After Vietnam there were a number of lessons learned regarding the, (and their vehicular versions) and the radios which led to the Single Channel Ground and Airborne Radio System (SINCGARS) concept for the next generation squad radio. This web page is newer than the web page and eventually they will be different, but for now there may be some duplication.

Comparison with PRC-77 (with battery box & battery) PRC-77 RT-1439 H' x W' x D' 4 x 11 x 11.25 3.5 x 9 x 14.75 weight lbs 17 lbs* * with battery, but without handset and antenna. Frequency Hopping (FH) A major new capability is the ability of the SINCGARS radios to frequency hop covering the 30 to 87.975 MHz band in 2,320 channels. This is not done as a Transmission Encryption security measure, like is provided by the, but to prevent jamming and direction finding. The PRC-25 & PRC-77 are susceptible to jamming since they are single frequency at a radios. The 225 to 400 MHz aircraft band radios now use Have Quick which is a similar frequency hopping scheme for the same reason. MIL-STD-200 - System Design and Engineering Standards For Tactical Communications Interoperability & Performance Standards For Tactical Single Channel Very High Frequency (Vhf) Radio Equipment contains specific performance requirements for both voice frequency and wideband (digital) channels. In my opinion, older DF sets that use a conventional receiver channel will have trouble DFing a frequency hopping radio, but DF sets that use what amounts to a spectrum analyzer can DF a frequency hopping radio, and probably can de-interleave a number of them, so the anti DF part of the reason for frequency hopping is not too strong.

The PLGR and Garmin are exactly opposite of each other. Trimble users. Downloading waypoints (in the ASCII-OUT mode / SERIAL set to Standard) the PLGR outputs them all in the datum you choose on display. You will also need a download cable for your receiver and an available COM port (prefer Com1).

Note that SINCGARS uses about 100 hops per second, which is considered a slow hop. It is not a direct sequence spread spectrum system like is used by GPS.

Once a FH radio has been located by DFing then it's possible to jam it. Not by knowing the hop sequence, but by listening for each new transmission (like using a very fast spectrum analyzer) and then jamming that transmission, then the next, and so on. So the advantage of Frequency Hopping against a sophisticated enemy has a short life.

The next generation radios will probably be either fast hoppers or direct sequence spread spectrum types. GPS is designed so that all the satellites transmit in the same frequency band and the receivers separate them by using different pseudo random codes that are designed to all be mutually orthogonal. Meaning that they have minimal interference with each other (minimal cross correlation).

The SINCGARS radios don't have that capability and so when a number of them are co-located there are times when two nets will use the same frequency at the same time causing a collision. This can become a problem. Note that if the hopping bandwidth is narrowed the anti jam resistance is lowered in direct proportion to the bandwidth reduction, so that's not a good thing to do. It's more probable that interleaved hop sets are used. Although it's theoretically possible to have an analog voice signal on top of a slow hopping carrier it's not as good as using a digitized voice (or data) signal on top of the slow hopper. This way there can be some overlapping and redundancy in the digital data, similar to what's done on a music CD that can tolerate a small scratch.

In the SINCGARS it's called forward error correction. The ECCM module works in two ways. One relates to choosing which RF frequency is to be used and the other related to converting from analog voice to digital and back from digital to analog.

In order for frequency hopping to work each radio in a network must be setup with the parameters that allow all of them to work together. The channel hop set determines what frequencies will be used and is selected in positions 1 through 13 of the Fill Device. The Transmission Security Key (TSK), T1, T2 or T3 on the, provides the key to be used by the pseudo random generator to determine in what order the hop set will be used. There is also a provision to have a list of excluded or protected frequencies that will not be part of the hop set. The Date and Time must also be set to within about a second in order synchronize the hopping. This can be done using the or can be done manually if the time is accurately know.

In a practical net the Net Control Station (NCS) sets the date + time in the channel used by the net stations. Each of the 6 channels can have a different 'net time'. The channel 'ID' number is an offset into the period of the hop set. So there can be a number of different nets all using the same hop set and TSK and set to the same date & time.

The various keys are loaded using the AUDIO/FILL connector and can also be loaded over the air if a higher level Key Encryption Key (KEK) has already been loaded into the radio. Communications Security (COMSEC) COMSEC is handled on the RT-1439 using the same that was used with the and/or radios.

And when the RT-1439 is used in the single channel mode it can inter operate with a PRC-77 in either plain text or secure modes. Later models of the SINCGARS radios have internal COMSEC (KY-57) capability (ICOM). Note that the MX-18290 can not load the KY-57 key so a separate is needed for that or the key can be loaded over the air.

