When I ordered this, I erroneously believed it was designed to split a single radio feed to separate VHF and UHF antennas. It can be used this way, but it you will still incur the full 3db (50%) signal loss. It does is split the signal to or from one signal into two.

PRODUCT REVIEWED: MOOKEERF VHF/UHF 2 Way Splitter ASIN: B0CB5LDLVG

REVIEWER EXPERIENCE: Network/Test Engineer - FCC Licensed Extra Class Amateur Radio Operator

OVERALL IMPRESSION: Solid Body, SO-239 sockets with UHF-type Shells made possibly of a Zinc base with a plated silver alloy. All ports are 50 Ohm Impedance. No IEC 60529 IP Liquid Water Resistance rating is claimed. The unit has side tabs with four holes for wall mounting. A stick-on label indicates which ports are Input vs. Output. PLEASE NOTE that this device is NOT a DIPLEXOR, there are no tuned or frequency-selective components, and all input frequencies egress through both output ports.

TESTED TECHNICAL CHARACTERISTICS: (Testing limited to Dummy Load)

TEST CONFIG: The unit was tested using a Yaesu FT-847 Transceiver as the signal source. One Output (A) was directly routed to a Dummy Load via a 3ft RG-8U patch cord, the other Output (B) was routed to a MFJ-874 RF Power & SWR Meter and another Dummy Load. The FT-847 was set to generate a modulated RF Carrier (CW) at 10W in the center of the Amateur 2-Meter (VHF) Band, and again in the center of the UHF (Amateur 70cm Band). Once Output "A" was tested, the meter was moved to Output "B" and the tests repeated.

RESULTS//

PORT A-VHF: SWR: 1:1.3 // Output Power: 4.5W // Reflected Power: Negligible

PORT A-UHF: SWR: 1:1.4 // Output Power: 4.7 W // Reflected Power: Negligible

PORT B-VHF: SWR: 1:1.3 // Output Power: 4.9W // Reflected Power: Negligible

PORT B-UHF: SWR: 1:1.3 // Output Power: 4.6 W // Reflected Power: Negligible

RESULTS SUMMARY: Output power is halved because of the signal split, the product is documented as having 3dB of distribution loss, and .3db of insertion loss. Using the dB Log scale a 3dB loss would reflect a 50% power loss, adding in the insertion loss the measured power output was exactly as claimed.

The loss was slightly higher for UHF; normally "N" type connectors are required for 200MHz frequencies and above, SO-298 connectors have a non-constant surge impedance which can result in an additional small amount of signal loss.

NOT TESTED: I did not test if the device is bidirectional so that Ports "A" and "B" could be used for two receive antennas.

PRO: Solid Built, decent (but not best) conductive materials. Test Results validated the seller's tech data (NOTE: While I strive to be accurate, my testing and equipment are not Metrology Certified)

CON: SO-239 UHF connectors are used for frequencies that "˜should' use an "N" connector. No IEC 60529 IP Rating identified

RATINGS: 5/5 Product met all expectations, operating as claimed. The few "CONS" noted are minor and would have minimal impact on low-power consumer applications.

PHOTO: (1) Shows Test Setup in Progress (not all test components shown)

I tested this with a couple of different radios and different antenna. It worked well across all of them, splitting the signal quite well. Signal reports were good. I measured it with what I have for testing equipment and loss was within what it says on the box. This is a very well constructed unit using tough materials. Everything threaded on nicely and it worked well.

This splitter is well made, they used high quality connectors heavy duty case that looks water tight but I can't confirm that. I put it on my VNA and sweeper it from 100mhz to 600 MHz and it was well within its specs of -3db in fact it will work well above and bellow the frequencies listed on the case I sweeped it from 1 MHz to 1500 ghz and it stayed with -4 to 5db the SWR started go up a bit around 700 MHz but only to about 1.2:1 then it came back down a bit and leveled out very usable.

Heavy-duty housing (1/8") tested and SWR was in specs. Got good signals out to the local repeaters. Looks like this will last for years. I like the 4 mounting holes so this will be a "solid" addition for my radio gear.

I'm looking forward to experimenting with different antennas (a 2M/70cm on one port and a 220 on the other port.

I like Tri-band radios and having three bands available for local and emergency communications in simple clean setups. This splitter could have a few applications for directing signals without a yagi. 73