The Pasternack Flexible RG316-DS Coax Cable Double Shielded with Ta\ n FEP Jacket is part of over 35,000 RF and microwave items with 99% availability. Velocity of Propagation 66 % Operating Voltage (AC) 1,900 Vrms Nominal Capacitance 30. 15-1. Click the following link (or enter part number in “SEARCH” on website. Types of Coaxial Cables - Flexible, Semi-Rigid, and Formable Coax. Velocity Factor Percentage . Conductor DCR Nom. RG316, 50 Ohm, 3 GHz, 200°C, ø2. 4 dB/100m . Application: the bnc coaxial cable is widely used for RF applications or flexible networks, ham radio, bnc attenuator, Portable. 20. 5% RG 223 Loss Attenuation Specifications and Power Handling by Frequency Frequency (MHz) Attenuation (db/100ft) Power (watts) 10 2. Flexible RG316 Coax Cable Single Shielded with Tan FEP Jacket RG316-U-BULK from Pasternack Enterprises is available for same day shipment from our Irvine, CA location in the United. The model assumes: R is proportional to square root of frequency; L is constant; G is proportional to frequency; and; C is constant. ^Hopefully they get it right. 5% RG 223 Loss Attenuation Specifications and Power Handling by Frequency Frequency (MHz) Attenuation (db/100ft) Power (watts) 10 2. RG316 coax has a shield count of 1 and the maximum frequency for this Pasternack cable is 3 GHz. UV-Resistant: Yes . RG174 A/U COAXIAL CABLE / 50Ω. Ben 23rd September 2015 - 7:07 am. d = diameter of inner conductor. LOSS @ 50 MHz. Let’s compute the velocity in foot per second: delay len v = Eq. a matter of a couple of inches either way won't make a. 4 [96. Pasternack RG316 flexible coax cable is 50 Ohm and has a PTFE dielectric. 9 Inches, Attenuation 5. RG316/U – Coaxial Cable RG-316 50 Ohms from Pasternack. Our M17/113-RG316 Flexible Coax Cable Tan FEP Jacket is in-stock or assembled at our ISO 9001:2008 certified facilities in Texas. 19 142. environmental factor, and power capability. 1 43. 21 Jul 2021Harbour Industries • 4744 Shelburne Road • Shelburne • Vermont • 05482 • USA • 802-985-3311 Attenuation (dB/100 ft) M17 Part Impedance (ohms) CapacitanceTimes Microwave Systems - High-performance RF/Microwave solutions. There is no one-size-fits-all answer to this question. This 50 Ohm 0. Velocity Factor: 84% (0. DetailsVelocity Factor Balun Experiment. 82. RG316 clear outer can be stripped with electrician's stripper using 1. MIL-C-17/60. McCORMICK . Here's a quick line loss calculator to use Note that the simple program used for this web page gives a very close approximation for additional losses due to SWR. 66) Minimum Bend Radius: 6” Repeated BendsMinimum Bend Radius: Minimum Bend Radius: 2. In regards to electrical specifications, these cables differ mainly in terms of their maximum voltage rating, capacitance, and maximum frequency. 99] [pF/m] . 8 Ω/1000ft @20°C, Nominal: 6) OA Shield DCR: 8. HARBOUR INDUSTRIES. The line is energized by a 1 GHz, 50-Ohm generator. 102 jacket made of FEP. The ratio of the above speed to the speed of light gives us the velocity factor Vf: 0. So it should be possible for the velocity to change without the characteristic impedance changing, but. The silver-plated outer conductor prevents oxidation of the conductors thereby minimizing attenuation change vs time. 6 ft, 2 m. 30 140. 08. The complete development of transmission line theory is presented in Section 2. > resistance. RG316 attenuation is lower than other options in this category due to the large size of its conductor. Comparison of the technical data of coaxial cables. 80, but the Wireman version resembling windowline is 0. 82) Velocity Factor: 66% (0. 1 1 5 GHz Attenuation, Typ 1. 50 Tensile strength ≥ 23. 9 65. $3. Learn More about Molex subminiature rf . The Time domain reflectometry (TDR) length is calculated by using the following formula. 