Overview
Frontgrade provides adapters for test labs and systems used in high-performance commercial, military and space applications. Delivering superior electrical performance, these durable, precision coaxial test adapters function as connector-savers to protect expensive test equipment and panel connectors from damage and wear.
Constructed of gold-plated beryllium copper and stainless steel, our 50-ohm adapters operate from DC to 18 GHz. Interfaces conform to MIL-PRF-39012 and MIL-STD-348.
Frontgrade also supplies an extensive array of between-series system coaxial adapters for test equipment and high-power systems. We carry most commonly used connector types. All of our adapters are designed to mil-standard interfaces and many meet stringent MIL-T-81490 requirements.
Our most common test adapters are summarized below. Contact Frontgrade for part numbers for TR, SC, and other less common interfaces.
Precision 7mm
Precision 7mm
| Adapter Type | Part Number | VSWR up to 18 GHz - Max |
VSWR up to 18 GHz - Typ |
Nominal (in.) | OD (mm) | Nominal (in.) | Length (mm) |
|---|---|---|---|---|---|---|---|
| 7 mm -Nm | 1601-0402 | 1.08 | 1.06 | 0.86 | 22 | 2.1 | 53 |
| 7 mm -Nf | 1601-0409 | 1.08 | 1.06 | 0.86 | 22 | 2.5 | 64 |
| 7 mm -ETNCm | 1601-0401 | 1.1 | 1.07 | 0.86 | 22 | 2.1 | 53 |
| 7 mm -ETNCf | 1601-0408 | 1.1 | 1.07 | 0.86 | 22 | 2.5 | 64 |
| 7 mm -SMAm | 1601-0403 | 1.1 | 1.08 | 0.86 | 22 | 2 | 51 |
| 7 mm -SMAf | 1601-0407 | 1.1 | 1.08 | 0.86 | 22 | 2 | 51 |
| 7 mm -3.5 mm m | 1601-0410 | 1.1 | 1.06 | 0.86 | 22 | 2.1 | 53 |
| 7 mm -3.5 mm f | 1601-0411 | 1.1 | 1.06 | 0.86 | 22 | 2 | 51 |
| 7 mm -7 mm | 1601-0404 | 1.07 | 1.05 | 0.86 | 22 | 2.2 | 56 |
Precision N
Precision N
| Adapter Type | Part Number | VSWR up to 18 GHz - Max |
VSWR up to 18 GHz - Typ |
Outer Dimension (in.) |
Outer Dimension (mm) |
Length (in.) | Length (mm) |
|---|---|---|---|---|---|---|---|
| Nm - ETNCm | 1601-0201 | 1.11 | 1.08 | 0.79 | 20 | 1.9 | 48 |
| Nm - ETNCf | 1601-0208 | 1.11 | 1.08 | 0.79 | 20 | 2.4 | 61 |
| Nm - SMAm | 1601-0203 | 1.11 | 1.08 | 0.79 | 20 | 1.9 | 48 |
| Nm - SMAf | 1601-0207 | 1.11 | 1.08 | 0.79 | 20 | 1.8 | 46 |
| Nm - 3.5 mm m | 1601-0210 | 1.11 | 1.08 | 0.79 | 20 | 1.9 | 48 |
