Delivers1234
Member
hi. i have a ftm-100d yaesu and I'm setting up pdn and wires-x. I want to be safe and have a dummy load. it outputs 50 watts.
any recommendations?
any recommendations?
Yaesu: dummy load recommendations
- Thread starter Delivers1234
- Start date
This is one of the better deals out there, rated 250 watts through at least 1GHz and it has a sample port to feed frequency counters and other test equipment. You can also stick a rubber duck antenna on the sample port for short range on air testing while into the load. These were many hundreds of $$ new and surplus about $45 including shipping. This load will serve you well into the future with 100w HF radios, medium size amplifiers, etc.
Celwave Dummy Load Termination EMC Sample Port N Female Sweep 6040980 BNC | eBay
Celwave Dummy Load Termination EMC Sample Port N Female Sweep 6040980 BNC.
www.ebay.com
Any idea what the attenuation is at the sample port. I tried finding a spec sheet, but my Google-foo is weak today.
I mapped it out and it varies with frequency as most do. I’m away from home at the moment but remember it’s around 30dB @ 800, 35dB @ 450, 40 @ 150 and higher on HF. I use one a lot when testing repeaters well in excess of 100w to save the load in my HP service monitor. The sample port is useful for basic desense testing on repeaters with duplexers where you terminate the duplexer with this load then generate into the sample port to get a weak receive signal, then turn on the transmitter and check for any degradation.
Oh, and since this info is for the OP, let’s not find out a moderator bought the last one!
Delivers1234
Member
is there a pl259 version?
No, it would not be rated to or past 1GHz if it did. Just use an N to PL-259 jumper. For about the same price as the 250 w rated load with shipping you can get a new Diamond brand 50w load with PL-259. It’s maybe good for about 25w continuous duty. No sample port.
Delivers1234
Member
Like this one?
TIMES ® 1-30 Feet LMR-400 Antenna Jumper Coax Cable PL-259 to N Male Connector | eBay
Connector: PL-259 Male to N Type Male. This cable at 1-30 feet has very low loss. This cable is the best you can get and nothing else compares. Length - 1 to 30 FEET. Very low loss PL259 RF extension cable.
www.ebay.com
Not needed for a cable going to a load, way too stiff. A 2ft RG-58 jumper should be fine for HF to 250w and VHF/UHF to 100w. An upgrade from that might be RG142 or RG-400. If you were making accurate power measurements with a wattmeter through UHF I would use a short RG-213 or 214 jumper between the radio and wattmeter and the RG-58 jumper from wattmeter to the load should still be ok.Like this one?
TIMES ® 1-30 Feet LMR-400 Antenna Jumper Coax Cable PL-259 to N Male Connector | eBay
Connector: PL-259 Male to N Type Male. This cable at 1-30 feet has very low loss. This cable is the best you can get and nothing else compares. Length - 1 to 30 FEET. Very low loss PL259 RF extension cable.www.ebay.com
Here are a couple of US made RG-400 cables. This stuff is silver plated, double shield Teflon insulated.
USA-CA RG400 PL259 UHF Male to N MALE Coaxial RF Pigtail Cable | eBay
Cable Type: RG400. Connector 1: PL259 UHF Male. Connector 2: N MALE. Cable Length: 1 foot to 15 feet depending on selection. Shields: Double.
www.ebay.com
PL259 UHF male to N male RG400 Low Loss Double Shielded Coax Cable | eBay
This coax cable is a must-have for any radio communication enthusiast. It is made with high-quality materials that ensure a reliable and consistent signal transmission. The cable features a PL-259 male connector on one end and an N male connector on the other end, making it compatible with a...
www.ebay.com
Any real radio test equipment manufacturer such as EMR Corp, Celwave, Bird, Telewave, etc. would be your best bet and stay away from cheap POS stuff that come from a far away non-english speaking land that you can't drive a car to and are sold from a warehouse that specializes in inferior merchandise.