1 m, Zo = 50 lossless transmission line, RG316, with a velocity factor of 0. This raises the feedpoint impedance by a factor of 4 and provides a good match to 50 ohm feedline; the feedline is usually coiled to form an air-cored common-mode choke close to the feedpoint. 5 Ohm/1000ft (28 Ohm/km) 29 pF/ft (95 pF/m) 50 Ohm 70% Voltage Voltage Rating 900 V (Mil-Spec) Mechanical Characteristics Temperature Operating-70°C to +200°C Bend Radius Installation Min. 195 dB/100ft 11. 966 10 8 8 = ∗ ∗ Vf = or 66. The cables they use have a different velocity factor than the ones I do. The higher the velocity factor, the lower the loss through the cable. Set Parameters as Desired. This cable is also available for purchase in. 66) Minimum Bend Radius: 6” Repeated BendsMinimum Bend Radius: Minimum Bend Radius: 2. 80,to work out the electrical halfwave it 300/27. All prices include GST. 71 each and save 6%. RG-6/U PE (Belden 8215) 66. $299. 5 % Operating Voltage (AC) 1,200 Vrms DWV (AC) 2,000 Vrms Nominal Capacitance 32 pF/ft [104. For more. M17/113-RG316 - Harbour Industries. 66) Minimum Bend Radius: 6” Repeated BendsMinimum Bend Radius: Minimum Bend Radius: 2. 78 (1) 82 (18) Get Results; Price Range . Consult the cable manufacturer to determine the specification for your cable type. The length of the line is lambda=6. Electrical Specifications. D = diameter of insulation under the shield. Sales 1800 108 3888 (toll free), 1800 3000 3888 (toll free) Technical 1800 108 3888 (toll free), 1800 3000 3888 (toll free) Live Agent. RG174: (Sheath colour: black) 50Ω. 0dB: 400MHz: 17. RG316 26AWG 50ohm 82ft 25m Brown PTFE SPCCS (Silver Plated Copper Coated Steel) 7 x 0. Per specification, RG400 coax cable will have splices. If the dielectric constant of the cable (ε r) is known, the approximate velocity factor can be calculated using equation 5. æ k s /), is a type of electrical cable consisting of an inner conductor surrounded by a concentric conducting shield, with the two separated by a dielectric (insulating material); many coaxial cables also have a protective outer sheath or jacket. 2 Maximum Operating Frequency, GHz 8 RF Shielding, dB 90 Capacitance, pF/ft [pF/m] 29. 59 mm] Environmental Specifications Temperature Operating Range -55 to +200 deg C Compliance Certifications (see product page for current document) Plotted and Other Data Notes: Configuration: Flexible Cable 1 Shield(s) Velocity: Solid Polyethylene (PE) 1. Frequency 0. Most of us don't think of it, but the outer jacket of most feedline cabling is flammable, and this factor can influence how you run the cabling and what cable you chose to. 59mm 1200vac. Read more. VF is the velocity factor (%); v P is the velocity of propagation in the transmission line (m/s or ft/s); c is the speed of light in a vacuum (about 3. 458 km. The velocity factor (VF), of a transmission medium is the speed at which a wavefront of a signal passes through the medium, relative to the speed of light. Air Space Teflon (AST) 1. 65. Rg coax listCoaxial cable list cables standard flexible table rf velocity factor qst 1946 april characteristics. The Fairview Microwave RG316-DS Flexible Coax Cable Tan FEP Jacket is part. M17/113D-RG316 Coaxial Cable RG316 coaxial cable is like a reliable messenger for high-frequency signals, often seen in a variety of tech setups. 1 MHz about 3. help. *PLEASE ANSWER ALL QUESTIONS* A makeshift dipole transmitting antenna is constructed as shown below to transmit on the 477 MHz band. The Velocity Factor (VF) is a property of transmission lines, specifically used with coaxial cables. The Pasternack 10-32 Male to BNC Male Cable. 8 pF/ft [101. 5 % Shielding Effectiveness 85 dB Operating Voltage (AC) 1,200 Vrms Inner Conductor DC Resistance 83. Flexible RG316 Coax Cable Single Shielded with Tan FEP Jacket RG316-U-BULK from Pasternack Enterprises is available for same day shipment from our Irvine, CA location in the United States. Coaxial Cable, RG316, BNC Male Connectors, FEP Jacket, 5 ft. Center Conductor: Solid Silver Copper-Clad Steel Strand Size: 0. 