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Lscott

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Everything posted by Lscott

  1. It's like any other hobby specific area. They all have their funny jargon. After you're in it a bit you'll pick it up quick enough. Remember just one thing, DON'T BE AFRAID TO ASK QUESTIONS! That's how you learn.
  2. I believe if you do a search on the forum here you'll find some threads on the topic. From what I've read, I don't own any BTW, people have had very good luck with the Motorola radios. These are "spread spectrum" frequency hopping radios and are only compatible with like/similar models from the manufacture when programmed with the same "hop set."
  3. Don't depend on the accuracy of the frequencies you see in their database. They depend on users to send them info, which they try to verify. I have noticed some retail frequencies for a local mall where the store has been out of business for a number of years yet the entry remains in their database. I had attempted to get some frequencies added a few years ago but I was told by the admin for that area he wouldn't do it without further confirmation. After that experience I just don't bother. If you're not hearing any traffic on the frequencies it's very likely they are no longer used. One fairly good check however is look to see if there is an FCC call sign listed. If so then look it up on the FCC's database. Under that call sign there is a tab for frequencies licensed. If the ones you have are not listed then for sure they aren't used any longer and you can delete them.
  4. There seems to be some confusion when reading the regulations. I had to re-read it several times before it made sense, at least to me, with how it was written. It made more sense when I considered the radios, the commercial ones I have, with Part 95 and 90 certification. The radios where manufactured to sell into different markets. This was before the 2017 rule changes. If the radio was programmed with Ham frequencies AND those were an exclusive allocation for Ham we would have a problem. At the time those radios were designed and certified for business use of GMRS frequencies it was legal. With the 2017 changes not anymore and why you are very unlikely to find a manufacture that will bother, no market. The FPP issue is pretty clear cut with little wiggle room. The reason why you can find it on some radios apparently there are some government agencies where it is allowed.
  5. A bit off topic but the above section "C" is phrased in a peculiar way with regard to what frequency, or frequencies, are programmed into a radio. The specific argument has to do with having Ham 70cm frequencies in the radio while also having GMRS frequencies at the same time. There are people who claim it isn't legal. I disagree. First off I mentioned in a post a while back that the Ham 70cm band is not an exclusive allocation. Hams only have secondary privileges. The primary users, typically government stations, are. Those frequencies are licensed and the radios require certification, even if they fall within the Ham band. Due to the statement: "unless such transmitter is also certified for use in another radio service for which the frequency is authorized and for which certification is also required" Having a "Ham" 70cm frequency in the radio along with GMRS can be argued to comply with the above quote rule section and thus legal. Where you do run afoul of the rules is with the FPP, Front Panel Programming, that allows the user to enter an arbitrary frequency into the radio. I believe that's what doomed the first generation Baofeng radios. They had Part 90 certification, BUT that also required the radios can not allow arbitrary frequency entry under Part 90. In a quick move the radios where shipped with the frequency programming functionality disabled and either required it to be enabled through a menu setting or the use of the programming software to enable it. Some of the current model LMR, commercial, type radios also allow FPP. However it has to be specifically enabled through the radio's programming software. It can't be enabled by accessing any controls the user can manipulate. The programming software has warnings about making sure the "feature" is disabled before turning over the radio to the user for normal operation.
  6. Don't expect much range. They are basically radiating dummy loads. IMHO they are a waste of money.
  7. If you look at a site like "radioreference.com" you can find listing like the attached. Just have to check the area where you're located to see if there is anything.
  8. Most of the comments are about the radio's electrical performance. The second factor is the mechanical durability. In particular the commercial radios have to survive a lot of accidental, and deliberate, abuse by users. One used radio I purchased off of eBay the user super-glued the channel selector knob so it wouldn't move! WTF? I had to use a small channel lock wrench to break it free. Reading the radio with the programming software it turned out the channel it was stuck on wasn't even programmed. Hummm... I guess someone had a bad day and was trying to make a point. The same would apply to the higher end consumer grade radios. I've seen commercial radios where the cases have been grossly destroyed, then after swapping the guts into a new case the radio still works. In contrast my cheap BTECH tri-band, I use at work for a quick and dirty scanner, I had in my shirt pocket at a local restaurant. It fell out and hit the concrete floor. No apparent external physical damage. However that drop was enough to screw up the audio, it was distorted. The radio was still under warranty so I sent it back for replacement. A high quality commercial radio the case might have gotten dinged up a bit or cracked but it would still work OK.
