Building a KILLER Ham Repeater (But Not With These)

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So you want to build a simple repeater? Tonight Steve KM9G from ‪@temporarilyoffline‬ and myself talk repeaters, how to build the best system possible, what to buy and tips to save you running into trouble + why Baofeng and cheap mobile radios should be avoided.
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Опубликовано:

23 июн 2022

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Комментарии : 13

@jamiecoburn1231 5 месяцев назад

The front end RF issues are irrelevant if you run Tone/Squelch just like the real repeaters. The radios do have one significant harmonic spike (spurious emissions) that could cause some interference, but generally the big spike ends up in no man's land frequency wise. I have chosen to run inline filters that clean up the emissions to well within specs. I also run some ferrite beads over the communication cable. Lastly I separate the antennas (Slim Jims) with 50 foot runs of quality coax both radios on different bands.. It works plenty well for what we need it for. Your mileage may very.

@siddharth4662 5 месяцев назад

I have a question.... My UHF Repeater for HAM was working absolutely fine for the past 5 years till a couple of days ago it started acting weird.... The repeater now gets triggered only from certain locations... This happened suddenly on its own. Just unable to trouble shoot the issue. Using 2 Motorola PRO5100 radios.

@HamRadioDX 5 месяцев назад

Certain locations - where stations can get in strong? What type of antenna?

@ki4clz Год назад

Have y'all used any Radiax into a Planar Disk Antenna...?

@stevebrodie79 2 года назад

2 meters also has 1.6Mhz split

@Frisky0563 2 года назад

Nice guys

@moozoowizard Год назад

So for a cheap cross band repeater... VHF transmit UHF receive Two baofangs back to back into a $79 aud 60db isolation VHF, UHF duplexer with common going to a dual band flowerpot antenna. The duplexer will kill the baofang suprious emissions as well as isolating the transmitter from the receiver so the receiver isn't desensed. I think you should ask if the frequency is in use before using it.

@HamRadioDX Год назад

Duplexer or diplexer? I think diplexer if you're doing crossband. Might need to sweep it to see what the rejection is like out of band for any spurious emissions.

@moozoowizard Год назад

@@HamRadioDXyou and me both, diplexer. But they are called duplexer in the stores. diamond mx-72h being an example. From the transmitter, a VHF low pass filter to a common point (antenna) and then a high pass to the receiver. The VHF low pass will filter the spurious emissions. It won't be 60db however (30db?) since the high pass filter to the receiver will let what's left at the common point through. Hope I got that all right.