1 [6. 41 Ohms/100 ft max (20° C) Spark Test 2,000 volts RMS +10%/-0%RG316 26AWG 50ohm 500ft 152. From what I understand it has to be odd multiples of quarter wavelength, including the velocity factor of the cable. Measurements were made of the cable impedance with the far end of the cable first open circuited, (Zoc), and then short. 5% (0. 81) Velocity Factor: 78% (0. RG316 & RG178 Cable Sets for PCB & Panel Applications. Mouser Part # 538-73251-0930. Shielding factor [db] 52: Velocity [%/c] 66: 69: Delay [ns/m] Mechanical: Temperature: max. RG316-DS coax has a shield count of 2, a RF shielding of 85 dB and the maximum frequency for this Pasternack cable is 3 GHz. Velocity Factor, Velocity of Propagation, Vp. Expressed as a number between 0 and 1 (or a percentage), it is the ratio of. RG58A, RG58B, RG58C, RG213, RG214, and RG8 have a velocity factor of 0. Equation 5. 098 in: Jacket Material: FEP: No. Frequency Range DC 3 GHz Impedance 50 Ohms Velocity of Propagation 69 % Operating Voltage (AC) 900 Vrms Dielectric Withstanding Voltage (AC) 2,000 Vrms Jacket Spark 2,000 Vrms Velocity Factor: 66% (0. 4” Minimum Bend Radius: 5” 2. 1,900 Vrms . 1,900 Vrms . Numerical values. 99] [pF/m]. 93 36. 75 times the speed of light (in a vacuum), nominally 3 x 10 8 metres/ second. Minimum Bend Radius Once: 0. The velocity factor is directly related to the permittivity of the transmission line. RG316-DS: 283Kb / 3P: Flexible RG316 Coax Cable Double Shielded with Tan FEP Jacket RG316-U: 382Kb / 4P: Flexible RG316 Coax Cable Single Shielded with Tan FEP Jacket ITT Industries: RG316/U: 452Kb / 39P:. You should use the average velocity formula if you can. Strip 3/4" of the jacket off of one end of the coaxial cable. in the cables, cable coaxial category. The incoming gaseous stream is at 30°C, 110 kPa. 46]. Coax Crimp Tool Kit. I have build this dipole with no balun out of a RG316 coax cable and servo wires. arnoflex 240 PE Koaxialkabel. 46][pF/m] Performance by Frequency Band. This cable family of "Low Loss Cable" is distinguished by double shielding and lower attenuation or cable capacitance of the standard cable (e. The VF of an actual cable will often differ by +/- a few percent from the manufacturers published VF spec for two reasons: 1. The Pasternack Flexible RG316 Coax Cable Double. With increasing permeability, the skin depth decreases, increasing loss. 60 to . Please note that each coax has it's own velocity factor (Vf) and that value has to be used to calculate the final length of coax used in a balun for use at any specific frequency/band. 8 [101. 42 92. 81) Velocity Factor: 82% (0. 694c: Air Space Teflon (AST) 1. MIL-C-17/93. Sold by the foot - Minimum order 5 feet. This velocity factor Kv is used to modify the Lewis. They both have a small diameter, are flexible, and both have a higher signal loss than larger diameter cables. Velocity (% of c) 65. 50 /m. Using a different cable changes the velocity factor and thus throws off the calculations. 1,382 In Stock: 1:. Our RG316-DS Flexible Coax Cable Tan FEP Jacket is in-stock or assembled at our ISO 9001:2008 certified fa\ cilities in Texas. 5 mm, FEP jacket Technical Data Construction Material Detail Diameter. Velocity Factor of Coax. hi nav,the velocity factor for foam cables like rg8x is always in the range 0. The high performance coaxial cable is supplied in exact accordance with the MIL-DTL-17 specifications. 4 pF/ft [96. Zo length erator antenna Za Cap Acun make 74 GAND Insulator Rope onsche Bud Car Standard Dipole Construction 1 shunt stub Using the Smith Chart or otherwise: (i) Find the magnitude and phase angle. 13-1. 69. 97] [pF/m] Performance by Frequency Band. M17/113-RG316 M17/113-RG316 KX22 SCWS 7 x 0. Cable Velocity Factor and Loss Data (per 100 feet) TYPE. Description Pasternack’s PE3573 SMA male to SMA male cable using RG316 coax is part of our full line of RF components available for same-day shipping. ^Hopefully they get it right. 