Due to the higher power output he will probably cause interference to licensed GMRS users.
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BaoFeng Spectral Purity IMD Testing
- Thread starter NearFieldOperator
- Start date
Another question(s). …has anybody here ever actually experienced real life interference from the radios mentioned? Has it impeded or impacted your or someone you know‘s ability to communicate?…Especially, has it affected public service communications? If so, then there is a big problem, if not, all we are looking at are figures on a chart. I know the FCC is supposed to regulate this and take action, but how many complaints have been filed and was any action taken? I am not asking to start a war but asking to gage the true seriousness of this in the real world.
The FCC's amateur radio rules specify spurious emission limits. Operating a transmitter that exceeds those limits is a violation of FCC rules.
The FCC's rules for GMRS, FRS, or Part 90 also require that transmitters used in those services have an FCC equipment authorization for those services.
Those of us who have amateur radio, GMRS, or Part 90 licenses agreed to abide by the FCC's rules.
If you think these rules are unfair or unrealistic, then you are free to petition the FCC to change them.
Probably none. If an out of spec radio is used on 2m amateur its second harmonic will fall in the UHF military band and the third harmonic will be in the UHF amateur band. If used on UHF amateur the second harmonic will fall mostly in the 800MHz cell phone band. GMRS second harmonic would fall in the 900MHz amateur and LMR band.
- Joined
- Dec 19, 2002
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Not willing to look at current radios and rather than *possibly" outdated information? I was serious, I have seen posts over years, but those are stale. I remember when many said the same thing about Japanese cars. I own some recent models, along with ICOMs, Kenwoods, and Yaesu. All have advantages and disadvantages. I consider it very possible that without Baofeng and similar inexpensive radios that the the amateur radio service would die. (By the way, my most expensive radio was $13,000, so I am not cheap.) Also, I once attacked a certain brand receiver based on experience. Some claimed my experience was outdated. So I bought one to find it had the best audio I had ever hear on any radio even to today and some other nice features.
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AK9R…why would I think the rules are unfair or unrealistic? I did not say that. I do not mean to degrade or ignore the rules since the radios mentioned comply. I have been a ham for many, many years and in spite of some other hams I know, I have obeyed and complied with every rule and even kept up to date.
Maybe it was not clear but my question was meant to be for me to gain knowledge and not based on ignoring rules but rather have there been any reports of type accepted radios causing the types of spurious interference referred to and what was done about it? It’s great to have an FCC with multiple rules, but without examples of enforcement where needed why have the rules?
I know for a fact when I got my license back in the 80s I had many examples of hams and others getting fines when the FCC actually went out on the road and monitored. There used to be a column in QST magazine with multiple enforcement examples, now occasionally I see something mentioned and it is usually a major issue.. I hope I am wrong and maybe I am just missing it.
Also, dlwtrunked, you are 100% right..in my local area at least 2 people I know got their B radio because they could not afford a $200 radio and they are great contributing, young hams which are needed. The radios are legal, they work and in this case help expand a somewhat dying hobby. Per your other comment, I too, have both $1000++ radios and $25 ones..the fun is not necessarily in the price but rather the radio!
Maybe it was not clear but my question was meant to be for me to gain knowledge and not based on ignoring rules but rather have there been any reports of type accepted radios causing the types of spurious interference referred to and what was done about it? It’s great to have an FCC with multiple rules, but without examples of enforcement where needed why have the rules?
I know for a fact when I got my license back in the 80s I had many examples of hams and others getting fines when the FCC actually went out on the road and monitored. There used to be a column in QST magazine with multiple enforcement examples, now occasionally I see something mentioned and it is usually a major issue.. I hope I am wrong and maybe I am just missing it.
Also, dlwtrunked, you are 100% right..in my local area at least 2 people I know got their B radio because they could not afford a $200 radio and they are great contributing, young hams which are needed. The radios are legal, they work and in this case help expand a somewhat dying hobby. Per your other comment, I too, have both $1000++ radios and $25 ones..the fun is not necessarily in the price but rather the radio!
Routine issues are reported in the Volunteer Monitor Report posted in QST each month. You can see the last two months' reports here: Volunteer Monitor program
Thanks! Great, sorry I missed that, and a very good idea, but it would be nice to see all the final results along with actual fine amounts where applicable and I notice that no names or call signs are mentioned…if you break the rules/laws and it is proven then this information should be provided to possibly dissuade others.
Yes, I will stop since I know this is off topic..should go to amateur radio forum.
Yes, I will stop since I know this is off topic..should go to amateur radio forum.
- Joined
- Dec 19, 2002
- Messages
- 2,234
The 3rd harmonic of one the local VHF repeaters input frequencies when using a Yaesu FTM series radio routinely shows up interfering with the output frequency of one of the local UHF repeaters. This is also seen on a spectrum analyzer which I often leave running. This also prevents putting both repeaters on the "two sides" of such as Yaesu transceiver. That is the only time that I am aware of locally of any radio interference from an amateur radios harmonics.
