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

(This data was collected 20-Nov-20
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 BrandRadio ModelAppNote Date
298.pdfBK / RelmKNG-M150Nov 25, 13
304.pdfBK / RelmKNG-M500June 1, 15
290.pdfDatronGuardian G25RMV100Jun 29, 10
280.pdfEF Johnson5300 ES Series MobileFeb 16, 09
221.pdfEF Johnson5300 SeriesOct 09, 01
259.pdfEF Johnson5300 X SeriesJun 12, 06
192.pdfEF Johnson7100 Series MobileApr 13, 98
233.pdfEF Johnson7100 Series MobileAug 27, 03
175.pdfEF Johnson8600 Series TrunkingJun 20, 96
195.pdfEF Johnson9800 Series MobileOct 19, 98
234.pdfEF JohnsonSummit Series / 800MHZOct 15, 03
202.pdfEF JohnsonSummit Series MobileJun 23, 99
194.pdfEF JohnsonViking GT Series MobileOct 19, 98
178.pdfHarrisDelta S/Rangr w/S550 ControlJul 1, 96
225.pdfHarrisEDACS 500MApr 25, 08
161.pdfHarrisEDACS Rangr w/S825 ControlOct 3, 97
241.pdfHarrisM7100Apr 19, 04
281.pdfHarrisM7300Apr 6, 09
162.pdfHarrisMDX ConventionalMay 23, 96
176.pdfHarrisMDX TrunkingMay 23, 96
191.pdfHarrisMLS Series MobileJan 20, 98
206.pdfHarrisOrion 800 MHz EDACSSep 9, 99
165.pdfHarrisOrion Dual BandDec 17, 97
232.pdfHarrisOrion EDACS Dash MountAug 20, 03
163.pdfHarrisOrion Single BandDec 16, 97
217.pdfHarrisOrion VHF EDACSNov 28, 00
303.pdfHarrisUnity XGM-100 w/ CH-100Aug 13, 14
260.pdfHughes / MSV MSAT G2 /w MSAT-200 Interface ModuleApr 11, 06
283.pdfHYTTM-800Aug 29, 09
300.pdfHyteraDM-782GAug 21, 13
257.pdfICOMF121 / F221Mar 13, 07
258.pdfICOMF1700 SeriesMar 22, 06
286.pdfICOMF5021, F6021Oct 28, 09
278.pdfICOMF5061 / F6061Jan 12, 08
314.pdfIcomF7510 P25Aug 28, 17
288.pdfICOMF9511/ F9521 Series P25Mar 22, 10
310.pdfKenwoodKenwood Viking VM500 and VM900Feb 28, 17
313.pdfKenwoodKenwood Viking VM600 and VM900Nov 8, 18
276.pdfKenwoodNEXEDGE NX Series (NX-700/800/5000)Jun 13, 08
301.pdfKenwoodNEXEDGE NX-720H / NX-820HOct 3, 13
317.pdfKenwoodNX-3720 and NX-3820Dec 28, 17
196.pdfKenwoodTK x90 Series MobileDec 6, 99
252.pdfKenwoodTK-5710 Analog or P25Nov 20, 06
289.pdfKenwoodTK-5720 / TK-5820 P25Apr 6, 10
215.pdfKenwoodTK-6110 Low BandAug 28, 00
183.pdfKenwoodTK-620/720Aug 30, 96
167.pdfKenwoodTK-705/805Jan 2, 96
284.pdfKenwoodTK-7102, TK-7108, TK-8102, TK-7108Oct 28, 09
207.pdfKenwoodTK-715 Reginet MPTNov 1, 99
228.pdfKenwoodTK-7150 / Tk-8150Dec 16, 04
250.pdfKenwoodTK-7160 / TK-8160Jun 02, 05
246.pdfKenwoodTK-7180 / 8180 w/ Local Mic RepeatOct 18, 05
287.pdfKenwoodTK-7302, TK-8302, TK-7360, TK-8360Nov 18, 09
181.pdfKenwoodTK760/860 mobileAug 30, 96
214.pdfKenwoodTK-760G/860G MobileMar 12, 02
151.pdfKenwoodTK-930Jun 12, 96
156.pdfKenwoodTK-940/941Jun 12, 96
311.pdfKenwoodTK-D740 / TK-D840Mar 20, 17
148.pdfKenwoodTK-x30 Series dual bandNov 13, 96
147.pdfKenwoodTK-x30 Series single/dual controlNov 13, 96
226.pdfKenwoodTK-x80 /w Local Mic Repeat SupportSep 15, 03
201.pdfKenwoodTK-x80 Series MobileJun 18, 99
205.pdfKenwoodTK-x90 Dual BandJul 6, 99
315.pdfKenwoodViking VM5000 and VM6000Aug 30, 17
319.pdfKenwoodVM5000 and VM6000 EVRSJul 9, 19
193.pdfMaxon2450 Series MobileAug 7, 98
198.pdfMaxonSM 4150Nov 19, 98
188.pdfMidlandSyntech (older)Jun 23, 97