2 RG58 Coaxial CableRG 400 Cable is also approved for direct burial. The ratio correction factor Cm is a function of the gear ratio, mG. 3 inches long. HARBOUR INDUSTRIES. Since any dielectric permittivity greater than 1 (air/vacuum) will have the effect of slowing the phase velocity of a wave, the VF is given as a percentage representing that reduced phase velocity. 66) Minimum Bend Radius: 3” Minimum Bend Radius: 1” Minimum Bend Radius: 4” Minimum Bend Radius: 5” RG316 Coaxial Cable Specs. Velocity Factor Percentage . 1 m, Zo = 50 2 lossless transmission line, RG316, with a vel. Velocity Factor:. 015: Halogen-free:Velocity of Propagation, % 66 Maximum Operating Frequency, MHz 1000 Capacitance, pF/ft [pF/m] 30. NOTE: Max length available 43 feet. Fairview Microwave flexible 50 Ohm M17/113-RG316 coax cable datasheet of specs, dimensions, CAD drawing (s) and other details are found in the PDF available for download on the product page. 5 Ohm/1000ft (28 Ohm/km) 29 pF/ft (95 pF/m) 50 Ohm 70% Voltage Voltage Rating 900 V (Mil-Spec) Mechanical Characteristics Temperature Operating-70°C to +200°C Bend Radius Installation Min. To help RF engineers and program managers select the right cable assembly for their application, Gore offers helpful information through our. Example 1 (cont. The return loss of a device is found to be 20 dB. RG316 Coaxial Cable Specs. 0 mm, for cctv, rs 6 /meter. 5 kVrms(at sea level) Test voltage 12. It all begins with the diameter of the conductors. Our RG316 Flexible Coax Cable FEP Jacket is in-stock or assembled at our ISO 9001:2008 certified facilities in Texa\ s. RG-316 coaxial cable is most often used for the transmission of radio frequency signals, telecommunications/wireless communication, broadcasting, and. 101 inch. 1dB 1000 MHz: 85. . 84) Velocity Factor: 81% (0. 59. Network Cable Propagation Delay. 114 inches OD and a PTFE dielectric. See below for full RG316 cable specifications. Performance by Frequency Band Description F1 F2 F3 F4 F5 Units . For a closed-cell foam dielectric, forIt’s true that both RG174 and RG316 feature stranded, copper-clad steel conductors, silver-plated copper braid shields, PTFE dielectric materials, and an FEP jacket. 67 ! The elements are attached to the boom using the 5 saddle clips. . Two RG316 cables out of 3 from AliExpress had an attenuation of more than 4dB, i. In addition, RG58 with TNC and Type N connectors is used for remote antenna feeds. 5 Ω/1000ft @20°C, Nominal: 7) Voltage Withstanding: 2 kV, Minimum: 8). Molex: RF Connectors / Coaxial Connectors SMA JACK BULKHEAD 50OHM RG316 CABLE. Mechanical Specifications. 42 92. Compared to other high temp cables, it has excellent resistance to heat, moisture, and abrasion. The RG316 loss chart gives common frequency and loss characteristics. Velocity of Propagation 70 % Operating Voltage (AC) 1,200 Vrms Nominal Capacitance 32 pF/ft [104. 1 m, Zo = 50 2 lossless transmission line, RG316, with a velocity factor of 0. JOHNSON - CINCH CONNECTIVITY. (Same for the 1/4 wave. 25m,so either way mate your just about spot on. Coaxial cable, or coax (pronounced / ˈkoʊ. 66. 5 Ohm/1000ft (271 Ohm/km) 8. RG316 is a coax communication wire with a military rate. BNC Male to BNC Male Cable Using RG316 Coax PE3C2416 from Pasternack Enterprises is available for same day shipment from our Irvine, CA location in the United States. MINIMUM LENGTH OF ANY ONE PIECE IS 25' Page 2 of 3 01-05-2017 Detailed Specifications &. 102 jacket made of FEP. 1MHz wave has a wavelength of 21. 99 to 46. 8×10 8 ft/s). Using Equation (3) above, the resultant relative permittivity is 2. Click the following link (or enter part number in “SEARCH” on website. 