| Nm - 3.5 mm f | 1601-0211 | 1.11 | 1.08 | 0.79 | 20 | 1.9 | 48 |
| Nf - ETNCm | 1601-0901 | 1.11 | 1.09 | 0.79 | 20 | 2.4 | 61 |
| Nf - ETNCf | 1601-0908 | 1.11 | 1.09 | 0.79 | 20 | 2.8 | 71 |
| Nf - SMAm | 1601-0903 | 1.11 | 1.08 | 0.79 | 20 | 2.3 | 58 |
| Nf - SMAf | 1601-0907 | 1.11 | 1.08 | 0.79 | 20 | 2.3 | 58 |
| Nf - 3.5 mm m | 1601-0910 | 1.11 | 1.08 | 0.79 | 20 | 2.4 | 61 |
| Nf - 3.5 mm f | 1601-0911 | 1.11 | 1.08 | 0.79 | 20 | 2.3 | 58 |
| Nm - Nf | 1601-0209 | 1.09 | 1.06 | 0.79 | 20 | 2.4 | 61 |
| Nm- Nm | 1601-0202 | 1.09 | 1.06 | 0.79 | 20 | 1.9 | 48 |
| Nf - Nf | 1601-0909 | 1.09 | 1.06 | 0.79 | 20 | 2.8 | 71 |
Precision ETNC
Precision ETNC
| Adapter Type | Part Number | VSWR up to 18 GHz - Max |
VSWR up to 18 GHz - Typ |
Outer Dimensions (in.) |
Outer Dimensions (mm) |
Length (in.) | Length (mm) |
|---|---|---|---|---|---|---|---|
| ETNCm - Nm | 1601-0201 | 1.11 | 1.08 | 0.79 | 20 | 1.9 | 48 |
| ETNCm - Nf | 1601-0901 | 1.11 | 1.08 | 0.63 | 16 | 2.4 | 61 |
| ETNCm - SMAm | 1601-0103 | 1.13 | 1.1 | 0.63 | 16 | 1.9 | 48 |
| ETNCm - SMAf | 1601-0107 | 1.13 | 1.1 | 0.63 | 16 | 1.8 | 46 |
| ETNCm - 3.5 mm m | 1601-0110 | 1.13 | 1.09 | 0.63 | 16 | 1.9 | 48 |
| ETNCm -3.5 mm f | 1601-0111 | 1.13 | 1.09 | 0.63 | 16 | 1.9 | 48 |
| ETNCf - Nm | 1601-0208 | 1.11 | 1.09 | 0.63 | 16 | 2.4 | 61 |
| ETNCf - Nf | 1601-0908 | 1.11 | 1.09 | 0.63 | 16 | 2.8 | 71 |
| ETNCf - SMAm | 1601-0803 | 1.13 | 1.1 | 0.63 | 16 | 2.4 | 61 |
| ETNCf - SMAf | 1601-0807 | 1.13 | 1.1 | 0.63 | 16 | 2.3 | 58 |
| ETNCf - 3.5 mm m | 1601-0810 | 1.13 | 1.09 | 0.63 | 16 | 2.4 | 61 |
| ETNCf - 3.5 mm f | 1601-0811 | 1.13 | 1.09 | 0.63 | 16 | 2.4 | 61 |
| ETNCm - ETNCf | 1601-0108 | 1.13 | 1.1 | 0.63 | 16 | 2.4 | 61 |
| ETNCm - ETNCm | 1601-0101 | 1.13 | 1.1 | 0.63 | 16 | 1.9 | 48 |
| ETNCf - ETNCf | 1601-0808 | 1.13 | 1.1 | 0.63 | 16 | 2.9 | 74 |
Precision 3.5mm
Precision 3.5mm
| Adapter Type | Part Number | VSWR up to 18 GHz - Max |
VSWR up to 18 GHz - Typ |
Outer Dimensions (in.) |
Outer Dimensions (mm) |
Length (in.) | Length (mm) |
|---|---|---|---|---|---|---|---|
| 3.5 mm m - Nm | 1601-0210 | 1.11 | 1.08 | 0.79 | 20 | 1.9 | 48 |
