n1das

The errors in the specs for the Retevis 900MHz radio isn't just a simple mistake or two.  Many of the specs are incorrect and N/A for a FHSS radio.
 
Here's some fact checking....blue text is mine.
 
Overview on Retevis' website:
 
Licensed by the Federal Communications Commission (FCC) and Industry Canada to operate in the license-free 900 MHz ISM (Industrial, Scientific and Medical) band.
Okayyyy.....
 
 
Designed for business operations, the DTR Series radio will free your time from regulatory paperwork and licensing applications and saving radio licensing fees.
 
Are we talking about a Motorola DTR 900MHz FHSS digital radio or a Retevis 900MHz FHSS radio?  The statement looks like a copy and paste from Motorola's documentation.
 
 
Features:
 
1. 900MHz FHSS license free radio
 
2. Digital and analog compatible
 
Support DMR digital and analog two communication modes to ensure that the original analog products smooth transition to digital products to meet different communication needs
 
FALSE.  Can't be both of these at the same time.  An FHSS radio is not compatible at all with a conventional analog or digital radio.  An FHSS radio won't use DMR either.
 
 
3. Digital signaling function
 
Rich calling modes that support DMR protocol, including single call, group call and all call; supports remote inhibit function and other applications
 
FALSE.  It won't be using DMR if it's an FHSS radio.
 
 
4. Interference free, private communications
 
Leverage Frequency Hopping Spread Spectrum (FHSS) technology for more reliable and private communication when compared to standard analog radios.
 
This is TRUE!
 
5. High sound quality
 
This digital two-way radio uses advanced AMBE +2TM voice processing technology to achieve higher quality
 
PARTIALLY TRUE.  The digital audio from a Motorola DTR radio and other digital radios is high quality.  The AMBE+2 vocoder is for a DMR conventional radio, not for an FHSS digital radio.  The Motorola DTRs use Motorola's VSELP vocoder.  VSELP was used in Motorola ASTRO digital radios before P25 Phase 1 which uses the IMBE vocoder.  VSELP was also used by iDEN phones on NEXTEL and other iDEN networks.
 
6. Prominent functional keys
 
Programmable button can be used to quickly access call features like Call All/Page All, to talk to radios without searching through your channel list.
 
The Call All/Page All refers to the Call All Available and Page All Available features in the Motorola DTR600/700 radios and Motorola DLR1020/1060 radios.  The legacy DTR410/550/650 models (now discontinued) don't have the Call All/Page All features.
 
7. Supports the use of repeater
 
PARTIALLY true.  FHSS radios such as the Motorola DTRs are simplex only and occupy the entire 902-928MHz band when they transmit.  There is a repeater available for them ($1500) but it does not function like a conventional repeater.  It consists of a pair of DTR radios running custom firmware and a controller to behave as a repeater.  Each DTR radio uses a different frequency hopset.  DTR radios talking on one hopset can talk to DTR radios on the other hopset using the repeater, and vice versa.  It is one way operation at a time.  The repeater has to be carefully placed to extend coverage areas.  It is usually located where there is some overlap between an existing coverage area and the desired extended coverage area.  The application for this is to extend coverage areas inside large buildings.
 
Some on-site business systems use the 900MHz band, including the Motorola DTR 900MHz FHSS frequency hopping spread spectrum handheld radios, which operate at 1watt ERP transmit power on the 902-928MHz ISM band using frequency hopping digital voice. Current examples include the Motorola DTR600 and DTR700 radios, These radios operate with 50kHz channel spacing and 8-level FSK digital FHSS. 902.525MHz to 927.475MHz coverage.
 
Mostly true.  This statement reads like marketing literature.  An FHSS device operating in the 902-928MHz band is required by FCC 15.247 to use a minimum hopset of 50 frequencies and with a maximum output power of 1 W (+30 dBm).  The Motorola DTRs operate at 830mW (+29.2 dBm) to 890mW (+29.5 dBm).  The measurement of transmitter output power is a conducted measurement made at the antenna connector.  Output power is not specified in terms of ERP or EIRP.
 