Data Modes Although the PRC-77 can handle 16 k bits per second digital data it can not accept any of the common digital data connections that a PC can use. The SINCGARS radios have a connector that directly supports a number of synchronous and asynchronous data modes. These data modes can be audio tone based like a fax or modem or can be digital signal levels like from a teletype machine or a computer serial data port. The System Improvement (SIP) and Advanced SIP (ASIP) radios support RS-232 data and Internet Protocol (IP) data packets. Batteries Main The PRC-25 and PRC-77 used the BA-4386 style battery (or my ). But as part of a U.S.

Military battery standardization program the SINCGARS radios (and many many other military electronics devices) use the (or my ), or any of the rechargeable versions (BB-390, BB-590, BB-2590, etc.). Note that the CY-8523() Battery Box connects the battery as a '12 Volt' battery rather than as a '24 Volt' battery. This means that a SINCGARS radio can be powered from a civilian '12 Volt' motor vehicle, but not when in a Mount that needs military vehicle '24 Volt' power. The RT-1523A and RT-1523D (EGTN version) with the Li-Ion BA-2590/U battery. It's 16.5 volts is too much for these radios.

Hold Up Battery (HUB). The BA-5372/U (NSN 6135-01-214-6441) is installed on the bottom of the RT-1439 and the front of an RT-1523(nc/A/B/C/D). There are two (-) screws holding the cover which has a white area where the BATT INSTL date can be written. Note that inside the cover there's a insulating washer. If the HUB is installed correctly with the tit contacting the cover it will work, but if installed upside down the flat part of the battery will contact the insulating washer and so will NOT make electrical contact.

The HUB maintains the CMOS memory and clock in the radio when the main battery pack is removed or vehicle power is lost. It also keeps the memory and clock alive when the radio is switched to OFF.

But when the FCTN switch is set to Stow (STW) the HUB is turned off and all memory is lost. This is good in that is does not run down the HUB battery when it's not needed. Unfortunately the labeling of the Function switch is backwards between the RT-1439 and the RT-1523() radios.

On both radios when the FCTN switch is fully CCW (called OFF on the RT-1439 and STBY on the RT-1523) the HUB battery is maintaining the clock and all the channel fill data. On both radios when the FCTN switch is turned full CW (called STW on the RT-1439 and OFF on the RT-1523) the HUB battery is disconnected saving the battery but erasing all the memory and stopping the clock. So the instructions in the Aug. 1998 PS mag article on pg 48 apply only to the RT-1523 radios.

Note the HUB battery has a negative tit unlike most common batteries. It's a 6 Volt battery so trying to substitutive a 3 Volt BA-5123/U or some other battery just will not work. For the RT-1439 used in a vehicle mount it's a good idea to add a label to the front panel with the HUB battery install date.

This avoids taking apart the system just to see the date and rebuilding the system if a battery change is not needed. The correct interval is every 6 months. Ref June 1998 PS mag pg 48. Mar '94 & PS mag 496 pg 36. The RT-1523E can use Battery holder NSN 6130-01-462-4442 and four common AA batteries for the HUB function. If a FAIL-Number message appears and the FCTN switch is moved to any other position and any keyboard button is held down while turning the FCTN switch back to TST a new self test is started, but now instead of a FAIL-# message the message is a preamble number some dashes and a detail number. For example the Normal Self Test shows FAIL 2 and the Diagnostic test shows 2--01.

TM 11-5820-890-30-5 Chapter 2 has some information on how to interpret the self test results, but seems to be missing the diagnostic 2--nn and higher number messages. If you have that manual please let me know. In general all the 890 series manuals are very poor regarding explaining what the FAIL # messages mean, especially ones where the operator could correct the failure.

Adjustable Output Power. There appears to be about a 20 dB change between LO and M and a 10 dB change between M and HI, an overall change of 1,000 times in power. This is the same amount of change that occurs between using a 1 meter whip and a rubber duck antenna on a radio. Schedule Builder Tool.

The signal is not a single carrier when no audio input is fed to the mike since the radio is sending a 150 Hz tone. Deviation is about 7.5 kHz without any audio input. The channel frequency is right on at 51 MHz. The current draw for the 'HI' power position is more than 3 Amps (it trips the over current limit on the BK Precision 1786 P.S.). Leaving Turned On.