48m White FEP SPCCS (Silver Plated Copper Coated Steel) 7 x 34AWG 2. For example, if X=0 at 49. Zo length generator antenna Zq CH 2/4 SHIS Insulator This paint should be keep m Cam Co Standard Dipole Construction shunt stub Using the Smith Chart or otherwise: (i) (ii) Find the magnitude and. 39 208. 66) Velocity Factor: 69. 5 1 5 10 18 GHz Attenuation, Typ 7. . Quick links. Velocity of Propagation 69. Pasternack’s RG316/U is. Conductor: Silver-coated copper-plated steel; Dielectric: Pure PTFE; Screen: Silver-plated copper braid; Jacket: Fluorinated ethylene propylene; Characteristic impedance: 50 +/-2-ohms; Maximum voltage: 1,200-volts; Operating temperature range: From -55ºC to 200ºC; Propagation velocity: 69. 5 % Shielding Effectiveness 85 dB Operating Voltage (AC) 1,200 Vrms Inner Conductor DC Resistance 83. Velocity of Propagation 69% 100 MHz 28,00 Impedance 50 Ω 300 MHz 46,00 Testing Voltage 2000V 500 MHz 60,00 Operating Voltage 1100V 800 MHz 78,00 Operative. 5 % Dielectric Withstanding Voltage (AC) 5,000 Vrms Corona Discharge. MILC17/113. The velocity factor of solid twinline is usually about 0. But one stack difference between the two of these cables is in the center of each. 6dB: 100MHz: 8. 0 46AC0251 Data Sheet + RoHS. For 3 ≤ m G ≤ 20. environmental factor, and power capability. 0. 39 208. 195 0. Created Date: 5/1/2020 10:31. In the preintegrated foot velocity factor, the usual non-slip assumption is not adopted. 50 210. 5 % Shielding Effectiveness 85 dB Operating Voltage (AC) 1,200 Vrms Inner Conductor DC Resistance 83. A cable with a velocity factor of 70% means that the signal travels at 0. Velocity of Propagation 69 % Capacitance 29. A cable with a velocity factor of 0. 38 dB: Frequency, Max: 3 GHz: Max Operating Temperature:. Fairview Microwave RG316 coax is constructed with PTFE dielectric and a maximum operating temperature of 200 degrees C. You can also use RG316, which is more tolerant of heat. 7 13. 012: 0. All of our parts are available for shipping worldwide. + Check Stock & Lead Times. Velocity of Propagation 69 % Operating Voltage (AC) 1,200 Vrms DWV (AC) 2,000 Vrms Jacket Spark 2,000 Vrms Nominal Capacitance 29. VF varies with frequency. 9 65. Coaxial Cable, RG316, 50 ohm, 82 ft, 25 m. A configuration as simple as a single insulated wire above ground needs to be modeled, built and tested to extract the equivalent RLGC-parameters, characteristic. 5 meters. RG-316 coaxial cable is most often used for the transmission of radio frequency signals, telecommunications/wireless communication, broadcasting, and military equipment use. For a lossy transmission line $ Z_0 = frac{sqrt{R+jomega L}}{sqrt{G + jomega C}} $ Note that for $ R << omega L$ and $ G << omega C$ this reduces to the expression in your question. I have only seen velocity factors specified for coax cables and other wiring designed for high speed/high. The velocity factor is the speed at which an RF signal travels through a material compared to the speed the same signal travels through a vacuum. 84316 001100 100 FT 1. 91. Our RG316-DS coax is constructed with a 0. 100 LB BROWN E M17/13-RG316 COAX 84316 0011000 1,000 FT 11. Velocity of Propagation 69. 3628-22510079-DS-ND. Consolidated Wire Coaxial Cable Assemblies 316DES006. Check part details, parametric & specs updated 18 SEP 2023 and download pdf datasheet from datasheets. 00 1000 MHz 29. The additional inner foil shield within the S31601 achieves -90 dB shielding effectiveness compared to only -50 dB for a standard RG316 coax cable. The EZ-250-SP from Cross RF is a RF Cable with Frequency Range DC to 12. 9914 cable has a velocity factor of 0. Performance by Frequency Band Description F1 F2 F3 F4 F5 Units . 7 to over 1 depending on cable type and spacing. Zo length erator antenna Za Cap Acun make 74 GAND Insulator Rope onsche Bud. If continuous lengths are needed, please alert your Allied Wire & Cable. 