SteveShannon

Set your TX frequency to 467.600 MHz. Your receive frequency is as you’ve already listed.

Step defines the spacing between frequencies when in VFO mode. Because GMRS has predetermined channels set in regulation it really doesn’t apply but if it’s set too high it can block entering an approved frequency from the front panel. Set it lower than 6 kHz.

Given that people are reticent to report such things and the FCC’s dismal record at enforcement, nothing will probably ever happen about that, but honestly, their range probably is no better than that of your repeater.

I’m not sure how you would ever get a full 50 watts out of the duplexer while remaining within GMRS regulations. Regulations mandate a max of 50 watts out of the transmitter and there are always insertion losses through a duplexer.

Speaking of someone not having anything better to do…

Here you go:

I’m guessing the OP ordered it, then shifted into overdrive while waiting for it to arrive. Once he receives it he’ll hopefully notice the directions. On the other hand if he took it out of the box and shitcanned the box without reading it, he’s going to suffer some serious ribbing.

No problem; I wasn’t criticizing you, just offering a way to correct without creating a new post.

You can simply edit your original post by clicking on the three dots in the upper right corner and choosing edit.

Maybe a CR.

Well, no; that $20 retail price was probably $6 when purchased by the importer. So a 25% tariff would be $1.50 which could easily be absorbed or partially absorbed rather than passed through. A 100% tariff might add $3 to the price.

437.815 to 437.785 is 30 kHz, much less than 1 MHz. So you’re shifting +/-15 kHz not MHz.

I’m pretty sure you don’t mean 437.800 +/- 15 MHz. https://www.qsl.net/ah6rh/am-radio/spacecomm/doppler-and-the-iss.html

No, but they can license the other platform for $15 dollars for the software download rather than paying full price ($25 - corrected price, thanks @WRYZ926).

People successfully talk to the International Space Station using a five watt handheld on 70 cm. That’s a couple hundred miles.

I didn’t collect; I accumulated.

I wanted the Man from U.N.C.L.E. Special myself, which led me into a 60 year fascination with firearms.

Maybe, but if you’re willing to incur $20,000 in legal fees and loss of that nice 1911 (and possibly prison time) to defend yourself after brandishing a firearm (or worse, shoot someone) to protect a $100 radio you’re not thinking very well. Plus, you’ve now broadcast in a public forum that you’re willing to use a firearm with less than self defense as the reason.

The OP is looking for a way to secure his radio when his vehicle is parked, not hang around and guard it.

The world is better because of you.

A gain of 11.9 db is more than twice the gain of 8.5 db when measured in the direction of the gain. So even though 10 less watts enters the antenna, in the direction of the gain twice as much RF power is focused. However, if you need an antenna that is less focused, more wide in its propagation pattern, a lower gain antenna might help. I’m curious what kind of coax you used when you measured the two different antennas. Honestly I would try both antennas to see which one works better. The calculations give an indication but real world usage is better.

Not necessarily. But in the bottom portion of your post the higher gain antenna obviously has 70 or 80% more EIRP, so I’m curious why you mention 10-13 higher watts from the lower gain antenna?

Is it because of the lower SWR that you assume the lower gain antenna would be better? That little difference in SWR isn’t as likely to make a difference as the gain, assuming the gain is the right direction.

Under the current interpretation of fcc rules it would be difficult to accomplish. Welcome!

A person could always put in a redundant fuel pump: https://aeromotiveinc.com/products/phantom-dual-340?srsltid=AfmBOor_5fPdAREqudFOxZ3UClS5hRN0wx6qRlsMga1EIxl3QkZP9ns2