another in Kingsport, and yet another in North Carolina.

I then got an email from a friend who was a VE for W5YI and was going to have a class in my wife's hometown of LaFollette (about an hour north of here) and checked with Lauren and we decided we would do that one.

I gathered that this would be the key to Lauren's passing her test. There wouldn't be any TV, internet, or other distractions and she could focus completely on the task at hand. Plus she had been studying off-and-on for over a year, so my wife and I were confident she would focus her efforts and possibly pass the test. We didn't expect her to pass, but we didn't expect her to fail, either.

I did this once before with my sister-in-law when she was about 13. That one was an all-day session, where one person read off all the questions, and the correct answer, and they moved on to the next question. They then took the exams the next morning. Unfortunately she failed her test.

She did eventually get her ticket after studying and my wife took her to an exam session in Lafollette scheduled just for her. She did not, however get much more involved and her license has expired. If she wanted to get her license, she'd have to re-take the test and get a new callsign.

This session was different from my sister-in-law's. We met at Paradigm Church, which was located at a small shopping center on the far end of town. There, they gave her the questions and correct answers on a study sheet and they let everyone study at their own pace, without reading the pool aloud.

There was one person who was blind, and while Lauren was studying, several of us who were sitting around with nothing to do decided to help him and went into another room and read the questions and answers to him. His father who wasn't licensed either helped out as well.

They would study for 45 minutes and then take a 15 minute break. There was a 90 minute lunch in between.

The guys there were very nice about providing pizza for everyone and a few drinks to pass around. It was small, but quiet, and Lauren was concentrating like I've never seen before.

The study session was scheduled to last until 4PM, but Lauren had already gone through the pool by 11AM. She wanted to take the test right then, but there wasn't enough VEs to administer the examination. I quizzed her on several parts and she would miss one or two, and I would have her go back and re-study those portions. Finally, as the afternoon went on, the VEs arrived and started to fill out the Form 605's for her to get her exam when they asked for her picture ID...and guess who forgot to pick up her picture ID...

I suddenly entered a panic mode. I called Jes and proceeded to freak out asking for anything with her picture on it. Her school had picture IDs produced for those times when they might (god forbid) get lost or missing and I fortunately had one in my wallet. They asked for a photocopy. And guess who didn't have a copier in his back pocket...

I then scoured the town for someone...ANYONE...with a copier handy. The local pharmacies didn't have them anymore. For once, Walmart didn't have what I needed. All the check cashing places with copiers and faxes were all closed. Fortunately there was a rental place open at the local mall and I was able to coax the person behind the counter to photocopy the ID.

By the time I got back (30 minutes later) the other two who were studying alongside Lauren were in the middle of their tests, and Lauren was waiting on me with the photocopy.

We filled out the paperwork, handed over her $14 application fee, and away she went. It was hard not to stare at her while she was taking the test, but I fought the urge as best I could.

20 minutes later, she turned everything in. And we waited.

And waited...

Aaaaaaand waited...

I couldn't get any kind of yea/nay from the VEs one way or the other. We sat there patiently while they graded the other tests and hers. I would see them mark the test and pray it wasn't hers they were bleeding red ink all over.

They told one of the others that she had passed, but hadn't told us if Lauren passed. The longer it went on, the less confident we felt that she had passed.

Finally, the VEs called her up to sign her name on the CSCE. "So she passed?" I asked. "Well heck yeah she did!" was the reply, and Lauren smiled as bright as she possibly could.

We called Jes, her grandmother, some friends, and I posted her success on Twitter and Facebook and the kudos came in from hams the world over.

She missed 7 of 9 questions she could miss and still pass the exam. It took 11 days to get her callsign as the FCC was slow to process the paperwork and Veteran's Day also had an effect on the delay.

Earlier this evening, she had her first QSO with Jim, KQ4AB, who was the man who was overseeing the test session. At first I thought I would be her first QSO, or maybe Jes, or a couple of friends of ours who have kids that are hams, but I thought that she should check in to his net and have a quick QSO with him. He got a kick out of it and I recorded it on my cell phone. Here's the video.

So now, I have a wife and daughter who are hams. Just one more daughter to go. And she's cracked open the book and begun her journey. It may be a couple of years (she just turned 8) but she's determined to be like her sister.

I couldn't be happier.

Congrats to George's daughter

TWIAR's producer George Bowen, W2XBS left the following on TWIAR's web site:

My apologies for not having TWIAR edition #860 available on the web site. This weekend, my daughter and Bill Barans son Zachary successfully passed their technician exams and should have their call signs this week. This endeavor to have yet another ham in my family has taken up considerable time, which resulted in edition 860 not being available. Please look for a brand new This Week in Amateur Radio and TWIARhn (Edition #861) this coming weekend October 10th. This weeks Edition #245 of TWIARi International is now up and available.
73 George - Executive Producer

This Week in Amateur Radio

Looks like George has a decent excuse this week.

I've been trying to get my daughter Lauren (age 9) motivated into getting her ticket before next June, when the question pool will change. We got started late in the summer, and she was very motivated. But, as time went on, she started to get distracted with her friends, TV, etc. My quagmire is that I will not push her because I don't want her to get licensed because I want her to, but because she wants to get her license.

It's tough to keep her motivated and not seem pushy. She hasn't looked at the book for a couple of weeks now. But, my other daughter Amber (who turned 8 last Sunday) has now expressed an interest in ham radio as well. Perhaps a little competition is good for motivating them. They tend to be competitive in many things (as sisters tend to be) so maybe I need to light a fire under Lauren by teaching Amber.

I also can try to find an all-day class where they spend about 8 hours learning the question pool, and then they take the exam the following day. Problem is, where to find one around here?

I took my sister-in-law to one of these classes when she was 13 and very much interested in getting a license. Unfortunately she didn't pass the exam (missed by 3 questions) but she kept at it and got her license about a month later. She ended up letting her license expire, but she spoke to me recently about wanting to get it again.

Maybe I ought to conduct my own session with all three of them. Although my patience threshold would be equivalent to that of Lewis Black.

Thanks but no. I'd better find someone else to lead the classes.