1 43. RG58 foam coax has a velocity factor of 0. Loss. . Plenum data cable typically has a VF between 0. Glarks Coaxial Cable Tool Set, Coax RF Connector Crimping Tool + Coaxial Cable Stripper + BNC/UHF Crimp Male Connectors + Wire Cutter + Screw Driver for RG58, RG59, RG62, RG174. 66 dB/100m . 1 = w. 1 inches) OD. An RG316 cable has a transmission velocity at 0. Velocity of Propagation 70 % Capacitance 29. 7. 00 900 MHz 27. This cable is used for the transmission of radio frequency signals, RG316 cable can also be used in wireless communication, broadcast, and military equipment. In order to find the velocity of the moving object, you will need to divide the change in position by the change in time. 69 times the speed of light which makes the cable length of 3 feet well over 0. of Shields: 1: Attenuation at 1 Ghz. Velocity of Propagation, % 69. 50 /m. 966x10^8 m/s. 70 (approximately 210,000,000 m/s or 4. 67c. The following equations for the ratio correction factor, the velocity factor, and materials factors provide approximations to the values given in the tables. 19 32 dB/100ft 27. You previously purchased this product. DOCUMENT No: CABLE-RG405 SHEET 1 OF 2 REV - RG405 Cable Specifications M17/133-RG405 ` • +1 772-286-9300 AS 9100, ISO 9001 and 14001 Certified Velocity of Propagation 66 % Nominal Capacitance 31. A 14. 79 velocity factor, for . - Leading supplier of wireless communications infrastructure and mobile products. Less than $10 (2) $10-$20 (15) $20-$50 (2) Filter Options . The RG316 loss chart gives common frequency and loss characteristics. 000 LB BROWN E #26 RG316 COAX M17/113 Notes: E = MAY CONTAIN MORE THAN 1 PIECE. Standard Package. – Velocity factor: 0. 9 kg/100 m Min. For very low power, you could use one of the very small poly or PTFE 50 ohm coaxes (eg RG174 or RG316) or even a PCB-style tuned line, for low to mid power. View the options and order: RG-316 Type 50 Ohm MIL-C-17G QPL Cable. Coaxial Cable, Per Ft, MIL-DTL-17, Silver Plated Copper Braid, RG316, 50 ohm. Harga Kabel coaxial teflon RG. 00 135. View in Order History. View in Order History. RG-58 and RG-59 coax (thin) General Rules for Coaxial Cable. $20-$50 (16) $50-$100 (5) $100-$250 (1) Coaxial Cable Assemblies. 5 mm +/- 0. These cables usually consists of an inner conductor surrounded by a tubular insulating layer, surrounded by a tubular conducting shield and an outer covering. The VF of an actual cable will often differ by +/- a few percent from the manufacturers published VF spec for two reasons: 1. Center Conductor: Solid Silver Copper-Clad. Say we want to make a coax that is exactly 1/2 wavelength long (this means when the wave travels through the coax, it makes exactly 1/2 of a cycle while it travels. Mechanical SpecificationsThus we must include a “velocity factor”, which is usually around 95% of the actual calculated quarter wavelength in free space. Order today, ships today. 24, the velocity factor will be less than 0. Would coax cables stripped of their tubular shielding (but not their dielectric) have the. Reply. For the RG316/U-FT REV 1 Click the following link (or enter part number in “SEARCH” on website) to obtain additional part information including price, inventory and certifications:Flexible RG316 Coax Cable Single Shielded with Tan FEP Jacket RG316/U-FT Flexible RG316 Coax Cable Single Shielded with Tan FEP Jacket RG316/U-FT RF Cables Technical Data. 3dB: 200MHz: 12. 1 28. Filter by Availability. CCSMA-MM-RG316DS-24 RG316 Double Shielded Cable, SMA Male/Male, Straight/Straight 24”. 098 Inches, Attenuation 7. RG316 coax cable specs for this wire properties can be found on its RF coax cable RG-316 datasheet PDF specifications above. Coax Crimp Tool Kit 7 in 1. [°C] +70 +200: min. Coaxial cables have many other ratings, too, e. Measurement of Velocity Factor. Page 14-Mini-HowTo Build a cheap 5 minute Notch Filter FPV EquipmentGenerally, the higher the velocity factor, the lower the loss through a coaxial cable. I measured one cable at 22ns and the other at 23ns.