The 50kHz channel spacing refers to individual frequencies in adjacent hopsets, NOT individual frequencies within a given hopset.  The Motorola DTRs have 10 hopsets available, consisting of 50 individual frequencies, spaced 500 kHz apart.  The 902-928MHz band has 26MHz of spectrum and gives 52 frequencies spaced 500kHz apart.  The first and last frequency is not used due to being at the band edges so that leaves 50 frequencies available in a hopset.  Frequencies in adjacent hopsets are offset by 50kHz.  The spec'd 902.525MHz to 927.475MHz coverage is correct for the Motorola DTRs.
 
The mention of the 8-level FSK digital modulation for the FHSS operation is correct for the Motorola DTRs and refers to the modulation used on each hopping frequency.  The occupied bandwidth of the 8-level FSK modulation on a given hopping frequency is wider than what a narrowband receiver will accept, even if you were to stop the FHSS and have the transmitter sit on a single frequency. 
 
 
Technical specs on Retevis' website: A mixture of DTR, DMR, and analog specs (LOL). At least they got the DTR freq range right!
 
Main technological specification
 

Frequency range​
902.525 - 927.475 MHz​
Channel Capacity​
30/50CH (up to 200)​
Channel Spacing​
25KHz/12.5KHz​
Operating Temperature​
-25℃~+60℃​
Operating Voltage​
DC 3.7V​
Antenna Impedance​
50Ω​
Microphone Impedance​
2.2KΩ​
Battery​
1800mAh​
Dimension​
128×54×32mm 
(No including antenna)​

Weight​
223g​ 
Freq range:  Correct for the Motorola DTRs.
 
Channel capacity:  Channels in the Motorola DTRs refer the number of public talkgroups or Profile ID talkgroups that can be programmed.  The "up to 200" refers to the maximum number of private contacts that can be programmed for setting up private talkgroups and for private 1 to 1 calling.  This is NOT the RF channel capacity like in a conventional radio.
 
Channel spacing:  Incorrect.  This is the channel spacing for conventional analog and digital radios in wide and narrow bandwidths and is N/A for an FHSS radio.
 
Transmission
 

Output power​
1W​
FM modulation​
25/16K¢F3E 12.5K/8K¢F3E​
4FSK digital modulation​
12.5KHz for data:7K60FXD 12.5KHz for data and voice :7K60FXE​
Vocoder type​
AMBE++or SELP​
Digital Protocol​
ETSI-TS102 361-1,-2,​
Harmonic​
≥70dB​
Signal-to-noise Radio(wide/narrow)​
25K≤-45 dB 
12.5≤-40 dB​

Rated audio Distortion​
≥5%​
Frequency Stability​
±2.5ppm​
Max Frequency Stability​
12.5K≤-40dB​ 
Output power:  Correct.
 
FM modulation:  Incorrect and refers to conventional and analog radios.  N/A for FHSS digital radios.
 
4FSK digital modulation:  Incorrect.  Refers to DMR digital modulation for conventional radios.  N/A for FHSS and the Motorola DTRs which use an 8-level FSK modulation scheme on each frequency in a hopset.
 
Vocoder type:  Incorrect.  AMBE++ is used by DMR.  SELP = ?  The Motorola DTRs use Motorola's VSELP vocoder.
 
Digital Protocol:  Incorrect.  The ETSI standard listed is for DMR.  N/A for FHSS analog or digital.
 
SNR (wide/narrow):  Incorrect and N/A for FHSS.  The spec is for conventional radios.
Reception
 

Sensitivity (12dB SINAD)​
Analog 25K≤-121dB 12.5K≤-119dB​
Digital 0.3μV/BER5%​ 

Signal-to-noise Radio​
25K≥45 dB 12.5K≥40dB​
Adjacent channel selectivity​
25K≥65 dB 12.5K≥60dB​
Intermediation (Wide/ narrow)​
25K≥60 dB 12.5K≥55dB​
Spurious Response Rejection​
≥65 dB​
Audio power​
1W​
Audio distortion​
<5%​
Frequency Stability​
±2.5ppm​
Battery life under 5-5-90duty​
14.8 hours(with 1600mAh Li-ion battery)​
20.9 hours(with 1600mAh Li-ion battery)​ 
 
Sensitivity:  Incorrect.  The spec listed is for conventional wide/narrow operation.  N/A for FHSS.
 
SNR:   Incorrect.  The spec listed is for conventional wide/narrow operation.  N/A for FHSS.
 
Adjacent channel selectivity:  Incorrect.  The spec listed is for conventional wide/narrow operation.  N/A for FHSS.
 