164.pdfMidlandSyntech IIJun 12, 96
236.pdfMidlandSyntechII Remote MountApr 23, 04
203.pdfMidlandTitan MobileJul 2, 99
169.pdfMidlandXTR Dash MountFeb 5, 96
294.pdfMotorolaAPX High Power with Smart CableJun 8, 11
293.pdfMotorolaAPX Mid/Low Power with Smart CableJun 8, 11
318.pdfMotorolaAPX-8500Jun 1, 19
270.pdfMotorolaAstro Spectra High Power with Smart CableMar 5, 08
265.pdfMotorolaAstro Spectra Mid/Low Power with Smart CableFeb 7, 07
248.pdfMotorolaAstro Spectra Plus High PowerMar 10, 05
247.pdfMotorolaCDM Series w/ Scholer Johnson Passport OptionFeb 18, 05
227.pdfMotorolaCDM1550 LS+ PassPortOct 21, 02
208.pdfMotorolaCDM-750/1250/1550Apr 27, 00
271.pdfMotorolaCM-300Jun 2, 07
182.pdfMotorolaGTX / LCS-2000 TrunkingOct 17, 01
209.pdfMotorolaiDEN M Series (LM2000)May 8, 00
158.pdfMotorolaMaratrac w/A7 ControlApr 6, 99
171.pdfMotorolaMaxtrac TrunkingFeb 15, 96
153.pdfMotorolaMaxtrac w/o accessory connectorJun 12, 96
267.pdfMotorolaMCS-2000 with Smart CableFeb 07, 07
179.pdfMotorolaMicorJul 12, 96
168.pdfMotorolaMitrekJan 29, 96
216.pdfMotorola Motorola Spectra High Band/High Power direct PCB InterfaceApr 12, 01
272.pdfMotorolaMOTOTRBO XPR SeriesAug 7, 07
155.pdfMotorolaMoxyJun 12, 96
274.pdfMotorolaPM-1200 Low BandApr 24, 08
244.pdfMotorolaPM400Dec 14, 04
160.pdfMotorolaRadius SeriesFeb 22, 05
224.pdfMotorola Spectra - Astro High Power (also see 270.pdf)May 21, 02
223.pdfMotorola Spectra - Astro Low Power (also see 265.pdf)Jan 18, 02
149.pdfMotorola Spectra High PowerMar 25, 05
204.pdfMotorolaSpectra Low/Mid PowerFeb 22, 05
159.pdfMotorolaSpectra Low/Mid Power w/ HLN6094B BoardFeb 22, 05
146.pdfMotorolaSyntorAug 28, 95
172.pdfMotorolaSyntor X 9000Apr 9, 96
302.pdfMotorolaXPR2500 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 Power w/
Millennium Ctrl Head (New Style) (also see 266.pdf)
Jan 18, 06
268.pdfMotorola XTL-1500/2500/5000 PM-1500 Mid/Low Power with Smart CableFeb 7, 07
187.pdfRegencyRV60BJun 1, 97
255.pdfRelm / BKDMH DigitalDec 6, 05
152.pdfRelm / BKEMV w/9 pin accessoryJun 12, 96
157.pdfRelm / BKEMV/EMH w/15 pin accessoryOct 1, 96
177.pdfSEAESP504/520Jun 6, 96
213.pdfSEAESP-604Jul 18, 00
180.pdfSecuricor220MHz MPT TrunkingAug 28, 96
210.pdfSecuricor4115 MobileJun 9, 00
235.pdfSecuricorTitan Low band 70-0671CApr 23, 04
312.pdfSimocoSDM730Apr 28, 17
219.pdfStandardGX4800/5800/5850Dec 08, 00
200.pdfTaitT2020 Conv MobileMar 26, 99
239.pdfTaitT8115 TaitApr 29, 04
263.pdfTaitTM-8200Dec 13, 06
279.pdfTaitTM-9100 P25Feb 4, 09
306.pdfTaitTM9300 DMRJan 4, 16
307.pdfTaitTM9400 P25Feb 22, 16
173.pdfUnidenIMH-4100 DApr 30, 96
186.pdfUnidenSMS-825 TSMar 15, 97
190.pdfVertex4/12 Channel New Logic BoardOct 24, 97
154.pdfVertex99 channelJun 29, 97
150.pdfVertexFTL-x011 4/12/24 channelOct 24, 97
261.pdfVertexVX-2200Oct 24, 06
199.pdfVertexVX3000 MobileJun 11, 99
275.pdfVertexVX3200 VHF/UHFJun 9, 08
229.pdfVertexVX-4000 Single Band / Single Head Config.Feb 07, 03
240.pdfVertexVX-4200Aug 27, 04
282.pdfVertexVX-5500May 5, 09
231.pdfVertexVX-6000 Single Band / Single Head VHFJul 15, 03
285.pdfVertexVX-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.