| 3.5 mm m - Nf | 1601-0910 | 1.11 | 1.08 | 0.63 | 16 | 2.4 | 61 |
| 3.5 mm m - ETNCm | 1601-0110 | 1.13 | 1.09 | 0.63 | 16 | 1.9 | 48 |
| 3.5 mm m - TNCf | 1601-0810 | 1.13 | 1.09 | 0.63 | 16 | 2.4 | 61 |
| 3.5 mm m - SMAm | 1601-1003 | 1.13 | 1.11 | 0.63 | 16 | 1.9 | 61 |
| 3.5 mm m - SMAf | 1601-1007 | 1.13 | 1.11 | 0.63 | 16 | 1.8 | 46 |
| 3.5 mm f - Nm | 1601-0211 | 1.11 | 1.08 | 0.63 | 16 | 1.9 | 48 |
| 3.5 mm f - Nf | 1601-0911 | 1.11 | 1.08 | 0.63 | 16 | 2.3 | 58 |
| 3.5 mm f - ETNCm | 1601-0111 | 1.13 | 1.09 | 0.63 | 16 | 1.9 | 48 |
| 3.5 mm f-TNCf | 1601-0811 | 1.13 | 1.09 | 0.63 | 16 | 2.4 | 61 |
| 3.5 mm f - SMAm | 1601-1103 | 1.13 | 1.11 | 0.63 | 16 | 1.8 | 46 |
| 3.5 mm f - SMAf | 1601-1107 | 1.13 | 1.11 | 0.63 | 16 | 1.8 | 46 |
| 3.5 mm m - 3.5 mm f | 1601-1011 | 1.13 | 1.07 | 0.63 | 16 | 1.9 | 48 |
| 3.5 mm m - 3.5 mm m | 1601-1010 | 1.13 | 1.07 | 0.63 | 16 | 1.9 | 48 |
| 3.5 mm f - 3.5 mm f | 1601-1111 | 1.13 | 1.07 | 0.63 | 16 | 1.8 | 46 |
Precision SMA
Precision SMA
| Adapter Type | Part Number | VSWR up to 18 GHz - Max |
VSWR up to 18 GHz - Typ |
Outer Dimensions (in.) |
Outer Dimensions (mm) |
Length (in.) | Length (mm) |
|---|---|---|---|---|---|---|---|
| SMAm - ETNCm | 1601-0103 | 1.13 | 1.1 | 0.63 | 16 | 1.9 | 48 |
| SMAm - ETNCf | 1601-0803 | 1.13 | 1.1 | 0.63 | 16 | 2.4 | 61 |
| SMAm - Nm | 1601-0203 | 1.11 | 1.08 | 0.79 | 20 | 1.9 | 48 |
| SMAm - Nf | 1601-0903 | 1.11 | 1.08 | 0.63 | 16 | 2.3 | 58 |
| SMAm - 3.5 mm m | 1601-1003 | 1.13 | 1.1 | 0.63 | 16 | 1.9 | 48 |
| SMAm - 3.5 mm f | 1601-1103 | 1.13 | 1.1 | 0.63 | 16 | 1.8 | 46 |
| SMAf - ETNCm | 1601-0107 | 1.13 | 1.1 | 0.63 | 16 | 1.8 | 46 |
| SMAf - ETNCf | 1601-0807 | 1.13 | 1.1 | 0.63 | 16 | 2.3 | 58 |
| SMAf - Nm | 1601-0207 | 1.11 | 1.08 | 0.79 | 20 | 1.8 | 46 |
| SMAf - Nf | 1601-0907 | 1.11 | 1.08 | 0.63 | 16 | 2.3 | 58 |
| SMAf - 3.5 mm m | 1601-1007 | 1.13 | 1.1 | 0.63 | 16 | 1.8 | 46 |
| SMAf - 3.5 mm f | 1601-1107 | 1.13 | 1.1 | 0.63 | 16 | 1.8 | 46 |
| SMAm - SMAf | 1601-0307 | 1.13 | 1.11 | 0.63 | 16 | 1.8 | 46 |
| SMAm - SMAm | 1601-0303 | 1.13 | 1.11 | 0.63 | 16 | 1.8 | 46 |
| SMAf - SMAf | 1601-0707 | 1.13 | 1.11 | 0.63 | 16 | 1.7 | 43 |
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