Intermodulation  (intermediation LOL):  Incorrect.  The spec listed is for conventional wide/narrow operation.  N/A for FHSS.
 
Spurious Response rejection:  N/A for FHSS.
 
The Bottom line:  EPIC FAIL.  Too many glaring mistakes with specs which are N/A and incompatible with FHSS operation.  I have to call BS here and say this radio is Vaporware.
 
There were some analog 900MHz FHSS radios made by TriSquare a number of years ago.  These were the eXRS radios and were marketed as an alternative to FRS.  They operated on 900MHz and used FHSS.  The similarities with the Motorola DTR radios ended there.  The eXRS radios were analog and used a hopset of 50 frequencies per FCC 15.247.  They spent 400ms on each frequency in the hopset, the maximum accumulated dwell time allowed per FCC 15.247.  This meant they hopped very slowly and you could sort of monitor them with a scanner if it was fast enough and only scanning the specific freqs in the hopset.  Using a divide and conquer approach by employing multiple scanners with each scanner covering a portion of the hopset worked better.  You would hear the audio ping pong between multiple scanners but at least you could sort of monitor the eXRS radios.  The eXRS radios were notorious for synchronization problems and took a long time to re-sync if synchronization was lost.  The bottom line is these radios were total JUNK and the company is out of business.  OTOH, the Motorola DTRs are professional quality and 100% digital and packed with features and work amazingly well.  The DTRs spend no more than 90ms on any given hopping frequency, which works out to around 11 hops/second.  The fact that the DTRs are completely scanner proof comes as a bonus.
  I have been on the 902-928 band on 33 cm ham repeaters.  The Motorola DTRs operate perfectly fine and coexist with everything else transmitting in the 902-928MHz band.  The FHSS operation allows them to peacefully coexist with everything else in the band without interference. Unlike conventional radios they are VERY difficult to jam due to the FHSS operation.

This radio is Vaporware and not cheaper.  The specs posted on Retevis' site contain many red flags (can you spot them all?) and contain conflicting and mutually exclusive information.  The published specs resemble a hilarious copy and paste of specs from multiple sources.  Epic FAIL.  The minimum order quantity (MOQ) is 200 at $60 each ($12k total).  I posted about this radio in the RadioReference.com forums.
https://forums.radioreference.com/threads/retevis-900mhz-license-free-radio.413954/
 
I own a small fleet of Motorola DTR700 portables and a small fleet of DTR650 portables.  I previously owned a small fleet of DLR1060 radios which I later sold to a friend of mine for his business.  At first he wasn't sure what he was going to do with them except may use them for radio rentals.  Now he and his employees use them all the time around the office and at job sites because they work so well.
 
Don't underestimate a FHSS digital radio on 900MHz just because of the 1W transmitter power. My range record with a pair of 900MHz Motorola DTR650 FHSS digital portables transmitting at 890mW (+29.5dBm) stands at 12 miles from the Cocoa Beach Pier in Cocoa Beach FL to the top of the steps from the parking lot leading down to Hightower Beach in Satellite Beach FL. The top of the steps are about 30 ft or so above sea level. There is a bit of coastline in the way so it's not entirely line of site. Myself and a friend of mine who helped me test the DTRs also had 4W UHF Part 90 portables with us which we had on GMRS to compare to. (We are both GMRS licensed.) We were able to communicate on GMRS simplex but the received signal strength was noisy and scratchy and we each had to find a hot spot and stay there in order to communicate. The DTRs were crystal clear because of the digital modulation and overall was more reliable and finding a hot spot for them was less critical.
 
Motorola DTRs on 900MHz are capable of outperforming VHF and UHF conventional portables on simplex. Where the DTRs beat VHF and UHF conventional portables is when operating inside buildings due to buildings being much more open at 900MHz compared to 150MHz and 450MHz. Where the 900MHz DTRs blow all others away on simplex is when operating aboard cruise ships. People who have used DTRs aboard cruise ships report having full ship coverage on all decks compared to a pair of 4W UHF portables on GMRS simplex which had trouble penetrating more than about 2 decks. When operating aboard a cruise ship, you are essentially operating inside a compartmentalized metal box. The shorter wavelength signals at 900MHz reflect in an out of the many nooks and crannies of the ship where longer wavelength signals at VHF and UHF won't. The many reflections actually help with the FHSS operation because individual hot spots and dead spots also hop around as the frequency hops. The FHSS operation effectively stirs the modes so to speak.
 
