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  Pyramid Communications
Vehicular Repeater Interfacing
and Connection Information
(Application Notes)

(This data was collected 20-Jun-16
and is subject to change.)

Compiled by Robert W. Meister WA1MIK
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The Pyramid SVR-200 and SVR-250 Vehicular Repeaters are small microprocessor-controlled half-duplex radio transceivers with tone encoders and decoders. They can be easily interfaced and connected to many mobile radios. Nine wires are used to provide power, ground, control, and audio signals.

SignalNotes
12V InDC Power Input
COR InReceive COR Signal From the Mobile Radio
Enable InRemote Enable or Disable via External Switch
GroundAudio and Power Ground
Local Mic Audio InAllows local transmit without a remote radio
On Air Detect InTells the SVR that the Mobile Radio is Transmitting
PTT OutPTT Signal To the Mobile Radio
RX Audio InReceive Audio From the Mobile Radio
TX Audio OutTransmit Audio To the Mobile Radio

Of these nine signals, the ones that are needed by most repeaters are:
TX Audio Out, PTT Out, RX Audio In, COR In, 12V In, and Ground.

While the vehicular repeater may not be of much use to people building amateur repeaters, the interfacing information on Pyramid's web site does contain a lot of very useful and well thought-out wiring and configuration data. As you can see in the list below, most of their application notes are aimed at Motorola equipment, but they do have a lot of other popular brands as well.

These vehicular repeaters are often installed in fire trucks. The first unit on the scene activates its unit and selects the appropriate channel on the attached mobile radio. The firefighters then use portable radios on a different band to communicate with the vehicular repeater. When the base station transmits, the mobile radio in the fire truck hears it and causes the vehicular repeater to transmit that signal to the portable radios. When a firefighter transmits on a portable radio, the vehicular repeater hears it and causes the attached mobile radio in the truck to transmit that signal to the base station. Think of it as a range extender.

These devices have another interesting feature. As each equipped piece of apparatus arrives on scene and activates their unit, the other units detect the newcomer and they go into standby mode, letting the newly arrived unit take over the task of repeating. When an active unit leaves the area or a unit is disabled, the previously active unit takes over. This is all done seamlessly and with no user intervention. For more information about how these units work, read the appropriate service manual, available on Pyramid's web site www.pyramid.com.

The majority of their application notes are aimed at Motorola equipment, but they do have information for a lot of other popular brands as well.

A very nice Introductory Overview can be found here.