  9. The attached document is a detailed and technical write up on the DCS system. DPL _ DCS Squelch System.pdf
  10. Look at notes 6 and 7 on page 5 of 7 under the table in the attached document. CTCSS.pdf
  11. All I know about that model is what I've read on the forums and the radio's brochures. I know the Kenwood TK-5210's program very differently than any of the other radios. I got the software to see what it can do but don't own any yet. It seems to use what is refereed to as "Personality" for each frequency. Then each is assigned to a zone in different combinations. I wonder if the Harris radio does something similar?
  12. While you're at it give the Extra a try when you finish the General exam at the test session. You might get lucky.
  13. More like it will be expensive I'm guessing as well.
  14. There are materials you can very easily purchase at the drug, hardware and grocery stores to make "stuff." Some of it is VERY friction sensitive when mixed. For obvious reasons I won't mention what those are and the end results can be catastrophic. I leaned that the hard way from experience.
  15. I know all about that! When I was in middle school and high school I played around with chemistry as a hobby. My younger brother was into model rockets. Those "D" series motors were expensive as a kid to buy. He asked me if I could "refill" them to save some money. Well I came up with a mixture to try out, no it wasn't home made gun powder. All I can say is the rocket "launched" in pieces, bits of cardboard tube, balsa wood and plastic all over the ground. He wasn't happy and NEVER asked me to try to refill one of his used motors again. I had no problem with that either.
  16. GMRS. ^^^^^ $35 and no test. When you figure out where the antenna screws into the back of the mobile radio and what the red and black wire means you're ready to take the Tech Class License exam. It's not that hard.
  17. That was well over 20 years ago. Later when the CW requirement was dropped I sat for the General and Extra exams at the same test session. I passed both on the first try. The wrinkled old VE examiner had a really sour look on his face when he told me the results as I was leaving. I guess he just didn't like people getting getting their Extra ticket without having to pass the hazing CW test anymore. Oh well, that was his problem.
  18. With the radio likely plugged into the cell phone to access the GPS info. If not that then the extra expense of adding in the GPS RX into the radio. To save cost the GPS can be external. Some of the commercial radios have external accessible serial ports that allow such a connection. The ones I've seen the GPS RX is built in to the external speaker microphone, and those aren't cheap!!! https://www.ebay.com/itm/155825555327?hash=item2447ed477f:g:z~kAAOSwxxdlKEkf&amdata=enc%3AAQAIAAAAwIkCHDaeNe%2Fh%2FRcoGuerCnQe3rUMV7MdYj4Cfpaa%2Bj8Pq2US4jQ4EH%2Bxcq%2BIRl7xRC3NtGYt4naNXWFAdiPHoH0ZOe0ADAn3JxujrwUhhfiKP6NnXQS%2FQm60n64jYURsCKJNB2sejsOY6cwGztfIU9NnM%2Frx%2Fznv2YybxJWcja9vP%2B0haJyWtzX%2BQzLbTgNESSx2gTyQx6YRqHrdo3rWGpdx%2BS4NeLIjw1saNZknmmQVxYzq%2Fcax0TneBcO4TYJjKg%3D%3D|tkp%3ABk9SR_zqobTxYg KMC-47-48GPS.pdf
  19. Exactly. I'm puzzled why more people don't get their Tech Class license. My brother took me to a Ham swap that had testing. I never went to one before and was interested to see what they had for sale. Then he just said, out of the blue, I'll pay the testing fee if you just try it. I said OK and winged it. Walked out with a passing grade, no studying. That's how I got started in Ham Radio. It seems more and more people want to add things to GMRS, that deviates further from the FCC's stated purpose for GMRS, as you put it trying to turn it in to a Ham-Lite type service. I think it just comes down to being lazy with excuses why they can't take a few minutes several times a week to study and take the test. They just want to pay the $35 fee, then go out and buy a cheap Chinese radio.
  20. ”What Happens If You Transmit Without An Antenna?” With near 100% certainty nobody will hear you.
  21. That’s a major point for Ham. There are very few digital mode repeaters on VHF. I have radios in my collection for both VHF and UHF, with far more units of the UHF band type for the above reason.
  22. Ham radios don’t have a certification specific for Part 97, the Amateur Radio Service. What you do see is the typical Part 15, which is to ensure the radio can’t receive cell phone frequencies. As others mentioned you can’t have a radio that has GMRS, and certified for Part 95, and Ham frequencies in it at the same time I don’t agree with that opinion. The reason is the Ham 70cm band is NOT an exclusive allocation for Ham Radio. In fact Hams are officially secondary users while various government users are primary where a license is required and the radios require certification. Rereading the GMRS rules regarding radio certification an argument can be made having 70cm band frequencies in the radio along with GMRS doesn’t necessarily mean the rules are violated IMHO.
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