I never got my DTRs to set any range records.  I got them for reliable local on-site simplex type use with family and friends.  They are my high quality professional digital replacement for GMRS/FRS and MURS for local simplex type use.  They outperform UHF Part 90/95 conventional portables on simplex and totally blow FRS away.  A coworker once asked me why not just use FRS? My answer was that I have already been doing that since FRS was created in 1996 and longer than that as a GMRS licensee since 1992 with Part 90/95 commercial gear. I want a secure, high quality digital solution that is higher quality and more professional than FRS. The fact that they are totally scanner proof comes as a bonus. They are not monitorable on any consumer grade receiver (scanner) so don't even bother trying.
 
I hardly use GMRS/FRS at all any more because I migrated my local on-site simplex type use with family and friends to the DTR radios on 900MHz.

This radio is Vaporware and not cheaper.  The specs posted on Retevis' site contain many red flags (can you spot them all?) and contain conflicting and mutually exclusive information.  The published specs resemble a hilarious copy and paste of specs from multiple sources.  Epic FAIL.  The minimum order quantity (MOQ) is 200 at $60 each ($12k total).  I posted about this radio in the RadioReference.com forums.
https://forums.radioreference.com/threads/retevis-900mhz-license-free-radio.413954/
 
I own a small fleet of Motorola DTR700 portables and a small fleet of DTR650 portables.  I previously owned a small fleet of DLR1060 radios which I later sold to a friend of mine for his business.  At first he wasn't sure what he was going to do with them except may use them for radio rentals.  Now he and his employees use them all the time around the office and at job sites because they work so well.
 
Don't underestimate a FHSS digital radio on 900MHz just because of the 1W transmitter power. My range record with a pair of 900MHz Motorola DTR650 FHSS digital portables transmitting at 890mW (+29.5dBm) stands at 12 miles from the Cocoa Beach Pier in Cocoa Beach FL to the top of the steps from the parking lot leading down to Hightower Beach in Satellite Beach FL. The top of the steps are about 30 ft or so above sea level. There is a bit of coastline in the way so it's not entirely line of site. Myself and a friend of mine who helped me test the DTRs also had 4W UHF Part 90 portables with us which we had on GMRS to compare to. (We are both GMRS licensed.) We were able to communicate on GMRS simplex but the received signal strength was noisy and scratchy and we each had to find a hot spot and stay there in order to communicate. The DTRs were crystal clear because of the digital modulation and overall was more reliable and finding a hot spot for them was less critical.
 
Motorola DTRs on 900MHz are capable of outperforming VHF and UHF conventional portables on simplex. Where the DTRs beat VHF and UHF conventional portables is when operating inside buildings due to buildings being much more open at 900MHz compared to 150MHz and 450MHz. Where the 900MHz DTRs blow all others away on simplex is when operating aboard cruise ships. People who have used DTRs aboard cruise ships report having full ship coverage on all decks compared to a pair of 4W UHF portables on GMRS simplex which had trouble penetrating more than about 2 decks. When operating aboard a cruise ship, you are essentially operating inside a compartmentalized metal box. The shorter wavelength signals at 900MHz reflect in an out of the many nooks and crannies of the ship where longer wavelength signals at VHF and UHF won't. The many reflections actually help with the FHSS operation because individual hot spots and dead spots also hop around as the frequency hops. The FHSS operation effectively stirs the modes so to speak.
 
I never got my DTRs to set any range records.  I got them for reliable local on-site simplex type use with family and friends.  They are my high quality professional digital replacement for GMRS/FRS and MURS for local simplex type use.  They outperform UHF Part 90/95 conventional portables on simplex and totally blow FRS away.  A coworker once asked me why not just use FRS? My answer was that I have already been doing that since FRS was created in 1996 and longer than that as a GMRS licensee since 1992 with Part 90/95 commercial gear. I want a secure, high quality digital solution that is higher quality and more professional than FRS. The fact that they are totally scanner proof comes as a bonus. They are not monitorable on any consumer grade receiver (scanner) so don't even bother trying.
 
I hardly use GMRS/FRS at all any more because I migrated my local on-site simplex type use with family and friends to the DTR radios on 900MHz.