AppNoteRadio Brand Radio ModelApp. Date
298.pdfBK / Relm KNG-M150Nov 25, 13
304.pdfBK / Relm KNG-M500June 1, 15
290.pdfDatron Guardian G25RMV100Jun 29, 10
280.pdfEF Johnson 5300 ES Series MobileFeb 16, 09
221.pdfEF Johnson 5300 SeriesOct 09, 01
259.pdfEF Johnson 5300 X SeriesJun 12, 06
192.pdfEF Johnson 7100 Series MobileApr 13, 98
233.pdfEF Johnson 7100 Series MobileAug 27, 03
175.pdfEF Johnson 8600 Series TrunkingJun 20, 96
195.pdfEF Johnson 9800 Series MobileOct 19, 98
234.pdfEF Johnson Summit Series / 800MHZOct 15, 03
202.pdfEF Johnson Summit Series MobileJun 23, 99
194.pdfEF Johnson Viking GT Series MobileOct 19, 98
178.pdfHarris Delta S/Rangr w/S550 ControlJul 1, 96
225.pdfHarris EDACS 500MApr 25, 08
161.pdfHarris EDACS Rangr w/S825 ControlOct 3, 97
241.pdfHarris M7100Apr 19, 04
281.pdfHarris M7300Apr 6, 09
162.pdfHarris MDX ConventionalMay 23, 96
176.pdfHarris MDX TrunkingMay 23, 96
191.pdfHarris MLS Series MobileJan 20, 98
206.pdfHarris Orion 800 MHz EDACSSep 9, 99
165.pdfHarris Orion Dual BandDec 17, 97
232.pdfHarris Orion EDACS Dash MountAug 20, 03
163.pdfHarris Orion Single BandDec 16, 97
217.pdfHarris Orion VHF EDACSNov 28, 00
303.pdfHarris Unity XGM-100 w/ CH-100Aug 13, 14
260.pdfHughes / MSV MSAT G2 /w MSAT-200 Interface ModuleApr 11, 06
283.pdfHYT TM-800Aug 29, 09
300.pdfHytera DM-782GAug 21, 13
257.pdfICOM F121 / F221Mar 13, 07
258.pdfICOM F1700 SeriesMar 22, 06
286.pdfICOM F5021, F6021Oct 28, 09
278.pdfICOM F5061 / F6061Jan 12, 08
288.pdfICOM F9511/ F9521 Series P25Mar 22, 10
276.pdfKenwood NEXEDGE NX Series (NX-700/800/5000)Jun 13, 08
301.pdfKenwood NEXEDGE NX-720H / NX-820HOct 3, 13
196.pdfKenwood TK x90 Series MobileDec 6, 99
252.pdfKenwood TK-5710 Analog or P25Nov 20, 06
289.pdfKenwood TK-5720 / TK-5820 P25Apr 6, 10
215.pdfKenwood TK-6110 Low BandAug 28, 00
183.pdfKenwood TK-620/720Aug 30, 96
167.pdfKenwood TK-705/805Jan 2, 96
284.pdfKenwood TK-7102, TK-7108, TK-8102, TK-7108Oct 28, 09
207.pdfKenwood TK-715 Reginet MPTNov 1, 99
228.pdfKenwood TK-7150 / Tk-8150Dec 16, 04
250.pdfKenwood TK-7160 / TK-8160Jun 02, 05
246.pdfKenwood TK-7180 / 8180 w/ Local Mic RepeatOct 18, 05
287.pdfKenwood TK-7302, TK-8302, TK-7360, TK-8360Nov 18, 09
181.pdfKenwood TK760/860 mobileAug 30, 96
214.pdfKenwood TK-760G/860G MobileMar 12, 02
151.pdfKenwood TK-930Jun 12, 96
156.pdfKenwood TK-940/941Jun 12, 96
148.pdfKenwood TK-x30 Series dual bandNov 13, 96
147.pdfKenwood TK-x30 Series single/dual controlNov 13, 96
226.pdfKenwood TK-x80 /w Local Mic Repeat SupportSep 15, 03
201.pdfKenwood TK-x80 Series MobileJun 18, 99
205.pdfKenwood TK-x90 Dual BandJul 6, 99
193.pdfMaxon 2450 Series MobileAug 7, 98
198.pdfMaxon SM 4150Nov 19, 98
188.pdfMidland Syntech (older)Jun 23, 97
164.pdfMidland Syntech IIJun 12, 96
236.pdfMidland SyntechII Remote MountApr 23, 04
203.pdfMidland Titan MobileJul 2, 99
169.pdfMidland XTR Dash MountFeb 5, 96
294.pdfMotorola APX High Power with Smart CableJun 8, 11
293.pdfMotorola APX Mid/Low Power with Smart CableJun 8, 11
270.pdfMotorola Astro Spectra High Power with Smart CableMar 5, 08
265.pdfMotorola Astro Spectra Mid/Low Pwr with Smart CableFeb 7, 07
248.pdfMotorola Astro Spectra Plus High PowerMar 10, 05
247.pdfMotorola CDM Series /w Scholer Johnson Passport OptionFeb 18, 05
