Okay, #AmateurRadio math time.
Anyone know roughly how far a UHF (440) signal can travel, 40W of power, end-fed half-wave vertical mounted above the metal roof of a 1-story house? We're on the city limits so there's not much obstruction.
I'm not looking for exact answers, I'm just trying to calculate if 40-50 watts of power is enough to reach the neighboring (30 miles) city.
For bonus points: assume I'm on a 5W HT. You think there's enough rx gain to even hear an HT 30 miles away? Or would I have to bounce through the 50W tx in my car as an amplifier to even try that.
#HamRadio
Teknikal_Domain /
npub1nr…ezxf2
2023-12-12 02:59:10
Author Public Key
npub1nray8pxrwrrpv5yljpyjj4r6cmp4pcqwqhrrc7kuw8dtvqdaekrsnezxf2Published at
2023-12-12 02:59:10Event JSON
{
"id": "bf73b917b125bbb2b5768b2d0f19f1d31ed8fec494cac953f7477cce85cd59e9",
"pubkey": "98fa4384c370c616509f904929547ac6c350e00e05c63c7adc71dab601bdcd87",
"created_at": 1702349950,
"kind": 1,
"tags": [
[
"t",
"amateurradio"
],
[
"t",
"hamradio"
],
[
"proxy",
"https://mastodon.tekdmn.me/users/tek_dmn/statuses/111565206379372398",
"activitypub"
]
],
"content": "Okay, #AmateurRadio math time.\n\nAnyone know roughly how far a UHF (440) signal can travel, 40W of power, end-fed half-wave vertical mounted above the metal roof of a 1-story house? We're on the city limits so there's not much obstruction.\n\nI'm not looking for exact answers, I'm just trying to calculate if 40-50 watts of power is enough to reach the neighboring (30 miles) city.\n\nFor bonus points: assume I'm on a 5W HT. You think there's enough rx gain to even hear an HT 30 miles away? Or would I have to bounce through the 50W tx in my car as an amplifier to even try that.\n\n#HamRadio",
"sig": "404d422f1edb9f193450ac7fc1d91d142f262ebeea86e7f9224574b6ec64a4b518bcb1181071c862f78f7e868859e2e09a136d7b5ef4ee8967ef17c55672e73e"
}