No special or "right equipment" is needed.  If a radio has DPL capability, it already has inverted DPL capability.  With one exception (D172N), every code in the table of 104 standard DCS codes has its inverse somewhere in the table.  For example, codes 125 and 365 are inverses of each other.  D125I is the same as D365N and vice versa.  I've been using 411 (normal) (D411N) and its inverse is 226 (normal).  D411I corresponds to D226N and vice versa.  Normal and Inverted simply refers to the polarity of the DCS waveform. By convention, a logic 1 is represented by a positive carrier shift and a logic 0 is represented by a negative carrier shift.  This is considered Normal polarity for a DCS waveform.
 
A DPL word is a 23-bit cyclic Golay pattern with a 12 bit codeword (23,12).  The 12 bit codeword is formed from the 12 least significant bits of the 23 bit DPL word.  The 12 bit codeword consists of a fixed octal 4 (100 binary) followed by the 3 octal digits that you can program.  Notice that the available DPL codes are octal (base 8) numbers.  The 11 most significant bits are error correcting code bits generated by the Golay algorithm from the 12 codeword bits. The 23 bit DPL word is transmitted repeatedly over the air at 134.4 bits/second.  The least significant bit is transmitted first, resulting in the DPL word being played out backwards over the air.
 
Here is the best technical description of DCS/DPL operation that I've been able to find:
http://www.onfreq.com/syntorx/dcs.html
 
Also check out:
https://wiki.radioreference.com/index.php/DCS
 
In my case of dealing with a repeater jammer who didn't have DPL capability and didn't have a clue and thought he knew all there is to know about radio, DPL also stands for "Definitely Prevents Losers" LOL.

If FRS works for them and don't want to upgrade to business radios, then that's perfectly OK.  I am OK with business use of FRS.  Most business users of FRS are casual users of 2-way radio and don't need expensive business radios and the hassle with FCC licensing that goes with it.  Given that business use of FRS is 100% legal, it helps fill this niche, sort of like what PMR446 does in Europe.  Accommodating casual business users of 2-way radio as FRS does helps keep the Part 90 Industrial/Business (IB) pool frequencies more available for licensed users who really need those frequencies.
 
I recently had a paving crew resurfacing one of the streets next to my house and the flaggers were using FRS.  I saw them using FRS and I quickly found them on FRS channel 1 (462.5625).  The flaggers were only about 100 feet or so apart and FRS worked fine for them.  What was different about them was they behaved themselves and strictly used the radios for what they were meant for.  They actually sounded professional, unlike the usual sewer mouth chatter you normally hear from flaggers on FRS.

If FRS works for them and don't want to upgrade to business radios, then that's perfectly OK.  I am OK with business use of FRS.  Most business users of FRS are casual users of 2-way radio and don't need expensive business radios and the hassle with FCC licensing that goes with it.  Given that business use of FRS is 100% legal, it helps fill this niche, sort of like what PMR446 does in Europe.  Accommodating casual business users of 2-way radio as FRS does helps keep the Part 90 Industrial/Business (IB) pool frequencies more available for licensed users who really need those frequencies.
 
I recently had a paving crew resurfacing one of the streets next to my house and the flaggers were using FRS.  I saw them using FRS and I quickly found them on FRS channel 1 (462.5625).  The flaggers were only about 100 feet or so apart and FRS worked fine for them.  What was different about them was they behaved themselves and strictly used the radios for what they were meant for.  They actually sounded professional, unlike the usual sewer mouth chatter you normally hear from flaggers on FRS.

If FRS works for them and don't want to upgrade to business radios, then that's perfectly OK.  I am OK with business use of FRS.  Most business users of FRS are casual users of 2-way radio and don't need expensive business radios and the hassle with FCC licensing that goes with it.  Given that business use of FRS is 100% legal, it helps fill this niche, sort of like what PMR446 does in Europe.  Accommodating casual business users of 2-way radio as FRS does helps keep the Part 90 Industrial/Business (IB) pool frequencies more available for licensed users who really need those frequencies.
 
I recently had a paving crew resurfacing one of the streets next to my house and the flaggers were using FRS.  I saw them using FRS and I quickly found them on FRS channel 1 (462.5625).  The flaggers were only about 100 feet or so apart and FRS worked fine for them.  What was different about them was they behaved themselves and strictly used the radios for what they were meant for.  They actually sounded professional, unlike the usual sewer mouth chatter you normally hear from flaggers on FRS.