The LED SIG and frequency displays turn off after a short time to conserve battery power, but then the radio is dark and it's easy to leave it turned on thus draining the battery. It might be better if one of the LEDs were to flash every so often to remind you that the radio is powered and that the main battery is OK. The LED to flash is the battery gauge reading on the SIG display.

When Powered from a Vehicular mount the display time out is disabled and the display stays lit. Brightness can be controlled by the DIM knob. No Fills are needed for Single Channel operation. In order to Frequency Hop there are different amounts of fill required depending on the circumstances. The simplest case is that you are a member of a net (and not the Net Control Station).

Then all that's required is to load the CUE and MAN single channel frequencies as well as the net's Transmission Security Key and request an Electronic Remote Fill (ERF) from the NCS. The NCS can load the hop set (with lockout set if needed) and the correct net time remotely. These can then be stored into one of the channels (typically chan 1 for your local net).

This is the same procedure that's used for a normal net opening. If your radio already has the TSK and hopset for the net and the clock for the net channel is reasonably accurate, then you can do a late net entry by setting the radio just like when it's part of the net and pressing '3-L.E.' (Late Entry). This causes your radio to search in time to exactly match the net time and when in sync the frequency display will change from LFnnn (Late Frequency hop set nnn) to just Fnnn (Frequency hop set nnn) and if there's net traffic you will hear it. This will not work if your radio's clock is too far off or if the net ID number or any of the fills is not correct. Fills Prior to filling load the MAN and CUE single channel frequencies.

Manual Set Time & Date Set FCTN = LD Press 'TIME' and enter the Julian day number (1 to 99) based on the table in the back of the manual (note there are two tables, one for normal years and another for leap years), press 'Sto Ent', enter the 2 hours digits, press 'Sto Ent', (This last press sets the seconds to 00). 1 Jan is always 01, 28 Feb is always 59, Feb 29 is 60, 1 March is 60 in a regular year and is 61 in a leap year, and all the rest of the days follow. 27 Oct in a regular year is day 00, and in a leap day 00 is Oct 26.

PLGR AN/PSN-11 GPS Time & Date Set TM 11-5820-890-10-7 which includes the PRC-119A (RT-1523) has a Task 3 'Load PLGR Data and Zulu Time into SINCGARS RT'. There's no mention that the RT-1439 does not support this fill, but when I try, it does not work. (error in PLGR says radio not responding). FM 11-1 says PLGR only works with RT-1523A and higher letter radios and the ARC-201A. Can only load FH data into the RT-1439 and the ARC-201 (not any of the RT-1523 series radios and not the ARC-201A). TM 11-5820-890-10-3 which applies to the PRC-119(no letter), i.e.

To the RT-1439, describes how the NCS is to either manually set the time and date or use Electronic Remote Fill from another network, no mention of using a PLGR. This procedure worked on the RT-1523C to load date and time from PLGR: Set the radio to SC and set to CT. Select SINCGARS under the MENU key of the PLGR, select ACTIVATE on the PLGR, then LOAD on the RADIO. LOAD displays on the radio, and PLGR displays SUCCESSFUL TIME FILL. Sure enough had the correct julian day on the radio and UTC time.

Frequency As the CHAN switch is moved from MAN through 1 - 6 to CUE in SC mode (FCTN any pos) if there are no frequencies loaded the display will show: 30000 (default MAN freq), FILL 1 through FILL 6 and FILL 7. But if the HRCRD is used to scan those same channels the display will show FILLE on all but the CUE channel which shows FILL 7. Below the display between the second and third digit from the left is printed a decimal point that separates the MHz part of a single channel frequency from the lessor digits. The smallest frequency step is 5 kHz, so you can load 30.125, but not 30.123. The SINCGARS are much more restricted than the PRC-126 in that the offset between Tx and Rx frequencies is limited to +/- 5 or 10 kHz in the SINCGARS but the PRC-126 has no restrictions. This limits the flexibility of how the radio is used, for example with the PRC-126 you could program the Tx frequency to be the input to a repeater and the Rx frequency to the the repeater output.

TSK If the Transmission Security Key has been loaded but neither a hop set nor a lockout set has been loaded the display will show cold. Hop Set As the CHAN switch is moved from MAN through 1-6 to CUE in FH mode (FCTN any pos) if there are no hop sets loaded the display will show: FILLE on all channels. If there's a Hop Set loaded the display will show Fnnn (Hop Frequency net ID number nnn). If the Lockout set has been loaded but the hop set has not yet been loaded the display will show HLncc. With a Hop Set loaded the display will show Fncc where the first letter is always F the second letter is the hop set ID and the cc is the net ID between 0 and 99.

