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"SWR" Meter Bars?

Larry- WA2VKG All Messages By This Member #113750 I put up a dipole for 6 meters (fed by RG8x coax). ?I don’t have an SWR meter that’s specified for 6 meters, so I’m at the mercy of the ‘817’s internal “SWR Meter” display as I test the antenna out. There are a lot of great posts in the group that dive into the details of the “SWR” display, but I still can’t resist asking:? How many “bars” in the FT-817’s SWR display do you consider “acceptable?”? I realize that this is a subjective term and depends on a lot of other conditions.? We all want it to be as low as possible (no bars), but I’m wondering how many bars you tend to tolerate before feeling that you need to trim the antenna.? For the sake of argument (because the meter gives a relative indication of reflected power, not SWR), let’s assume we’re operating at 5 Watts. Thanks again! Larry, WA2VKG
Luis Miguel Casta?eda All Messages By This Member #113751 if the radio flashes "high swr", that's it. To me acceptable is no more than 3 bars, if I'm not going to TX for long. On Friday, February 24 2023, 12:40:34, lbakely wrote: For the sake of argument (because the meter gives a relative indication of reflected power, not SWR), let’s assume we’re operating at 5 Watts. -- Those who build beneath the stars build too low. --- Edward Young
Eric van de Weyer All Messages By This Member #113752 Hi Larry, If you have an SWR meter for HF, it’ll probably be fine for 6 m. So long as the directional coupler in it is less than λ/20, about 30 cm (12”) it should work fine for you. If you have one for 2 m or above, that will probably be fine too although you may not be able to achieve full scale deflection on the “set” or “fwd” setting. If, for instance the forward setting only will reach half scale, just extrapolate the physical position of the reflected setting and read off the SWR there. 73….Eric VK2VE. From: [email protected] <[email protected]> On Behalf Of lbakely Sent: Saturday, 25 February 2023 07:41 To: [email protected] Subject: [ft817] "SWR" Meter Bars? I put up a dipole for 6 meters (fed by RG8x coax). I don’t have an SWR meter that’s specified for 6 meters, so I’m at the mercy of the ‘817’s internal “SWR Meter” display as I test the antenna out. There are a lot of great posts in the group that dive into the details of the “SWR” display, but I still can’t resist asking: How many “bars” in the FT-817’s SWR display do you consider “acceptable?” I realize that this is a subjective term and depends on a lot of other conditions. We all want it to be as low as possible (no bars), but I’m wondering how many bars you tend to tolerate before feeling that you need to trim the antenna. For the sake of argument (because the meter gives a relative indication of reflected power, not SWR), let’s assume we’re operating at 5 Watts. Thanks again! Larry, WA2VKG
Larry Macionski All Messages By This Member #113753 Larry- Lower reflected is always better. It is arbitrary in the case of the FT-718... Lower reflected bars only means your finals are operating in a "safer" zone that if it was all bars.. All too many people demand erroneously that 1:1 at all times. Hence dreams of SteppIR's.. as that antenna is the only one that will alow 1:1 across the band at any given frequency.. If you are tuning the antenna tune for minimum bars (minimum smoke) Yet you will find the next outing and re-erection of the same antenna it will be different.. Always remember you can measure manyparamaters with lab accuracy test equipment and boast to your friends, you have precision that rivals the bureau of Standards... But, when I started in Ham Radio I tuned my transmitter with a #47 piolet light bulb and I had a ball working stations with 15 watts CW.. (Well 15 watts was the claim of the author of the single 6V6 transmitter I home brewed. You know what that 15 watts I claimed was input, not RF output to the antenna. Didn't care.. Today's ham is anal retentive with precision watt meters, expensive low loss coax, mandatory baluns, and $1500 radios, wishing they could afford the $3000 radio..? They are not happy and not enjoying Amateur radio.. Perhaps the main reason so many loose interest-- Many also claim it's beyond their budget.. You I know hams that are happy with $200 invested in their station.. Including a VHF talkie.
Robin Kidd All Messages By This Member #113754 开云体育 AMEN, well said!! Robin Kidd? W4IEN EM73vx w4ien@... toggle quoted message Show quoted text On Feb 25, 2023, at 11:40, Larry Macionski via groups.io <am_fm_radio@...> wrote: ?Larry- Lower reflected is always better. It is arbitrary in the case of the FT-718... Lower reflected bars only means your finals are operating in a "safer" zone that if it was all bars.. All too many people demand erroneously that 1:1 at all times. Hence dreams of SteppIR's.. as that antenna is the only one that will alow 1:1 across the band at any given frequency.. If you are tuning the antenna tune for minimum bars (minimum smoke) Yet you will find the next outing and re-erection of the same antenna it will be different.. Always remember you can measure manyparamaters with lab accuracy test equipment and boast to your friends, you have precision that rivals the bureau of Standards... But, when I started in Ham Radio I tuned my transmitter with a #47 piolet light bulb and I had a ball working stations with 15 watts CW.. (Well 15 watts was the claim of the author of the single 6V6 transmitter I home brewed. You know what that 15 watts I claimed was input, not RF output to the antenna. Didn't care.. Today's ham is anal retentive with precision watt meters, expensive low loss coax, mandatory baluns, and $1500 radios, wishing they could afford the $3000 radio..? They are not happy and not enjoying Amateur radio.. Perhaps the main reason so many loose interest-- Many also claim it's beyond their budget.. You I know hams that are happy with $200 invested in their station.. Including a VHF talkie.
Mark Molberg All Messages By This Member #113755 Several years ago, a friend showed me how to wind toroids lto make traps. I use a trapped end fed wire on 20, 30, and 40 meters for SOTA.? Sometimes on 20 I will see 3 bars, and feel safe to operate. If I saw four, I'd be a little hesitant. I need to bring the RigExpert along sometime, to see what three bars might mean for a SWR measurement.? Mark N0MTN? toggle quoted message Show quoted text On Sat, Feb 25, 2023 at 10:14 AM, Robin Kidd <w4ien@...> wrote: AMEN, well said!! Robin Kidd? W4IEN EM73vx w4ien@... On Feb 25, 2023, at 11:40, Larry Macionski via groups.io <am_fm_radio@...> wrote: ?Larry- Lower reflected is always better. It is arbitrary in the case of the FT-718... Lower reflected bars only means your finals are operating in a "safer" zone that if it was all bars.. All too many people demand erroneously that 1:1 at all times. Hence dreams of SteppIR's.. as that antenna is the only one that will alow 1:1 across the band at any given frequency.. If you are tuning the antenna tune for minimum bars (minimum smoke) Yet you will find the next outing and re-erection of the same antenna it will be different.. Always remember you can measure manyparamaters with lab accuracy test equipment and boast to your friends, you have precision that rivals the bureau of Standards... But, when I started in Ham Radio I tuned my transmitter with a #47 piolet light bulb and I had a ball working stations with 15 watts CW.. (Well 15 watts was the claim of the author of the single 6V6 transmitter I home brewed. You know what that 15 watts I claimed was input, not RF output to the antenna. Didn't care.. Today's ham is anal retentive with precision watt meters, expensive low loss coax, mandatory baluns, and $1500 radios, wishing they could afford the $3000 radio..? They are not happy and not enjoying Amateur radio.. Perhaps the main reason so many loose interest-- Many also claim it's beyond their budget.. You I know hams that are happy with $200 invested in their station.. Including a VHF talkie.

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