Sounds like a reasonable question. I just don't know that everyone that is licensed and has a repeater, knows that is the universal travel tone. Especially since the group who started OPI is long gone, there are no published stands and no knowledge base, beyond some operators keeping the tradition and knowledge alive.

I admit this sounds like a fair question to ask.
 
Perhaps certain protocols or best practices could be established regarding this.
 
Michael
WRSH965
 
 
Sent from my iPad using Tapatalk

I am simply asking an open question here for anyone, not an argument.
 
So everyone licensed for GMRS have an understanding that 141.3Hz PL tone is an open travel PL Tone.
 
So why do people use that tone on a repeater they list here and ask for an email contact prior to use of repeater, if I am traveling, I cant possibly expect a response back within minutes right?  If you want it selectively used wouldn't you then use a tone OTHER THAN the well known travel tone 141.3Hz?  So...  Just asking.  I do have a repeater, no longer on air as I live in a very low spot and it didn't even cover my small town from my home. 
 
I guess what I am saying is if you don't want your repeater to be an open access repeater for ALL then wouldn't you select a PL tone other than the common travel tone?
 
Just asking...
 
r/
Glenn

Hi, first post on myGMRS and long time lurker.  Ham licensed since the 1980s and GMRS licensed since 1992.
 
This brings back memories of some dealings I had with a jammer 15-20 years ago.  I had a GMRS repeater at home for local area chit chat and the jammer liked to target myself and a friend of mine.  We were the only users of the repeater.  The repeater was on DPL instead of PL which annoyed the jammer to no end because his antiquated equipment only had CTCSS/PL and he didn't have a clue about DCS/DPL.  He also liked to target us when on local simplex since he lived in my friend's neighborhood.  I lived several miles away so the repeater was not local to the jammer.  The jammer was legendary for jamming on GMRS, FRS, and CB19...wherever he could get attention and hold an audience.  He mostly stayed on CB19 because he managed to hold the largest audience there.  He was legendary in the local CB, ham and GMRS communities and the FCC also dealt with him a few times.  We were largely successful at ignoring the jammer on GMRS but he persisted.  We continued to use GMRS legally like the jammer was not there, never acknowledging his existence.
 
We also brought the fight to him.  The repeater was at home and I lived several miles away so I took the repeater mobile and my friend rode with me in the car while we chatted on the repeater with our portables.  We were separated by the distance between us in the front seats and the repeater was on the back seat, powered by the car and with a UHF mobile antenna on the roof.  The repeater all by itself worked excellent in the mobile installation.  We were in my friend's neighborhood and the jammer was just down the street from us.  We were so close to the repeater that the jammer couldn't make a dent in our communications, no matter how hard he tried. We were close enough to the jammer that he could hear the repeater on a scanner while transmitting to see if he was successful at jamming us (he wasn't).  I was also listening on the repeater input and heard him try multiple CTCSS/PL tones to try to key the repeater (he couldn't).   I also later heard him viciously ranting on CB19 about being unable to get into the repeater.  He finally gave up trying to bother us on the repeater.
 
What worked best was to never let him see us sweat and make him think he was having zero impact on us.
 

I know this is going to sound strange, but I have had to deal with this several times in the past. Fixing it on their end, psychologically, usually works best.
 
First, never do or say anything on the air that would give the troublemakers an indication that they are impacting you. That is what they want... to know they are trolling you.
 
The next thing to do is to make them think they are having zero affect on you. On repeater systems, We have gotten 3 or 4 people together in a parking lot and all started talking to each other on the mobiles, via the repeater. Even though jammers were jamming the repeater, we can all hear each other directly and just keep talking on the radio, having a full convo. Whenever the jammer lets his/her mic up and hears everyone talking as if nothing is happening, they start to realize that they are not impacting you. Then, they give up and go away.
 
We do that on HF all the time too. We get some knucklehead try to cause interference on frequency, but most of the guys in the club are friends, we we get on the phone and talk over the phone in a conf call and on the radio at the same time. Me and my buddy Danny only live 35 miles apart and both have 1,500 watt stations. When someone tries to interfere with us, we just talk right over them.
 
Using the methods I mention... usually 2 or 3 minutes of not getting the attention they want, and get get bored and go away. Lot easier than calling the FCC, who rarely does anything.