The set starting time can be changed by the NCS when in FH-M mode. Just after a hop set is loaded the display shows HFncc if the set was a Hop Set or HLncc if it was a Lockout set. Z-A A few seconds after switching to Zero-All the display shows good.

Meaning that all memories have been erased. Note you need to go through this switch position to get to STW on the RT-1439 (OFF on the RT-1523x) where power including backup battery is disconnected. Cue allows a radio that is not part of a FH net to get the attention of the NCS when the net is idle even through the NCS is in a FH net. This probably works like a police scanner priority channel, i.e. The radio checks the Cue frequency when in FH or FH-M mode and when the channel is idle.

The NCS (and alternate NCS) would hear any SC radio sending on the Cue frequency. Another feature of Cue is that if the channel is changed to Cue, then to MAN and back to the net channel, it can passively rejoin the net probably without the wait associated with a passive net entry. I think that only one station in a net may be set in FH-M mode. This is because the Master station is sending the net time to keep all the net stations in time sync. If two stations tried to do this the times would not match and there would be a problem. The alternate NCS would switch into FH-M mode if something happened to the NCS.

If this is the case then all the stations in a net (with that Cue frequency set into their radios) would be aware that a Cue call was in progress, but typically only the alternate NCS would switch to the Cue channel and talk to the calling station, which might be a VRC-12 Series or PRC-77 radio. The instructions for how to make a CUE call are very consistent in that the calling station needs to turn off voice encryption.

And just press PTT (no voice call is being made). Since the calling station does not know when the net is idle the process may need to be repeated several times until an idle time is used for the call. The SINCGARS radio probably detects that there's a carrier on the CUE frequency and alerts the radio operator.

Note that although a SINCGARS radio can store 6 separate channels (6 nets) there is only one CUE frequency CHAN position and so the CUE frequency needs to be manually programmed for each of the 6 channels as does the MAN frequency. Versions & Configurations. RT-1523D(C)U NSN 58 981 RT-1523E - half size Advanced Special Improvement Program (ASIP) also a single radio can act as a packet repeater (sort of a digital version of a). Uses DSP technology that can be upgraded. The tactical communication system (TCS) handset replaces the HRCRD that displays the operators Lon-Lat and the received stations Lon-Lat. The radio really is a dual channel radio with both voice and digital coms at the same time.

Really a new radio. The GPS key controls how the radio transmits GPS data. GPS is set to OFF, voice only (AUTO), periodic (PER), or movement (MOV), and can only be modified in CT.

Periodic and movement modes automatically generate short GPS-data-only transmissions. RT-1523E and Radio sets that use it = TM 11-5820-890-20P-2 all ASIP made by ITT. RT-1523E(C)/U NSN 58 219 RT-1523F Improved version of the E. RT-1523F(C)/U NSN 5820 0 15353 667 ITT vs GDLS I've heard that although the ITT and GDLS radios are functionally equivalent the internal construction is completely different and non interchangeable. This means that extra care is needed to correlate the exact model number with the manual when trying to understand the inner workings of a radio. Module layouts.

The 1439 and 1523 have the modules both left to right and front to back(LRFB). The 1523A and 1523D have the modules all lined up like books front to back(Book). It maybe like this: ITT: 1439-LRFB, 1523-LRFB, 1523D-Book, 1523E-half size new radio GDLS: 1523A-Book, 1523B-Book, 1523C-Book 7 June 2005 - ITT says they made all versions except for the 1523D. Have not yet heard back from GDLS. VRC-87 Short Range VRC-88 Short Range optional man pack VRC-89 Long Range - Short Range VRC-90 Long Range VRC-91 Long Range - Short Range optional man pack VRC-92 Long Range - Long Range The stack of equipment for SINCGARS is very similar to that for a ( in a vehicle). In comparison photo you can see that the VRC-87 is about as wide as a PRC-77. The SINCGARS radios are narrower, shorter and heavier than the PRC-77(VRC-64).

VRC-64 SINCGARS SINCGARS SINCGARS Function RT-1439 or RT-1523() RT-1439 or RT-1523() - Receiver Transmitter Low Power PS/Adapt () PS/Audio Amp AM-7238() RF Amp DC power conditioning DC power cabling & /or VIC/TSEC interface Steel mounting shelf Steel mounting shelf NSN 5340-01-215-1044 for HMMWV Steel mounting shelf NSN 5975-01-413-1547 for M998 Steel mounting shelf Mechanical attachment to vehicle sheet metal Tracked. System Connector Pin DC Func Audio Func PA Ctrl Func - FHMUX Func A Test B?

