Choosing among antenna tuners & SWR meters can be tricky when the names suggest overlap but the jobs differ. The MFJ-941E is a manual HF tuner and SWR wattmeter for a ham radio transceiver, while the Bird SK-4500 SiteHawk is a handheld cable-and-antenna analyzer for measurements in the 4.5GHz range. The practical question is whether you need a ham-radio antenna tuner with SWR measurement or an antenna analyzer for cable work.
Quick verdict
MFJ-941E is the more direct choice for ham-radio tuning; Bird SiteHawk is the better fit when its stated 4.5GHz analyzer role matches the assignment. They are not two versions of one tool. The listed prices are USD 85.00 and USD 3,499.00, so choosing the Bird means accepting a much larger outlay for a different measurement category.
Compact comparison
| Product | Listed price | Condition | Model |
|---|---|---|---|
| MFJ-941E Deluxe Versa Tuner II | USD 85.00 | Used | 941E |
| Bird SK-4500 SiteHawk | USD 3,499.00 | New - Open box | SiteHawk |
Where each product wins
MFJ-941E wins the ham-radio tuning path. Its 300W HF antenna tuner, manual Type, SWR wattmeter, and fit for a Ham Radio Transceiver all point to tuning and measurement with a transceiver. The MFJ is the one of the pair labeled as an HF antenna tuner.
Bird SK-4500 SiteHawk wins for cable-and-antenna analysis. Its handheld format and 4.5GHz range are paired with a PC-based signal analyzer designation. That makes it the more relevant choice when the assignment involves on-site testing and measuring of cable and antenna performance rather than manual antenna tuning.
Product notes
MFJ-941E Deluxe Versa Tuner II 300W HF Antenna Tuner SWR Wattmeter Clean

The MFJ-941E Deluxe Versa Tuner II 300W HF Antenna Tuner SWR Wattmeter Clean is the clearest match for a shopper searching for a ham-radio antenna tuner accessory. Manual tuning for ham radio transceivers, a 300W power rating, and an SWR wattmeter define its role. It combines tuning and standing-wave measurement in one unit. The important limitation is its Used condition, so that condition belongs in the decision. It is also manual, not a handheld cable-and-antenna analyzer. For an HF setup where manual control is acceptable, the MFJ-941E's named function is the concrete reason to choose it.
Bird SK-4500 SiteHawk 4.5GHz Handheld Cable And Antenna Analyzer

The Bird SK-4500 SiteHawk 4.5GHz Handheld Cable And Antenna Analyzer suits a different brief. Its title gives the specific frequency range and handheld cable-and-antenna format, while its description covers testing and measuring cable and antenna performance during on-site inspections. The PC-based signal analyzer designation is a concrete reason to choose it when that workflow is required. The limitation is fit: shoppers looking for an HF antenna tuner or an SWR wattmeter will find the Bird's stated role centered on analyzer work instead. Its New - Open box condition is another concrete part of the decision. Choose it for the measurement assignment, not simply for a broader-sounding title.
Final choice by use case
Choose the MFJ-941E when the job is ham-radio antenna tuning and the named HF tuner format is what you need. Its manual design, transceiver fit, and SWR wattmeter make the decision straightforward for that use case.
Choose the Bird SK-4500 SiteHawk when the assignment calls for handheld cable-and-antenna analysis in the 4.5GHz range. The price gap is substantial, but the central distinction is the job: tuning a ham-radio antenna versus analyzing cable-and-antenna performance.