Field and depot maintenance manual : distributor-transmitter set, teletypewriter AN/GGC-9.

Includes index.

Direct support and general support maintenance repair parts and special tools list (including depot maintenance repair parts and special tools) for receiver-transmitter radio RT-246/VRC, RT-246A/VRC, (NSN 5820-00-892-0623).

"31 January 1983."

DS, GS and depot maintenance repair parts and special tool lists : transmitter, radio T-195/GRC-19, T-195A/GRC-19, T195B/GRC-19.

"30 December 1965."

Direct support and general support maintenance repair parts and special tools lists (including depot maintenance repair parts and special tools) for receiver-transmitter, radio RT-505/PRC-25 (NSN 5820-00-857-0934).

Includes index.

Direct support and general support maintenance repair parts and special tools list (including depot maintenance repair parts and special tools) for receiver-transmitter radio RT-524/VRC and RT-524A/VRC (NSN 5820-00-892-0622).

Includes indexes.

Organizational maintenance repair parts and special tool lists : transmitter, radio T-195/GRC-19, T-195A/GRC-19, and T195B/GRC-19.

"28 July 1965."

Direct support and general support maintenance manual : receiver-transmitter, radio RT-718/FRC-93 (Collins KWM-2/2A) (NSN 5820-00-082-4080).

"May 1976."

Direct support and general support maintenance repair parts and special tools list for transmitter, radio T-1428/FRN (NSN 5895-01-099-3576), tuner, radio frequency TN-588/FRN (NSN 5895-01-107-2124), switching unit, power transfer ....

"5 July 1983."

Organizational maintenance repair parts and special tools list for transmitter, radio T-1428/FRN (NSN 5895-01-099-3576), tuner, radio frequency TN-588/FRN (NSN 5895-01-107-2124), switching unit, power transfer ....

"5 July 1983."

Direct support, general support or aviation intermediate maintenance (AVIM) : receiver-transmitter, radio RT-859A/APX-72 (NSN 5895-00-149-1319) using test set AN/APM-305A (NSN 6625-01-052-3881).

"5 January 1982."

Organizational maintenance : receiver/transmitter RT-1402A/G, (NSN 5820-01-238-0559).

Includes index.

Radio - Studio - Old - Equipment - Transmitter and Control Room - Radio History - First Broadcast from a Commercial Station - Early WWJ [Detroit News]

Keith Bemand, Elton Plank, Mr. Trumbull

Radio - Birthday Party - 15th Anniversary - Showing First Transmitter Ever Used

C.C. Bradner, Walter Hoffman, Wynn Wright, Ty Tyson, Harry Bannister, Herschel Hart, Jeff B. Webb, William Scripps, William E. Scripps, Warren S. Booth, Herb Ponting.

Differential involvement of N-type calcium channels in transmitter release from vasoconstrictor and vasodilator neurons

1 The effects of calcium channel blockers on co-transmission from different populations of autonomic vasomotor neurons were studied on isolated segments of uterine artery and vena cava from guinea-pigs. 2 Sympathetic, noradrenergic contractions of the uterine artery (produced by 200 pulses at 1 or 10 Hz; 600 pulses at 20 Hz) were abolished by the N-type calcium channel blocker omega-conotoxin (CTX) GVIA at 1-10 nM. 3 Biphasic sympathetic contractions of the vena cava (600 pulses at 20 Hz) mediated by noradrenaline and neuropeptide Y were abolished by 10 nM CTX GVIA. 4 Neurogenic relaxations of the uterine artery (200 pulses at 10 Hz) mediated by neuronal nitric oxide and neuropeptides were reduced < 50% by CTX GVIA 10-100 nM. 5 Capsaicin (3 muM) did not affect the CTX GVIA-sensitive or CTX GVIA-resistant neurogenic relaxations of the uterine artery. 6 The novel N-type blocker CTX CVID (100-300 nM), P/Q-type blockers agatoxin IVA (10-100 nM) or CTX CVIB (100 nM), the L-type blocker nifedipine (10 muM) or the 'R-type' blocker SNX-482 (100 nM), all failed to reduce CTX GVIA-resistant relaxations. The T-type channel blocker NiCl2 (100-300 muM) reduced but did not abolish the remaining neurogenic dilations. 7 Release of different neurotransmitters from the same autonomic vasomotor axon depends on similar subtypes of calcium channels. N-type channels are responsible for transmitter release from vasoconstrictor neurons innervating a muscular artery and capacitance vein, but only partly mediate release of nitric oxide and neuropeptides from pelvic vasodilator neurons.

Correlation of non-uniform protein expression with variation in transmitter release probability

The strength of synaptic transmission is highly variable between different synapses. The present study examined some factors that may contribute to this variation in the strength of neurotransmission in sympathetic varicosities of the mouse vas deferens. Transmitter release was measured using a focal macropatch electrode placed over pairs of visualised varicosities. By regulating the calcium concentration of the solutions inside the recording electrode and in the bath independently of each other, transmitter release was restricted to one or two surface varicosities at each recording site. Using this technique, transmitter release probability was shown to be highly variable, even between adjacent varicosities on single axon branches. Very little variation was observed in the calcium influx following single impulse nerve stimulation between adjacent Oregon Green BAPTA-1 loaded varicosities. However, the staining intensities of three vesicular proteins, SV2, synaptophysin, and synaptotagmin 1, showed considerable variation between adjacent varicosities on single axon branches. This variation in staining intensity may be partly explained by variation in the density of synaptic vesicles. However, double staining experiments using two vesicular antigens showed some varicosities staining for one vesicular antigen, but not for the second, suggesting that the expression of these release machinery proteins is regulated locally within the varicosities. The results of the present study strengthen suggestions that synaptic strength is at least in part, regulated by variation in the expression of vesicular proteins. (C) 2004 Wiley-Liss, Inc.