227.pdfMotorola CDM1550 LS+ PassPortOct 21, 02
208.pdfMotorola CDM-750/1250/1550Apr 27, 00
271.pdfMotorola CM-300Jun 2, 07
182.pdfMotorola GTX / LCS-2000 TrunkingOct 17, 01
209.pdfMotorola iDEN M Series (LM2000)May 8, 00
158.pdfMotorola Maratrac w/A7 ControlApr 6, 99
171.pdfMotorola Maxtrac TrunkingFeb 15, 96
153.pdfMotorola Maxtrac w/o accessory connectorJun 12, 96
267.pdfMotorola MCS-2000 with Smart CableFeb 07, 07
179.pdfMotorola MicorJul 12, 96
168.pdfMotorola MitrekJan 29, 96
216.pdfMotorola Motorola Spectra High Band/High Power
direct PCB Interface
Apr 12, 01
272.pdfMotorola MOTOTRBO XPR SeriesAug 7, 07
155.pdfMotorola MoxyJun 12, 96
274.pdfMotorola PM-1200 Low BandApr 24, 08
244.pdfMotorola PM400Dec 14, 04
160.pdfMotorola Radius SeriesFeb 22, 05
224.pdfMotorola Spectra - Astro High Pwr (also see 270.pdf)May 21, 02
223.pdfMotorola Spectra - Astro Low Pwr (also see 265.pdf)Jan 18, 02
149.pdfMotorola Spectra High PowerMar 25, 05
204.pdfMotorola Spectra Low/Mid PowerFeb 22, 05
159.pdfMotorola Spectra Low/Mid Power w/ HLN6094B BoardFeb 22, 05
146.pdfMotorola SyntorAug 28, 95
172.pdfMotorola Syntor X 9000Apr 9, 96
302.pdfMotorola XPR2500 MOTOTRBOApril 4, 14
242.pdfMotorola XTL-1500/2500/5000 Mid/Low Power (also see 268.pdf)Mar 06, 06
251.pdfMotorola XTL-1500/2500/5000 PM-1500 High Power w/
Astro Control (Old style) (also see 266.pdf)
Jul 29, 05
266.pdfMotorola XTL-1500/2500/5000 PM-1500 High Power with Smart CableFeb 7, 07
256.pdfMotorola XTL-1500/2500/5000 PM-1500 High Pwr w/
Millennium Ctrl Head (New Style) (also see 266.pdf)
Jan 18, 06
268.pdfMotorola XTL-1500/2500/5000 PM-1500 Mid/Low Pwr with Smart CableFeb 7, 07
187.pdfRegency RV60BJun 1, 97
255.pdfRelm / BK DMH DigitalDec 6, 05
152.pdfRelm / BK EMV w/9 pin accessoryJun 12, 96
157.pdfRelm / BK EMV/EMH w/15 pin accessoryOct 1, 96
177.pdfSEA ESP504/520Jun 6, 96
213.pdfSEA ESP-604Jul 18, 00
180.pdfSecuricor 220MHz MPT TrunkingAug 28, 96
210.pdfSecuricor 4115 MobileJun 9, 00
235.pdfSecuricor Titan Low band 70-0671CApr 23, 04
219.pdfStandard GX4800/5800/5850Dec 08, 00
200.pdfTait T2020 Conv MobileMar 26, 99
239.pdfTait T8115 TaitApr 29, 04
263.pdfTait TM-8200Dec 13, 06
279.pdfTait TM-9100 P25Feb 4, 09
306.pdfTait TM9300 DMRJan 4, 16
307.pdfTait TM9400 P25Feb 22, 16
173.pdfUniden IMH-4100 DApr 30, 96
186.pdfUniden SMS-825 TSMar 15, 97
190.pdfVertex 4/12 Channel New Logic BoardOct 24, 97
154.pdfVertex 99 channelJun 29, 97
150.pdfVertex FTL-x011 4/12/24 channelOct 24, 97
261.pdfVertex VX-2200Oct 24, 06
199.pdfVertex VX3000 MobileJun 11, 99
275.pdfVertex VX3200 VHF/UHFJun 9, 08
229.pdfVertex VX-4000 Single Band / Single Head Config.Feb 07, 03
240.pdfVertex VX-4200Aug 27, 04
282.pdfVertex VX-5500May 5, 09
231.pdfVertex VX-6000 Single Band / Single Head VHFJul 15, 03
285.pdfVertex VX-7200Oct 28, 09

Contact Information:

Bob can be contacted at: his-callsign [ at ] comcast [ dot ] net.

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This page originally posted on Tuesday 07-Aug-2012.



This web page, this web site, the information presented in and on its pages and in these modifications and conversions is © Copyrighted 1995 and (date of last update) by Kevin Custer W3KKC and multiple originating authors. All Rights Reserved, including that of paper and web publication elsewhere.