BoxCar

Scadacore will let you model the RF path between your two sites by showing the terrain and earth curvature you need to factor in for antenna height. As far as equipment, the three most important things are: 1) Antenna; 2) Height above ground (AGL) at both sites; 3) radio. If you don't have a clear path, no antenna or radio will work at GMRS frequencies as the signal travels about 15% further than the horizon. Power just means there is more signal in the area, not more distance. The 20 mile distance you estimate would be adequately served with a 25W radio in most instances. Personally, I would choose an Anytone radio over the two you mention as their price/performance is on a par with much more expensive units from other Chinese manufactures. RF Line of Sight - SCADACore

Wide band means the channel is 25kHz wide, but the intelligence (speech) occupies 20 kHz of the 25 available.

FM CB is still new and most of the radios in service don't have the FM capability. I imagine FM will become used more as users either upgrade or replace existing radios.

Good luck on finding one with a Type C - you won't. The best option is for an adapter from the battery to the radio's Tee connector. This will connect to a LiFePO4 15AH battery and the radio. Should be good for a couple days use without heavy sending. FM Mobile "T-style" Power Cable with Powerpoles

Here's another option: https://www.amazon.com/SUPON-Stainless-Cushioned-Universal-Photography/dp/B08RDQMHMK/ref=sr_1_20?dib=eyJ2IjoiMSJ9.7F0MoaqS1hOXuseoMg5yEjYpp_O-zMI5uiSuOpv_Fuk2OfTdof57AzGC2DiJN2Ps9tYlipokl8qTVyhO2GAXghhtsG07MAx29IdW_9oXP289HV-XBsLZZ3bcP5q779s1U3ql4RT8k1qVGGvMOYXnlcy7YSMBnpRadQZCGNGJDt44ZxiEjWfclO4NgkyvRZomTc2pwLghdBkTluuXs2JsIqZ4ghtBk8Z-DAlrjvTstFqtTqoeWWkLwJUBzc_J28W99A5RiyQuPoFS082QeKHlDsq0nXRMXyg6PH7XJj0ewjY.AvkF1II5IvOKkPeMniBdCh2UnX9ERVlRYHFX1jRFq5U&dib_tag=se&qid=1749492042&sr=8-20&srs=18203216011

The FCC may levy the fine, but the money goes to the Treasury department as part of the General Fund. The only parties that quickly pay are those with licenses the FCC grants as they can cancel or deny further application or renewal.

comma, comma, comma

Congratulations on the new license. Yes, General is a fairly easy upgrade but be careful as the toys are expensive.

Have you tried contacting ICOM? Their phone support is very good.

That's why.

My guess - FM CB will not supplant FRS because of the size of the units and their antennas.

I'd contact Maxon for guidance as the connection between the units may not be standard in their standalone units. "

You will still get some interference from the other repeater in overlap areas due to the phasing of the signals. Overall, it will work with the same frequency/tones.

You got it!

About 15% at most. Figure close to 10% but it's all dependent on terrain and weather.

Using HTs, there will be no discernable difference in range for GMRS or amateur frequencies. "

The Signal sticks come with male and female SMA connectors as well as BNC. I use the signal stick on all my HTs.

The spec sheet for the RG400 cable shows a loss of 28.3 dB at 400MHz per 100 meters. RG8X has a 26.25 dB loss per 100 meters at 400 MHz.

Mic Gain

I don't understand what you are trying to accomplish with cross codes. No transmission is private unless it is encrypted. As you stated, anyone. not having a receiver code will receive and understand what is being sent. The only way to have a true, private conversation is either with two tin cans connected with string or on cell phones. NOTHING is private in shared spectrum.

The wattage refers to the power the speaker can handle. What tou need is to match the size and mounting.

Shame on me! I thought even the south end of a north bound horse would realize the example of microwave stations were just that, examples of fixed stations.

As has been stated many times on this forum, it's all about how the transmitter is being used. Two stationary units only exchange signals between themselves. They are not used to contact repeaters or mobile stations nor; do they contact other base stations that communicate to either other base or mobile stations. Perhaps the best example of a fixed station communicating to another fixed station are microwave links. they don't contact repeaters or any mobile or other base stations. they only talk to one other station at a fixed location.

*1 on going for Extra, Being Extra is also the gateway to becoming a Volunteer Examiner for new hams and those wanting to upgrade,

Everything looks right to me but, I don't have one of these radios so I'm not aware of any channel restrictions. l