JLeikhim

I think the Channel 19 was a truckers channel long before 40 channel radios were mainstream. So i dont think being at center of the band was the reason. Sent from my SM-T350 using Tapatalk

Has the temperature changed where the repeater is located? Sent from my SM-T350 using Tapatalk

You have one of the following: Bad feedline, antenna or connector causing wideband noise when transmitting. Loose connector in one of the above. A noise source nearby like a computer or monitor that is so close to the antenna that it reradiates the TX signal plus wideband noise. Loose mounting hardware on the antenna or mast. Nearby interference like an AM station or FM station mixing with TX and reradiating the RX frequency. This should be considered last and not at all if it works on a different antenna. Duplexer out of tune. Think about what might have changed... Sent from my SM-T350 using Tapatalk

You would have had better results with a metal ammo box. An ideal ground plane woukd be an aluminum disc about 13 inch diameter. You can try lining the box you have with aluminized HVAC duct tape. Sent from my SM-T350 using Tapatalk

Proper Wideband FM sounds much better than the IMBE and AMBE vocoders. I really dont see the advantage for GMRS. Sent from my SM-T350 using Tapatalk

Same as channel 3 for many cheap radios. These are FRS radio guidelines. Sent from my SM-T350 using Tapatalk

Nor is tone 07 the same in all radios, Sent from my SM-T350 using Tapatalk

A countrywide option would be to use FRS channel 9, tone 11 or 911. Sent from my SM-T350 using Tapatalk

Wake me up when Baofenshuii has a shortage of flashlight LED s and can no longer offer that "feature" either. Sent from my SM-T350 using Tapatalk

Has anyone actually tested one of these Midland radios after programming "wide band" with Chirp or any other software? By test, I mean looking at the deviation of the transmitter with a deviation meter and measuring receiver acceptance bandwidth. I think that folks are being fooled by a check box in the software that does nothing. Sent from my SM-T350 using Tapatalk

You would be better off buying a Kenwood TKR850 repeater Sent from my SM-T350 using Tapatalk

When those Bridgecom repeaters came out, I could not verify their marketing claim that they were actually certified for part 95. They were not at the time. Maybe now. They seemed dishonest in their business practices to me. Sent from my SM-T350 using Tapatalk

The Chinese radios lack an effective IF FM Limiter stage so they are susceptible to all sorts of multipath induced noise. Sent from my SM-T350 using Tapatalk

Both schemes apply 50% ( less resistive losses ) power to each antenna. Sent from my SM-T350 using Tapatalk

You can test the effects of double vocoding rather easily by connecting a simplex DMR or P25 radio to an Argent Data Systems simplex repeater. The simplex repeater will record demodulated digital audio (analog) and then repeat the analog signal through the transmit vocoder. In choosing a simplex repeater, choose the highest sampling rate as not to introduce distortion . While one can make a duplex P25 repeater from two radios, making a duplex DMR repeater is a huge challenge as in the duplex mode, subscribers require synchronizing with the repeater transmitter. Sent from my SM-T350 using Tapatalk

I was hoping they were squirting ANI/ALI along with caller ID these days. I have noticed a huge delay on answering calls these days on my VoIP residential line. Also some long string of numbers along with phone number on my phones caller ID. It would be nice to be able to discern the spoofed calls, I suppose mostly from India. I am familiar with older models, Zetron model 48B, 38 etc tone panels. Also 6/26 fire station alerting. A great company with niche products.

What model ALI? What else might one see in the data? I get a lot of robocalls and it would be interesting to see what they cannot spoof.

FYI. The info I sent you was for Systems Saber, not Astro Systems Saber. There is an Astro Saber, but it is a different animal and not Part 95 certified. The Systems Saber is wideband only so there are not as many specs. The standards were TIA-603A. And it has no GPS or Bluetooth etc. Its just a radio! If you use a modern lithium ion battery with it you can attain 5500 mAh and the radio is nearly 6 oz lighter. the duty cycle at 5/5/90 is about 20 hours. There are 2200 mAh lithium ion batteries that are shorter and give about 9 hours.

That is one of the better looking radios. All the rest are shaped like worn bars of soap.

The earlier Systems Sabers and analog Sabers are modular so you can change band splits by swapping a few modules and retuning. I have done this with several surplus govt split IRS radios. The Astro Saber is a bit too tall for my taste. I have a couple of those but prefer the Systems Sabers. I wish Motorola had continued with the Saber form factor. The later Astro XTS and APX radios are sort of bizarre and bulbous in styling. Sent from my SM-T350 using Tapatalk

@gman1971 Please see Attached Motorola Systems Saber catalog, specs and FCC Grant for part 95. Cant wait to see how it compares. Sorry for the delay. Under the weather here! 593125590_SYSSABERCATALOGSHEETR3_4_136A.pdf SYS SABER SPECIFICATIONS.pdf SYS SABER FCC GRANT AZ489FT4767.pdf

Lots of info here. http://www.onfreq.com/syntorx/ I recently revived 3 of the low band radios and they are fine. Even have DES-XL capability with infinite code retention. I had Andy Brinkley , Brinkley Electronics in North Carolina program my code plugs. You will have to determine which firmware you have and he will burn you code plugs to match 32, 64 or 128 channels. The control head needs an 8K memory for 64 or 128 channels. In my case I bought a 128 channel upgrade. The price was reasonable. If you are doing this for GMRS you can get by with 32 channels and 16 tone MPL. There is a simplex button DIR for talk around. GMRS is wideband unless you drink the Midland koolaid . Set the power to 50 watts and you will be fine. Orange and green wires behind control head are for ignition sense. There should be a white or clear molex connector for the speaker. If this doesn't look quite right, you may have a siren cable for a DEK unit, not a radio cable. Check you part numbers on the onfreq website before powering it up. Sent from my SM-T350 using Tapatalk

Can you add the UHF Systems Saber? I know it is a unicorn, but it is probably one of the few with Part 95 certification. If you need a catalog sheet I will send you one. Sent from my SM-T350 using Tapatalk

My read is that TPO is where the transmitting equipment meets the feed line. If transmitting equipment includes harmonic filter, circulator and a duplexer,, so be it, no problem. As long as the TPO is 50 watts. The Motorola MSF5000 station integrated all of those optional components making a 100 watt station deliver 75 at the connector on the cabinet. This confused technicians who would see that the station was spec d at 100 watts without those internal options, and so they would turn the power up to squeeze 100 watts from the cabinet and that would make the PA run much harder. Sent from my SM-T350 using Tapatalk

True, they would work far much less sucky on the moon or way out in the boondocks. In fact, Midland backs up their 32 mile claim for their GMRS radios by testing them line of sight from a huge hill way out in some wide open rural area. The lawyers are happy, but folks who now have those radios, question the claim when they barely get a half mile in a suburban area. I have some ICOM IC4008A FRS radios that are superhet, but very basic design with little preselector filtering, just a simple coil. Better than an SOC design. They work very well out in the National Parks. But around town, not so much. I keep them because they are easy to use and the AA batteries last days when camping. My wife and son carry them because they are small. A radio is a tool like anything else. A battery operated drill from China sold at Harbor Freight might get by for the casual home user. But I have a Japanese Makita drill I purchased in 1980 for $300 in 1980 dollars , that has outlasted all of the cheap drills I bought in the meantime. For $35 You are not getting much of a drill. Same for cheap radios. Sent from my SM-T350 using Tapatalk