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update with more recent experience
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Ale HB9TST
Ale HB9TST
  • 121
  • 5

On which bands are you going to operate? I regularly operate on HF bands (160-10 meters) and never have any interference with the WiFi signal. Except if you operate on microwaves (e.g., 13 cm band, which overlaps with the frequency range used by 802.11b/g/n), I would not expect any interference on the WiFi.

However, there is something else to care about: ADSL/VDSL modems use frequencies in the HF range to modulate the internet data on a analog telephone line (which uses unshielded cables). If your output power is high enough, and the telephone line picks up enough signal, transmitting might prevent your Internet connection from working. My ADSL modem (actually I tried 3 different models... all of them had some issue) almost instantly loses connectivity if I operate on 3.5 MHz with more than 10-15 W of output power — but the telephone line has a very long cable inside the apartment, which might pick up a lot of RFI. I know other ham radio operators who don't have any problems with ADSL and have far more output power than me... so this depends a lot on your local setup. And if you're going to operate in VHF/UHF, I wouldn't expect any interference on ADSL. Cable modems (as they use shielded cables for transmission) will probably be less prone to interference with HF, but I don't have any direct experience with that.

Update: I've switched from ADSL to VDSL (to increase Internet bandwidth, fiber was unfortunately not possible), and moved the modem to the living room, around 10 meters farther from the transmitter than before. The telephone line now goes straight to the modem, and the line branch passing near the transmitter has been disconnected. As a result, even operating with the linear amplifier (~500 W output) on 3.5 MHz (or on any other RF band) does not affect the Internet connection in a significant way any more. I didn't look at the line quality parameters to see if there's any effect, but the connection stays up and the throughput doesn't seem to really change during transmission. I occasionally had disconnections while tuning the linear amplifier, but it only happens once in a while.

On which bands are you going to operate? I regularly operate on HF bands (160-10 meters) and never have any interference with the WiFi signal. Except if you operate on microwaves (e.g., 13 cm band, which overlaps with the frequency range used by 802.11b/g/n), I would not expect any interference on the WiFi.

However, there is something else to care about: ADSL/VDSL modems use frequencies in the HF range to modulate the internet data on a analog telephone line (which uses unshielded cables). If your output power is high enough, and the telephone line picks up enough signal, transmitting might prevent your Internet connection from working. My ADSL modem (actually I tried 3 different models... all of them had some issue) almost instantly loses connectivity if I operate on 3.5 MHz with more than 10-15 W of output power — but the telephone line has a very long cable inside the apartment, which might pick up a lot of RFI. I know other ham radio operators who don't have any problems with ADSL and have far more output power than me... so this depends a lot on your local setup. And if you're going to operate in VHF/UHF, I wouldn't expect any interference on ADSL. Cable modems (as they use shielded cables for transmission) will probably be less prone to interference with HF, but I don't have any direct experience with that.

On which bands are you going to operate? I regularly operate on HF bands (160-10 meters) and never have any interference with the WiFi signal. Except if you operate on microwaves (e.g., 13 cm band, which overlaps with the frequency range used by 802.11b/g/n), I would not expect any interference on the WiFi.

However, there is something else to care about: ADSL/VDSL modems use frequencies in the HF range to modulate the internet data on a analog telephone line (which uses unshielded cables). If your output power is high enough, and the telephone line picks up enough signal, transmitting might prevent your Internet connection from working. My ADSL modem (actually I tried 3 different models... all of them had some issue) almost instantly loses connectivity if I operate on 3.5 MHz with more than 10-15 W of output power — but the telephone line has a very long cable inside the apartment, which might pick up a lot of RFI. I know other ham radio operators who don't have any problems with ADSL and have far more output power than me... so this depends a lot on your local setup. And if you're going to operate in VHF/UHF, I wouldn't expect any interference on ADSL. Cable modems (as they use shielded cables for transmission) will probably be less prone to interference with HF, but I don't have any direct experience with that.

Update: I've switched from ADSL to VDSL (to increase Internet bandwidth, fiber was unfortunately not possible), and moved the modem to the living room, around 10 meters farther from the transmitter than before. The telephone line now goes straight to the modem, and the line branch passing near the transmitter has been disconnected. As a result, even operating with the linear amplifier (~500 W output) on 3.5 MHz (or on any other RF band) does not affect the Internet connection in a significant way any more. I didn't look at the line quality parameters to see if there's any effect, but the connection stays up and the throughput doesn't seem to really change during transmission. I occasionally had disconnections while tuning the linear amplifier, but it only happens once in a while.

Source Link
Ale HB9TST
Ale HB9TST
  • 121
  • 5

On which bands are you going to operate? I regularly operate on HF bands (160-10 meters) and never have any interference with the WiFi signal. Except if you operate on microwaves (e.g., 13 cm band, which overlaps with the frequency range used by 802.11b/g/n), I would not expect any interference on the WiFi.

However, there is something else to care about: ADSL/VDSL modems use frequencies in the HF range to modulate the internet data on a analog telephone line (which uses unshielded cables). If your output power is high enough, and the telephone line picks up enough signal, transmitting might prevent your Internet connection from working. My ADSL modem (actually I tried 3 different models... all of them had some issue) almost instantly loses connectivity if I operate on 3.5 MHz with more than 10-15 W of output power — but the telephone line has a very long cable inside the apartment, which might pick up a lot of RFI. I know other ham radio operators who don't have any problems with ADSL and have far more output power than me... so this depends a lot on your local setup. And if you're going to operate in VHF/UHF, I wouldn't expect any interference on ADSL. Cable modems (as they use shielded cables for transmission) will probably be less prone to interference with HF, but I don't have any direct experience with that.