C Serial Data D Fixed Level E Tx voice F Batt +15 G Tune Clock H Hi Power (amp on) J Pwr Level K PT/CT select L Filter B (43 - 61.5) M Filter A (30 - 43) N Tx/Rx P Disable Q FH R Fault 6 1 S PTT T /Tune Gate U BA-x90/BB-x90 Batt used by Tray V Filter C (61.5 -88) W? X sidetone disable Y wire line rem Z Gnd (Batt) a wire line rem b? D Batt/Adapter sense Note 1 Fail 6 is an input for other equipment to report their self test failure during an RT self test. SINCGARS Antenna Connector The antenna connector is a BNC Jack (female) with a surrounding shroud that has external threads. A BNC nut is about 0.570' diameter and the I.D. Of the shroud is a little larger. The shroud OD is about 0. Game For Samsung C3312 Free Download. 8' and 20 TPI.

This may be the same antenna connector used on the PRC-117 and PRC-138? Do not use a knife to clean twigs out of a vehicle antenna spring since doing so may cut the coax cable inside the spring. Ref Mar 94 PS mag 496 pg 36. On the early model RT-1439 that had the solid front panel protectors or the ones with a small hole it was almost impossible to connect a straight BNC cable. The fix is to use a right angle BNC connector (UG-306B/U NSN 5935-01-032-5404) Ref: July 93 PS mag 488 pg 44. The 11 3/4' long flex base (A3140084-2) accepts the threaded tape whip antenna and has a combined 1&3/16'-20 female thread and a BNC-m connector. But instead of using a BNC nut the flex base has two slots for the lugs on the radio BNC-f jack.

This BNC connector also has an extra long male pin (or you can say that the dielectric is recessed more than a normal BNC connector. This is so that when the flex base is installed it will NOT press on the radio BNC dielectric (switch). The SINCGARS radios have an antenna switch that's similar to the one on the and radios. But instead of using panel space for both a whip antenna and for a BNC connector for a 50 Ohm antenna the SINCGARS radios combine these into one connector.

When the A3140084-2 is installed the switch is NOT activated and when a standard BNC-m connector is installed the switch activates and the radio switches into 50 Ohm mode. A3140084-2 shown at left. TM 11-5820-890-20P-1 Figure 2 The A3140084-1 that was made by Unicor had a breakage problem. It has a visible spring at the base end.

AS-3916 Low Profile (SLPA) Ant Vehicular AS-4266 Long MP Ant. This antenna needs to present the radio a reasonable match while the radio is in frequency hopping mode. The (part of vehicle radios) that used mechanical switches to adjust the match is way too slow for a frequency hopping radio and so this antenna uses a matching circuit that also has loss. TM 11-5820-890-20P-1 Figure 107 Built in protection up to 20,000 Volts A.C. Lock washers needed both above and below each attachment bolt and on the ground strap for good electrical grounding. Ref Oct '96 PS mag pg 38.

Tip Cap NSN 5820-00-437-2352 will stay on without tape. Ref 1999 PS mag 564 pg 61 Do NOT paint the AS-3900 plastic antenna base. The paint will breakdown the plastic. Ref Feb '96 PS mag pg 35. In vehicle installations connecting to the LS-671 is closer to the driver than the power supply/adapter so the cord will not be pulled as much. Ref Aug '97 PS mag pg 36.

& May '94 498 pg 48. Stepping out of a HMMWV and pulling the H-250 handset cord can break connections. A safety measure is to cut a 3 foot length of nylon cord and tie one end to the LS-671 and tie the other end around the handset just above the mike. This will limit the cord extension to a safe amount. Also a closeline made from the same cord and tied to the front canvas bow and hang the H-250 up and out of the way of damage. Ref July 995 PS mag 512 pg 44.

Another way to keep the H-250 handset up and out of harms way is to use Velcro to attach it the Mount. Ref Mar '95 PS mag 508 pg 42. The problem is the clip designed for the H-250 puts it in the way of belt worn equipment (m-17, M-40) when the driver sits down. HRCRD (Handheld Remote Control Radio Device) Handset C-12493/U The main purpose is to allow the radio in a man pack configuration to be controlled by the operator without removing the pack to get access to the front panel. Can also be used with vehicle configurations for more convenient access to the most frequently used controls. Uses the 6-wire protocol with 2880 Hz FSK data and straight through audio. This will work with the RT-1439 since it's related to the revision of the battery box and the only connection is the wire line remote control, the HRCRD uses the same audio signaling system as the CTRL-MON.

