AF9U
| Joined: | Wed, Nov 5th 2014, 18:48 | Roles: | N/A | Moderates: | N/A |
Latest Topics
| Topic | Created | Posts | Views | Last Activity |
|---|---|---|---|---|
| What do I trust, my tuner or my analyzer? | Jan 26th 2016, 18:49 | 7 | 5,509 | on 27/1/16 |
| MFJ-949E Tuner with Comet SBB-5 | Nov 6th 2014, 17:28 | 3 | 6,504 | on 11/11/14 |
Latest Posts
| Topic | Author | Posted On |
|---|---|---|
| What do I trust, my tuner or my analyzer? | AF9U | on 27/1/16 |
| Ok, that is very helpful Zack. Maybe I'll add a balun and see if my readings are closer between the tuner and the analyzer. I wanted to get a balun anyway. Thank you very much! Drennen, AF9U |
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| What do I trust, my tuner or my analyzer? | AF9U | on 27/1/16 |
| Thank you Bill for the reply again. I must apologize for my input/output labeling in my post. I had it connected correctly, I just called it the wrong thing. In fact, on the actual tuner it doesn't say input/output. It says Transmitter and Coax1 or Coax2 depending on which you have selected. But good catch...that probably would have fixed my problem. I'll keep researching, based on your description above I should be seeing about a 1:1 match on the transmitter side coming off the tuner and I am seeing around a 1.8:1. Something isn't right. 73, Drennen. Af9U |
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| What do I trust, my tuner or my analyzer? | AF9U | on 26/1/16 |
| Well, I have tuned the antenna for a particular frequency. And that is what I am trying to analyze. I'd like to know if what I am showing on the tuner is confirmed with the analyzer. Wouldn't the output of the tuner (I am referring to the coax that goes from the tuner to the radio) be a different SWR after it's been tuned? Or is it an unreliable SWR because of the tuned? That is what I am trying to understand? Thanks, Drennen |
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| What do I trust, my tuner or my analyzer? | AF9U | on 26/1/16 |
| Hello friends, Here's the setup: I have a simple homebrew 20 meter dipole up in the attic (no balun). Off the feedpoint, I have 100 ft of RG8X going to the tuner in the basement. There is about 20-30 feet of extra coax than I need, but it's what I had and I figured cutting and putting my own PL-259 on there would have been worse than leaving it long. (If this is a big issue...let me know) I can tune my SWR to about 1.4:1 around the band. Not much better than that, but I'm not a full half wave off the ground either. So that's a factor. It's up about 26 feet. My question is. Why does my MFJ-949E give me a 1.4:1 SWR, but if I connect my MFJ-259C to the output of the tuner I am showing about 1.7-1.8:1 on the same frequency? Which should I trust? Thanks, Drennen, AF9U |
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| MFJ-949E Tuner with Comet SBB-5 | AF9U | on 11/11/14 |
| Thank you Bob, I appreciate the information. I thought I had read it would tune almost any antenna, but I obviously misunderstood. Thank you for clearing this up for me. Take care, 73, Drennen |
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