NV2K
| Joined: | Tue, May 20th 2014, 01:06 | Roles: | N/A | Moderates: | N/A |
Latest Topics
| Topic | Created | Posts | Views | Last Activity |
|---|---|---|---|---|
| Instructor Resources for Amateur Extra | Jan 4th, 20:45 | 1 | 128 | 1 week, 2 days ago |
| Which 8-pin DIN for Icom ACC(1)? | Feb 22nd 2018, 15:59 | 1 | 7,261 | on 22/2/18 |
| AA4PB Audio Interface: Any advice? | Nov 7th 2015, 19:31 | 6 | 10,490 | on 6/3/19 |
| Feeding an off-center fed dipole | Jul 8th 2015, 23:47 | 3 | 6,753 | on 9/7/15 |
| Cabrillo template for ARRL DX SSB? | Mar 10th 2015, 19:26 | 3 | 8,142 | on 22/11/16 |
| W6MUR Article on the Z Match? | Jan 15th 2015, 23:54 | 3 | 8,124 | on 16/1/15 |
| ARRL gain scaling definition? | Nov 30th 2014, 00:35 | 4 | 7,353 | on 4/12/14 |
Latest Posts
| Topic | Author | Posted On |
|---|---|---|
| Is this all spam? | N7JCT | 1 week, 2 days ago |
| The choices are not mutually exhaustive, so I can't answer the survey directly; I'll do it here. This is one of the few threads that isn't spam in this forum. That's my answer. |
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| Instructor Resources for Amateur Extra | NV2K | 1 week, 2 days ago |
| Would post this under "Education," but that's all spam, flotsam, and jetsam, and other junk. I'm slated to teach an AE Upgrade course starting the end of the month. According to "Instructor Resources," a set of power point decks are "coming soon!" Unfortunately, this promise was made several months ago, and "soon" has come and gone some time ago. Other resources, such as the St Charles, MO, slide decks, are no longer available (given that they were written about three question pools ago, not terribly surprising). Noji's presentations are good, but are not synchronized with the License Manual. My course begins in three weeks. I am willing to serve as a reviewer/beta tester. Please make this long-promised resource available. I would rather not cancel the course because ARRL reneged on its promise. Thank you. |
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| Which 8-pin DIN for Icom ACC(1)? | NV2K | on 22/2/18 |
| Several Icom rigs use a pair of DIN connectors for accessories. ACC(1) is an 8-pin DIN connector; ACC(2) is a 7-pin. Problem is, there are two popular variants of the 8-pin connector: a 262° version and a 270° version. Which one is it? The Icom service manuals do not seem to indicate which it is. Anybody use an aftermarket plug and can tell me which to acquire? Thank you in advance! |
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| Extra math questions | Bobby32955 | on 22/2/18 |
| Good on you for asking! I teach Extra upgrade classes, so I have an idea of what is happening here. How you enter this into your calculator depends on which calculator you have. For most, it is easiest to start with the product of L and C. For that, you should obtain 2.00E-15. Next, take the square root; to three digits this is 4.47E-08. Multiply this by 2π; you'll have 2.81E-07 to three significant digits. Take the reciprocal of this to obtain 3.56E+06, or 3.56 MHz, in agreement with the text. Remember, you will only see a few questions (likely four) involving computation on the exam. Do not let computational problems stress you out. GL es 73 |
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| AA4PB Audio Interface: Any advice? | NV2K | on 19/12/17 |
| Here's an update: The connection labelled "Line In" is actually the line out, and vice-versa. I do not know what the impact will be of having swapped the primaries and secondaries of the transformers because of this, but suspect it will be small if not non-existent because they are 1:1 and are used for isolation only. I would like to get the PTT from the right audio channel, as very few computers these days are equipped with a TIA-232 serial interface. |
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