Manpack: connect cables to RT-AUDIO and CY-8523C Vehicle: connect one cable to RT-AUDIO and for RT-1523E use AUX or with use J9 CTRL-MON. This also means that a PC could do this function with software/hardware that emulated the tone functions. This is an amplified speaker that interfaces using the standard VIC-1 cable (). The LS-671 can be connected to a handset (or microphone) and used for receive and transmit operations. It can turn the main DC power to the Mount & RT on and off. It can be located up to 100 feet from the RT providing a limited remote control capability. Note that if the LS-671 is left on and the Mount is turned off the LS-671 stays on and drains the vehicle battery.

Best to leave the Mount turned on and just switch the speaker. (Ref: PS Mag April '04 Vol 616 pg 43) Also be sure to fully unscrew the cable wing-nut BEFORE trying to remove the connector. Otherwise the struggle to get it off probably will break something inside the speaker. (Ref: PS mag 2003 621-44) Also do NOT twist the connector assembly for the same reason (PS mag Sep 2002 598 pg 43). The Volume control on the LS-671 can be used to control the connected handset when in the normal position and when pulled out controls the speaker volume. Don't forget to pull it out. Ref Jan '97 PS mag pg 50.

J1 on the LS-671 is the standard 18 terminal type connector and mates with the 'VIC' cables. You should be able to use the LS-671 in any system that has the VIC-1 connector, like the series radios that use the mount which has the connector.

When the LS-671 is connected using a VRC-12 series radio (VIC-1) cable to the it works as a speaker and audio feed to a handset connected to it, but does not allow keying the transmitter. The reason is that the proper cable is not symmetrical and has the PTT line on different pin for the speaker end and the mount end, unlike the that is a symmetrical (1:1) cable. See TM 11-5820-890-20-01 Chapter 4 Cables, p4.2 Speaker Cable schematic. There may be a need for the CX-13314 cable (-J1(TEST) and the RT AUDIO/DATA connector with only 1 wire for PTT. The combined LS-671 + may work with VRC-12 series mounts. The On-Off switch on the LS-671 turns the speaker on or off, but not the mount.

This is because the screwdriver switch that's between the radio and the mount was set to LOCAL, changing it to REM allows the LS-671 to control mount power, which is the recommended way to use the LS-671 so that both the speaker and mount are turned off (so as to not drain the vehicles battery when the radio is not in use). On the front of the LS-671 is a clip for holding the H-250 handset. On the back is a mounting bracket that allows the LS-671 to be removed by loosening the two large knurled screws. Why is this done? Ans: the LS-166, LS-454 have wing nuts that allow you to remove them so that they can be used away from a vehicle, like in a tent. The LS-671 can be connected to the Mount J3 or J4. Manuals: TB 11-5820-890-10-14 LS-671 TM 11-5820-890-30-4 Ch 16, FO-30 schematic TM 11-5820-890-20P-1 Figure 119 Submitted by Series 5200 padlock.

In order to use the LS-671 you need the cable. I finally got one from eBay and it came with an American Lock padlock attached and a bracket marked: 80063-A3256667-2 MFR-31550 My local locksmith will rekey the padlock for about $8 (he says it will take 10 minutes and the lock is worth about $20. This series of locks can have the 5 pin tumbler for rekeying. One locksmith in town could not rekey the padlock because I did not have a key. Note that when the hasp is open you can see a philips head screw down in one of the holes, which when unscrewed frees up the tumbler.

The other locksmith in town had no problem grinding off the rivet and taking the lock apart, but when it came time to pick (using a shim) the tumbler in order to fit a key, he was delayed for some time since each pin has grooves that making using a shim very difficult. But in the end I now have the same lock and a coupe of keys. The keys have a 5 digit number (one for each pin) that would allow duplicate keys to be ordered. Note that these numbers can be punched out of the key. If left in the key and someone gets them then the key is comprised. In the Series 5200 padlock photo you can see that at the back of each key there's a 'fish hook'. This holds onto the key when the lock is open.

The only way you can remove the key is after it's locked. Lock installed between left bracket that's part of the and the left front panel grab handle on the RT-1439 trapping the. CX-13292 Speaker Cable The military vehicle connector has a metal part added that puts a bend into the cable. Note that the cable has two different ends, one for the speaker and one for the radio and will not work if installed reversed. There are labels on the cable, but on the very used cable I got the su.